All articles and books

The entries are ordered chronologically by year (starting from the newest), and then alphabetically within each year.

2001 ========================================

[book]
Bengtsson I and Brannlund J
2+1 gravity, chaos and time machines
J. Math. Phys. 42 (2001) 3565

[book]
Gott JR
Time Travel in Einstein's Universe: the Physical Possibilities of Travel through Time
Houghton Mifflin Company, Boston, 2001
[an excelent book by one of the TM engineers]

2000 ========================================

[wh]
Anchordoqui LA Trobo ML Vucetich H Zyserman F
Gravitational memory of natural wormholes
Mod Phys Lett A 15(6): 429-438, 2000
[A traversable singularity-free wormhole. The gravitational memory phenomenon]

[TM-gt]
Birmingham D, Sen S
Gott time machines, BTZ black hole formation, and Choptuik scaling
Phys Rev Lett 84 (2000) 1074-1077
[It is shown that the Gott time machine provides a mechanism for black hole formation]

[pop: TM-wh, TM-wd]
Ford LH, Roman, TA
Negative energy, wormholes and warp drive
Sci Am: 46-53, 2000 Jan (reply: 2000 May p.12)

[TM-wd]
Gonzalez-Diaz PF
Warp drive space-time
Phys Rev D62: 044005 (2000)

[TM]
Gonzalez-Diaz PF
Misner-brane cosmology
Phys Lett B486: 158-164 (2000)

[TM->QM]
Gonzalez-Diaz PF
Kinks, energy conditions and closed timelike curves
Int J Mod Phys D 9(5): 531-541, 2000. (gr-qc/0007065)

[pop]
Gott JR
Will we travel back (or forward) in time?
Time, April 10, 2000 pp 68-70
[popular discussion on physics and time travel]

[TM-gt]
Klepac P and Horsky J
Charged universes of the Godel type with closed timelike curves
Class Quant Grav 17(13): 2547-2555, 2000

[TM-os]
Olum KD
The Ori-Soen time machine
Phys Rev D61 (2000) 124022
[problems with attempt to build Ori-sen time machine with normal matter]

[TM]
Tiglio MH
How much energy do closed timelike curves in 2+1 spacetimes need?
Phys Rev D61 (2000) 08 1503
[Energy assumes negative values]

[TM-ec]
Visser M and Barcelo C
Energy conditions and their cosmological consequences
gr-qc/0001099
[various energy conditions discussed]

1999 ========================================

[TM-st]
Anchordoqui LA, Perez Bergliaffa SE, Trobo ML, Birman GS
Cylindrically symmetric spinning Brans-Dicke spacetimes with closed timelike curves
Mod Phys Lett A14 (1999): 1105-1112

[Phil]
Chambers T
Discussion - Time travel: How not to defuse the principal paradox
Ratio-New Series. 12(3): 296-301, 1999

[TM-st]
De Lorenci VA De Paola RDM Svaiter NF
From spinning to non-spinning cosmic string spacetime
Class Quant Grav 16(10): 3047-3055, 1999

[nec]
Fewster CJ, Teo E
Bounds on negative energy densities in static space-times
Phys Rev D 5910(10): 4016, 1999

[TM->QM; TM-wh]
Flagga MSN.
Decohering a charged scalar field in a time-machine wormhole background
Int J Theor Phys 38(8): 2121-2161, 1999
[The decoherent-histories approach to quantum mechanics is used for a wormhole time machine]

[TM-bh]
Gibbons GW.
Rotating black holes in unified theories
Progress of Theoretical Physics Supplement. (136):18-28, 1999
[Supersymmetric five-dimensional rotating solutions of Beckenridge at al. When under-rotating --- they are extreme black holes; when over-rotating --- they are naked time machines. Possibility of time travel by freely falling observers]

[TM-bh]
Gibbons GW and Herdeiro CAR
Supersymmetric rotating black holes and causality violation
Class Quant Grav 16 (11) 3619-3652, 1999

[Phil]
Grey W
Troubles with time travel
Philosophy 74(287): 55-70, 1999

[TM-st]
Gonzalez-Diaz PF
Perdurance of multiply connected de Sitter space
Phys Rev D 59, 1999, 123513
[multiple-connected de Sitter ST of Gott and Li is stable; in support of stability of self-creating universes]

[TM-top]
Gonzalez-Diaz PF, Garay LJ
Nonorientable spacetime tunneling
Phys Rev D 59 (1999) 064026

[TM-st]
Gott JR, and Li XL
Can the universe create itself?
Phys Rev D 58, 1998, 023501 . Also: astro-ph/9712344
[primordial CTC, time loop allowing the universe to create itself]

[TM-gt]
Holst S, Matschull H-J
Supersymmetric rotating black holes and causality violation
Class Quant Grav 16, 1999, 3095
[2D theory with a negative energy vacuum state throughout space; TM = cosmic string inside a black hole]

[TM-gd]
Kanti P, Vayonakis CE
Godel-type universes in string-inspired charged gravity
Phys Rev D 60, 1999, 103519
[Godel-type universes with electro-magnetic fields and charges]

[Phil]
King D
Time travel and self-consistency: Implications for determinism and the human condition
Ratio-New Series 12(3): 271-278, 1999

[TM->QM]
Krasnikov S.
Quantum field theory and time machines
Phys Rev D 59 : 4010, 1999 Jan 15???????14 December 1998
[various locality condition considered and proposed. MF-locality condition permits time machines]

[TM-st]
Li LX
Time machines constructed from anti-de Sitter space
Phys Rev D 59 (1999) 084016

[wh wec]
Vollick DN.
Wormholes in string theory
Class Quant Grav 16(5):1599-1604, 1999
[A wormhole joining two spacetimes described by the 'string metric.' Wormholes can be constructed without violation the weak and dominant energy conditions]

1998 ===============================================

[TM->QM]
Antonsen F and Bormann K
Time machines and the breakdown of unitarity
Int J Theor Phys 37(9): 2383-2393, 1998

[TM-gd]
Bonnor WB, Santos NO, MacCallum MAH
An exterior for the Godel spacetime
Class. Quant. Grav. 15 (1998) 357-366

[TM-pdx]
Cassidy MJ and Hawking SW
Models for chronology selection
Phys Rev D 57, 1998, 41998
[a specific model of st where QM seems to enforce causality protection]

[Pop]
Chown M
All the worlds a time machine
New Scientist 157(2124): 38-41, 1998 Mar 7.
[short exposition of M. Hadleys idea that an elementary particle is a local ST warp that it permits closed timelike curves. Hence general relativity could reproduce (explain) the effects of QM]

[Pop]
Cole GHA and Dunningdavies J
The prospects for time travel - comments
Observatory 118(1144): 165-166, 1998 Jun.

[TM-gz, TM->QM]
Gonzalez-Diaz PF
Quantum time machine
Phys Rev D 58 (12): 4011, 1998

[QTM]
Gray A
A design for a quantum time machine
quant-ph/9804008
[misleading title. On QM measurement problem; quantum "seeing into future."]

[TM; new]
Krasnikov SV
Time machines with non-compactly generated cauchy horizons and ``handy singularities"
gr-qc/9711040 (To appear in the proceedings of the 8th Marcel Grossman Conference)

[TM-new]
Krasnikov SV
A singularity-free WEC-respecting time machine
Class Quant Grav 15 (1998) 997-1003

[TM<-QM]
Li LX and Gott JR
Self-consistent vacuum for Misner space and the chronology protection conjecture
Phys Rev Lett 80, 2980, 1998
[Misner space stable to quantum flutuations; against CPC]

[TM->QM]
Mensky MB and Novikov ID
Decoherence caused by topology in a time-machine spacetime
Int.J.Mod.Phys. D5 (1996) 1-27

[book]
Novikov ID
The River of Time
Cambridge, England, Cambridge University Press, 1998
[principle of self-consistency, faith in time-travels]

[TM-gd]
Rooman M, Spindel Ph
Godel metric as a squashed anti-de Sitter geometry
Class Quant Grav 15 (1998) 3241-3249

[TM->QM, TM-pl]
Rosenberg S
Testing causality violation on spacetimes with closed timelike curves
Phys Rev D 57(6):3365-3377, 1998
[politzer TM used to investigate the scattering experiment; interesting results on agreement with the no CTC case if there is enough TM's]

[TM-pdx]
Sharlow MF
A new non-Hausdorff spacetime model for resolution of the time travel paradoxes
Annals of Physics 263(2): 179-197, 1998

[Phil]
Smith NJJ
The problems of backward time travel
Endeavour 22(4):156-158, 1998.
[a philosopher's account]

[TM->QM]
Sushkov SV
Particle creation near the chronology horizon
Phys Rev D 58, 1998, 044006
[a 2D ST, in which the number of particles created at the Cauchy horizon is finite]

[TM-]
Tiglio MH
No time machine construction in open 2+1 gravity with timelike total energy-momentum
Phys Rev D 58 (6): 4018, 1998

[Hist]
Yourgrau P
Comments on "Did Godel surprise Einstein with a rotating universe and time travel?" by Giora Hon
Found Phys 28(11): 1719-1727, 1998
[on Giora's 1996 paper]

1997 ====================================================

[Phil]
Adams RM
Thisness and time travel
Philosophia. 25(1-4): 407-415, 1997 Apr.

[Pop]
Bonham E
Time travel
New Scientist. 154(2088): 51, 1997 Jun 28.

[TM<-QM]
Cassidy MJ
Divergences in the effective action of acausal spacetimes
Class Quant Grav 14 p 523, 1997
[shows that a self-consistent quantum vacuum for Misner space exist, allowing time travel]

[TM<-QM]
Cassidy MJ
The 1-loop instability of Misner space
Class Quant Grav 15 (8), 1998

[Pop]
Cole GHA and Dunningdavies J
The prospects for time travel
Observatory. 117(1138): 150-151, 1997 Jun.

[TM]
Everett AE and Roman TA
Superluminal subway - the Krasnikov tube
Phys Rev D 56 (4): 2100-2108, 1997

[pop]
Gribbin J
To the editors of the observatory - prospects for time travel
Observatory. 117(1141): 368, 1997 Dec.

[Lit]
Hamburger S
Time machines - the best time travel stories ever written - Adler,b
Library Journal. 122(19): 79, 1997 Nov 15.

[TM->QM]
Kay BS. Radzikowski MJ. Wald RM.
Quantum field theory on spacetimes with a compactly generated Cauchy horizon
Comm Math Phys 183(3): 533-556, 1997

[TM->CM]
Krasnikov SV
Causality violation and paradoxes
Phys Rev D 55(6): 3427-3430, 1997

[Phil]
Riggs PJ
The principal paradox of time travel
Ratio-New Series. 10(1): 48-64, 1997 Apr.

[phil]
Smith NJJ
Bananas enough for time travel
British Journal for the Philosophy of Science. 48(3): 363-389, 1997 Sep.

1996 =============================================

[TM->CM, billiard]
Antonsen F and Bormann K
Self-consistency of the quantum billiard problem in wormhole spacetimes
Int J Theor Phys 35(6): 1223-1244, 1996
[problems with energy conservation]

[TM-wh]
Antonsen F and Bormann K
Wormholes and time-machines
in: Proceedings Third International A. Friedmann Seminar, St. Petersburg 1995, Friedmann Laboratory Publishers 1996

[pop]
Bagnol Ph
Where have all the time travellers gone?
New Scientist. 6 July 1996 p. 45-45

[TM->CM]
Carlini A and Novikov ID
Time machines and the principle of self-consistency as a consequence of the principle of stationary action (ii) - the Cauchy problem for a self-interacting relativistic particle
Int J Mod Phys D 5(5): 445-479, 1996 Oct.

[TM-wd]
Everett AE
Warp drive and causality
Phys Rev D 53 (12) pp 7365-7368, 1996
[warp-drive TM proposed]

[TM-rh]
Gonzalez-Diaz PF
Ringholes and closed timelike curves
Phys Rev D 54(10): 6122-6131, 1996
[ringhole time machine introduced]

[TM-wh]
Guts AK
Time machine as four-dimensional wormhole
gr-qc/9612064

[TM-gt]
Holst S
Gott time machines in the Anti-de Sitter space
Gen Rel Grav 28 (1996) 387-403

[hist]
Hon G.
Disturbing, but not surprising - did Godel surprise Einstein with a rotating universe and time travel
Found Phys 26(4): 501-521, 1996 Apr.

[QM->TM]
Krasnikov SV
The quantum stability of the time machine
Phys Rev D54 (1996) 7322-7327

[QM->TM]
Li LX
Must time machine be unstable against vacuum fluctuations?
Class Quant Grav 13 (1996) 2563-2568

[TM->CM, billiard]
Mensky MB and Novikov ID
Three-dimensional billiards with time machine
Int J Mod Phys D 5(2): 179-192, 1996

[TM->QM]
Mensky MB and Novikov ID
Decoherence caused by topology in a time-machine spacetime
Int J Mod Phys D 5(1): 1-27, 1996.

[Pop]
Parsons P
A warped view of time travel
Science. 274(5285): 202-203, 1996 Oct 11.

[TM-so]
Soen Y and Ori A
Improved time-machine model
Phys Rev D 54(8): 4858-4861, 1996

[phil]
Vihvelin K (Kadri)
What time travelers cannot do
Philosophical Studies 81(2/3): 315-330, March 1996

[book]
Visser M
Lorenztian Wormholes
AIP, Woodbury, 1996
[a book on TM's etc]

[pop]
Wheeler JC
Of wormholes, time machines, and paradoxes
Astronomer Feb 1996 p 52-57

1995 ===============================================

[TM->QM]
Anderson A
Unitarity restoration in the presence of closed timelike curves
Phys Rev D51 (1995) 5707-5715

[TM-wh]
Antonsen F and Bormann K
Problems in time-machine construction due to wormhole evolution
Int J Theor Phys 34 1995, p 2061
[problems with energy conservation]

[TM->CM]
Carlini A, Frolov VP, Mensky MB, Novikov ID, and Soleng HH
Time machines: the principle of self-consistency as a consequence of the principle of minimal action
Int J Mod Phys D4 (1995) 557-580; Erratum-ibid. D5 (1996) 99

[TM->QM]
Cassidy MJ
Nonlinearity in quantum theory and closed timelike curves
Phys Rev D52 (1995) 5676-5680
[problems with energy conservation]

[phil]
Earman J
Bangs, Crunches, Whimpers and Shrieks: Singularities and Acausalities in Relativistic Spacetimes.
New York: Oxford University Press. 1995

[phil]
Earman J
Outlawing Time Machines: Chronology Protection Theorems
Erkenntnis 42(2): 125-139, March 1995
[philosopher's account]

[TM->QM]
Fewster CJ, Wells CG
Unitarity of Quantum Theory and Closed Time-Like Curves
Phys Rev D52 (1995) 5773-5782
[alternative solution to the QM unitarity problem]

[TM-wh: pop]
Gribbin J
Time travel - its all done with smoke and mirrors
New Scientist 145(1963): 14, 1995 Feb 4.

[TM->QM]
Hawking SW
Quantum Coherence and Closed Timelike Curves
Phys Rev D52 (1995) 5681-5686
[Irretrivable loss of coherence within the traversable wormhole makes the travel dangerous for the traveler]

[TM: top]
Konstantinov MY
Causality properties of topologically nontrivial space-time models
Int J Mod Phys D 4(2): 247-257, 1995 Apr.

[TM: top]
Krasnikov SV
Topology change without any pathology
Gen Relativity and Gravitation 27 (5) p 529-536, 1995

[TM]
Maccone C

J Bret. Interplanetary Society
[recaaled that you can use magnetic fields to warp s-t instead od exotic matter, according to Levi-Civita]

[TM-wh]
Low RJ
Time machines without closed causal geodesics
Class Quant Grav 12(5): L 37-L 38, 1995 May.
[wormhole TM with rotated mouths; admits CTCs but no causal closed geodesic; against Hawking's chronology protection conjecture]

[Lit]
Slusser G and Chatelain D
Spacetime geometries, time travel and the modern geometrical narrative
Science-Fiction Studies. 22(Part 2): 161-186, 1995 Jul.

[TM->QM, TM-wh]
Sushkov SV
Vacuum polarization of a complex automorphic scalar field in two-dimensional spacetime with closed null geodesics and the time-machine problem
Theor Math Phys 102(1): 98-108, 1995 Jan.

[TM->QM]
Sushkov SV
Quantum complex scalar field in two-dimensional spacetime with closed timelike curves and a time-machine problem
Class Quant Grav 12(7): 1685-1697, 1995 Jul.

[TM-]
Suter D
``Weak measurements'' and the ``quantum time-translation machine'' in a classical system
Phys. Rev. A 51, 45-49 (1995)

[]
Vaidman L
There is no classical analog of a quantum time-translation machine
Phys. Rev. A 52, 4297-4298 (1995)

[TM-wh: wec]
Wang AZ and Letelier PS
Dynamical wormholes and energy conditions
Progress of Theoretical Physics 94(1): 137-142, 1995

[TM, review]
Woodward JF
Making the universe safe for historians - time travel and the laws of physics
Found Phys Lett 8(1): 1-39, 1995
[See also Found Phys Lett 8(3) p. 303 1995]

[TM: top]
Yurtsever U
A remark on kinks and time machines
Gen Rel Grav 27(6): 691-693, 1995
[on CGSJ 94]

1994 ======================================

[TM-wd]
Alcubierre M
The warp drive: hyper-fast travel within general relativity
Class Quantum Grav 11, L73 (1994)
[warp drive introduced. May serve as a TM, according to Everett]

[TM-gt]
Carroll SM, Farhi E, Guth AH and Olum KD
Energy-momentum restrictions on the creation of Gott time machines
Phys Rev D 50 pp 6190-6206, 1994
[how to create Gott's time machine: not enough energy]

[TM-top]
Chamblin A, Gibbons GW and Steif AR
Kinks and time machines
Phys Rev D 50(4) pp R2353-R2355, 1994

[Pop]
Deutsch D and Lockwood M
The quantum physics of time travel
Sci Am 270(3): 68-74, 1994 Mar.
[popular exosition of Deutsch's view on time travel and quantum physics. See also comments by Beeman RH, Peters AR, Hewett LD.a and a reply by Deutsh & Lockwood in Sci. Am. 271(3): 10, 1994 Sep.]

[TM->QM]
Goldwirth DS, Perry MJ and Piran T
The breakdown of quantum mechanics in the presence of time machine
Gen Rel Grav 25 pp 7-13 1994

[TM->QM]
Goldwirth DS, Perry MJ, Piran T and Thorne KS
Quantum propagator for a nonrelativistic particle in the vicinity of a time machine
Phys Rev D 49(8): 3951-3957, 1994

[TM->QM]
Gonella F
Time machine, self-consistency and the foundations of quantum mechanics
Found Phys Lett 7(2): 161-166, 1994

[TM-top]
Gonzalez-Diaz PF
Time walk through the quantum cosmic string
gr-qc/9412034

[TM->QM]
Hartle JB
Unitarity and causality in generalized quantum mechanics for nonchronal spacetimes
Phys Rev D 49 (12) pp 6543-6555, 1994
[QM on TM space-time must be nonunitary. Feynman's path integral QM is proposed]

[TM->QM]
Headrick MP, Gott JR
(2+1)-dimensional spacetimes containing closed timelike curves
Phys Rev D 50, 1994, 7244-7259
[includes comments on TM based on a cosmic string loop inside a black hole]

[TM]
Jackiw R.
Time travel [in Ukranian]
Ukrainskii Fizicheskii Zhurnal. 39(1): 6-14, 1994.

[CM->TM: stability]
Krasnikov SV
On the classical stability of a time machine
Class Quant Grav 11(11): 2755-2759, 1994 Nov.

[TM-wh]
Li LX
New light on time machine: against the chronology protection cojecture
Phys Rev D 50 R6037-40, 1994
[ST with CTCs and no closed null geodesics (wormhole tm with perfect mirror) that is to refute Hawking's argument on impossibility of time machines]

[TM-gt = TM-gr]
Laurence D
Isometries between Gott's two-string spacetime and Grant's generalization of Misner space
Phys Rev D 50 pp 4957-4965

[TM-CPC]
Mishima T, Nakamichi A
Chronology Protection in Two-Dimensional Dilaton Gravity
Phys Rev D49 (1994) 595-598

[Lit]
Morris R
The perils of time travel
Futurist. 28(5): 60, 1994 Sep-Oct.

[TM-os]
Ori A and Soen Y
Causality violation and the weak energy condition
Phys Rev D 49(8): 3990-3997, 1994. See Erratum: Phys Rev D 50, 7744 (1994)

[TM-pl]
Politzer HD
Path integrals, density matrices, and information flow with closed timelike curves
Phys Rev D 49 (8) pp. 3981-3989 1994
[Politzer time machine introduced]

[TM ->CM, biliard]
Rama SK, Sen S
Inconsistent physics in the presence of time machines
preprint MRI-PHY/14/94, TCD-7-94; 19 pages.

[TM-top]
Siino M
Compact three dimensional black hole: Topology change and closed timelike curve
Class Quant Grav 11 (1994) 1995-2006

[Pop]
Simon JZ
The physics of time travel
Physics World 7(12): 27-33, 1994
[popular account; time loops of 5x10^-44 are hard to rule out]

[TM]
Soleng HH
Negative Energy Densities in Extended Sources Generating Closed Timelike Curves in General Relativity with and without Torsion
Phys Rev D49 (1994) 1124-1125

[TM]
Steif AR
Multiparticle solutions in 2+1 gravity and time machines
Int J Mod Phys D 3(1): 277-280, 1994

[book]
Thorn KS
Black Holes and Time Warps
(Northon, New York, 1994)
[popular account; on time travel using wormholes]

[TM-wh]
Visser M
VanVleck determinants - traversable wormhole spacetimes
Phys Rev D 49(8): 3963-3980, 1994

[TM]
Visser M
Hawking's chronology conjecture: singularity structure of the quantum stress-energy tensor
Nucl Phys B 416: 895-906, 1994

[TM->QM]
Yurtsever U
Algebraic approach to quantum field theory on non-globally-hyperbolic spacetimes
Class Quant Grav 11 (1994) 999

1993 ============================================

[TM]
Deser S
Physical obstacles to time-travel
Clasd Quant Grav 10 Supplement (Dec 1993)

[TM-gr]
Grant JDE
Cosmic strings and chronology protection
Phys Rev D 47, 2388 (1993)
[Grant's extention of Misner's time machine introduced]

[TM-QM]
Li LX, Xu JM and Liu L
Complex geometry, quantum tunneling, and time machines
Phys Rev D 48(10): 4735-4737, 1993

[TM]
Mikheeva EV and Novikov ID
Inelastic billiard ball in a spacetime with a time machine
Phys. Rev. D 47, 1432-1436 (1993)

[book]
Nahin PJ
Time Machines
New York, American Institute of Physics (1993)
[on time travel in science and science fiction]

[TM-os]
Ori A
Must time-machine construction violate the weak energy condition?
Phys Rev Lett 71 (16): 2517 (1993)
[New, toroidal, TM proposed. No exotic matter required]

[TM-rm]
Roman TA
Inflating Lorentzian wormholes
Phys Rev D 47, 1370-1379 (1993)
[introduces Roman rings time machine]

[TM-wh: cpc]
Visser M
From wormhole to time machine: comments on Hawking's chronology protection conjecture
Phys Rev D47 (1993) 554-565
[in support of Hawking's CPC]

1992 ============================================

[pop]
Allen B and Simon JZ
Time travel on a string
Nature 359 18, 1992

[TM->QM]
Boulware DG
Quantum field theory in spaces with closed time-like curves
Phys Rev D46 (1992) 4421-4441
[on scalar field theory near Gott's TM]

[TM: problems]
Carroll SM, Farhi E and Guth AH
An obstacle to building a time machine
Phys Rev Lett 68 pp 263-266. Erratum - ibid. p 3368.

[pop]
Chown M
Time travel without paradoxes
New Scientist, p. 23-23, 28 March 1992

[TM-gt]
Cutler C
Global structure of Gott's two-string spacetime
Phys Rev D 45 p.487-494, 1992
[Cauchy horizons for Gott's machine (two-string space-time)]

[TM-gt]
Deser S, Jackiw R and t'Hooft G
Physical cosmic strings do not generate closed timelike curves
Phys Rev Lett 68 pp 267-269, 1992

[TM]
Deser S and Steif AR
No time machines from lightlike sources in 2+1 gravity
\emph{gc/9210012}, 1992

[TM-gt]
Ford LH and Roman TA
"Cosmic flashing" in four dimensions
Phys Rev D 46, 1328-1339 (1992)

[TM->QM]
Friedman JL Papastamatiou, and Simon JZ Unitarity of interacting fields in curved spacetime
Phys Rev D 46 4442, 1992
[Feynman's approach to QM saves it from possible inconsistencies (probabilities add up to 100 percent)]

[TM->QM]
Friedman JL Papastamatiou, and Simon JZ
Feilure of unitarity for interacting fields on spacetimes with closed timelike curves
Phys Rev D 46 4456-4469, 1992

[TM-top]
Gibbons GW and Hawking SW
Selection rules for topology change
Commun. Math. Phys. 148:345--352, 1992

[TM-top]
Gibbons GW and Hawking SW
Kinks and topology change
Phys Rev Lett 69(12) pp 719-21, 1992.

[TM->QM]
Goldwirth DS, Perry MJ, Piran T
The loss of unitarity in the vicinity of a time machine
gr-qc/9209005

[QM->TM: cpc]
Hawking SW
Chronology protection conjecture
Phys Rev D 46 (2) p. 603-611, July 1992
[CPC introduced. Gravitational TM impossible since they could lead to closed null geodesics that would --- via quantum effects arising from vacuum fluctuations --- amplify causing instability of TM]

[TM]
Jensen B
Notes on spinning strings
Classical and Quantum Gravity 9 No. 1 (January 1992)

[TM->QM]
Kim SW
Particle creation for time travel through a wormhole
Phys Rev D 46 2428-2434, 1992

[TM->CM]
Novikov ID
Time machine and self-consistent evolution in problems with self-interaction
Phys Rev D 45 p.1989, 1992

[TM-CM]
Lossev A and Novikov ID
The Jinn of the time machine: nontrivial self-consistent solutions
Class Quant Gravity 9 pp. 2309-2321, 1992

[TM]
Ori A
???
Rev Lett 68, 1922, 1992
[more on surviving TM]

[TM]
Ori A
Structure of the singularity inside a realistic rotating black hole
Phys Rev Lett} 68, 2117-2120 (1992)
[more on surviving TM]

[TM-pl]
Politzer HD
Simple quantum systems in spacetimes with closed timelike curves
Phys Rev D 46 4470-4476, 1992
[Politzer time machine introduced to study QM presence of TM]

1991 ============================================

[TM->QM]
Deutsch D
Quantum mechanics near closed timelike lines
Phys Rev D 44 (10) p 3197-3217 1991
[Everett's interpretation of QM can fix TM paradoxes]

[TM->CM]
Echeverria F, Klinkhammer G and Thorne KS
Billiard balls in wormhole spacetime with closed timelike curves: Classical theory
Phys Rev D 44 (4) p. 1077-1099, 1991
[Feynman quatization solves the problem of the biliard paradox]

[TM->QM]
Friedman J and Morris MS
The Cauchy problems for the scalar wave equation is well-defined in a class of spacetimes with closed time like curves
Phys Rev Lett, 66 pp 401-404, 1991

[TM->QM]
Frolov VP
Vacuum polarization in a locally static multiply connected spacetime and a time-machine problem
Phys. Rev. D 43, 3878-3894 (1991)

[TM-gt]
Gott JR
Closed timelike curves produced by pairs of moving cosmic strings: Exact solutions
Phys Rev Lett 66, 1126, (1991)
[two-string time machine introduced]

[QM->TM]
Kim SW and Thorn KS
Do quantum fluctuations prevent the creation of closed time like curves?
Phys Rev D 43 1991 p 3929
[expectation value of the energy-momentum tensor calculated to diverge]

[TM-gt]
Lemonick MD
??????
Time, May 13, 1991, p 74
[popular announcement of Gott's TM]

[TM-gt; cpc]
Ori A
Rapidly moving strings and chronology protection
Phys Rev D 44 :R2214-R2215, 1991

[TM]
Ori A
Inner structure of a charged black hole: An exact mass-inflation solution
Rev Lett 67: 789, 1991
[one can survive creating singularities while making TM]

[TM-wh]
Thorn KS
Do the laws of physics permit closed time-like curves?
Ann New York Ac Sci 631 p182, 1991

1990 ============================================

[QTM]
Aharonov Y, Anandan J, Popescu S, and Vaidman L
Superpositions of time evolutions of a quantum system and a quantum time-translation machine
Phys. Rev. Lett. 64, 2965-2968 (1990)

[TM]
Charlton N and Clarke CJS
On the outcome of Kerr-like collapse
Classical and Quantum Gravity 7 No. 5 (May 1990)

[TM-gt]
Ford LH and Roman TA
Moving mirrors, black holes, and cosmic censorship
Phys. Rev. D 41, 3662-3670 (1990)

[TM-wh; ctc]
Friedman J, Morris MS, Novikov ID, Echeverria F, Klinkhammer G, Thorne KS and Yurtsever U
Cauchy problem in spcetimes with closed timelike curves
Phys Rev D 42 (6) 1915-1930, 1990
[QM fixes the TM classical biliard paradox (Polchinski's prdx. "CTC's may be not as nasty as people have assumed". The principle of self-consistency in time travel reviewed.]

[TM->QM/CM]
Frolov VP and Novikov ID
Physical effects in wormholes and time machines
Phys Rev D 42 pp 1057-1065, 1990

[pop]
Redmount I
Wormholes, time travel and quantum gravity
New Scientist, p.57-61, 28 Apr 1990
[popular review]

[]
Yurtsever U
Test fields on compact space-times
J Math Phys 31, p. 3064--3078, 1990

1989 ============================================

[TM-pdx]
Novikov ID
???
Sov Phys JEPT 68, 1989
[principle of self-consistency in time-travels discussed]

[wh]
Visser M
Traversable wormholes from surgically modified Schwarzschild spacetimes
Nucl Phys B 328 pp 203-212

[wh]
Visser M
Traversable wormholes: some simple examples
Phys Rev D 39 : 3182-3184 1989
[wormholes without spherrical symmetry that are stable]

1988 ============================================

[pop]
Friedman JL
Back to the future
Nature 336 (24 Nov) p. 305-306
[turn a wormhole into a time machine by draging its one mouth with asteroid to induce time dilation: see T Roman 1986]

[TM-wh]
Morris MJ, Thorne KS and Yurtsever U
Wormholes, time machines, and the weak energy condition
Phys Rev Lett 61, 1446 (1988)
[wormhole as a time machine presented (idea of ??????), wormhole build with a use of Casimir effect. This article started the boom of TM papers]

[TM-wh; pop]
Morris MJ and Thorne KS,
Wormholes in spacetime and their use for interstellar travel
Am J Phys 56, 395 (1988)

1987 ============================================

[book]
Horwich P
Asymmetries in time
Cambridge: MIT Press, 1987
Contains chapter "Time Travel"

1986 ============================================

[phil TTpdx]
Dummet M
Causal loops
in: The NAture of Time, Raymond Flood and Michael Lockwood (eds.) Basil Blackwell, Oxford, 1986

[phil TTpdx]
Roamn TA
Quantum stress-energy tensors and the weak energy condition
Phys. Rev. D 33, 3526-3533 (1986)

[TM-wh]
Roman T
"Traversable wormholes can be turned into time machines"
Private communication to M. Morris. Dec 1986 Texas Symposium on Relativistic Astrophysics held in Chicago, IL
[turn a wormhole into a time machine by draging its one mouth with asteroid to induce time dilation. Idea first published by Morris at al. ]

1985 ============================================

[TM-gd]
Malament D
Minimal acceleration requirements for time travel in Gödel spacetime
Journal of Mathematical Physics 26, 1985, p 774--777

1981 ============================================

[TM]
de Felice F
Timelike nongeodesic trajectories wich violate causality: A rigorous derivation
Nuovo Cimento 65 B pp 224-232, 1981

1978 ============================================

[TM]
Calvani M, de Felice F, Muchotrzeb B, and Salmistraro F
Time machine and geodesic motion in Kerr metric
Gen Rel Grav 9 pp155-163, 1978
[perhaps the first time the term "time machine" enters titles of scientific papers]

[TM]
Charlton NJ
Some properties of time-machines
J Phys A: Math and Gen 11 No. 11 (1978)

[TM]
de Felice F
Timelike nongeodesic trajectories wich violate causality: A rigorous derivation
Nuovo Cimento 65 B pp 224-232, 1981

1977=============================================

[TM]
Tipler FJ
Singularities and causality violation
Ann Phys 108 p 1-36, 1977
[introducing the idea of constructing ST's to contain closed timelike curves (time machines)]

1976 ============================================

[Phil]
Lewis D
The paradoxes of time travel
Am Phil Quaterly 13 (2) 1976 Apr
[Grandfather paradox considered by a philosopher; often cited paper]

[TM]
Tipler FJ
Causality violation in asymptotically flat space-times
Phys Rev Lett 37, p 879-882 (1976)
[Making a TM in a finite region with positive mass only leads to singularities]

1974 ============================================

[TM-vs]
Tipler FJ
Rotating cylinders and the possibility of global causality violation
Phys Rev D 9 pp 2203-2206, 1974
[van Stockum's time machine explicated]

1974 ============================================

[]
Hawking SW and Ellis GFR
The large structure of space time
Cambridge Univ Press, Cambridge, 1974
[sec 6.4: ]

1960's ============================================

[TM]
Carter B
Global structure of the Kerr family of gravitational fields
Phys Rev 174, p 1559, 1968
[time travel region in rotating black hole]

[TM]
Carter B
Complete analytic extension of the symmetry axis of Kerr's solution of Einstein's equations
Phys Rev 141, p 1242, 1966
[time travel region in rotating black hole]

[Cosmic Strings]
Staruszkiewicz A
????
Acta Physica Polonica 24 1963, p 734
[point masses in 2D; precursor of cosmic string space-time]

1949 ============================================

[TM-gd]
Goedel K An example of a new type of cosmological solutions of Einstein's field equations of gravitation
Rev Mod Phys 21 p. 447, 1949
[a universe (solution to the Einsten's gravity eqns) acting as a TM]

1937 ============================================

[TM-vs]
Van Stockum WJ
Gravitational field of a distribution of particles rotating about an axis of symmetry
Proc R Soc Edin 57 pp 135-154, 1937
[rotating cylinder, the first time machine based on general relativity]

1800's ========================================

[TM-vs]
Wells HG
The Time Machine
Orig 1895, reprinted by Avanel Books, New York, 1979
[famous SciFi book, first on TM. The concept of space-time as a 4D continuum introduced more than a decade before Minkowski]