Reference health
Making the universe safe for historians: Time travel and the laws of physics
45/45 checkable references clean · checked 2026-09-03
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
33 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 45 checked references that resolve
resolves10.1103/PhysRev.120.313
Gravitational-Electromagnetic Coupling and the Classical Self-Energy Problem
resolves10.1007/978-94-011-3570-2_9
Non-Linear Gauge Invariant Field Theories of the Electron and Other Elementary Particles
resolves10.1103/PhysRevLett.66.1126
Closed timelike curves produced by pairs of moving cosmic strings: Exact solutions
resolves10.1103/PhysRevLett.70.2201
Consistent interpretation of quantum mechanics using quantum trajectories
resolves10.1103/PhysRevD.43.3929
Do vacuum fluctuations prevent the creation of closed timelike curves?
resolves10.1103/PhysRevD.49.4041
Vacuum polarization at the chronology horizon of the Roman spacetime
resolves10.1119/1.15620
Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity
resolves10.1098/rspa.1993.0159
On the structure of conformal singularities in classical general relativity. II Evolution equations and a conjecture of K. P. Tod
resolves10.1103/PhysRevLett.71.2517
Must time-machine construction violate the weak energy condition?
resolves10.1103/PhysRevD.49.5240
Chronology protection and quantized fields: Nonconformal and massive scalar fields in Misner space
resolves10.1016/0550-3213(94)90560-6
Hawking's chronology protection conjecture: singularity structure of the quantum stress-energy tensor
resolves10.1007/BF00242090
Constants and cosmology: The nature and origin of fundamental constants in astrophysics and particle physics
resolves10.1007/BF00690424
A stationary apparent weight shift from a transient Machian mass fluctuation
resolves10.1088/0143-0807/15/1/001
Newton's absolute space, Mach's principle and the possible reality of fictitious forces
The 33 references without a DOI — listed, not checked
no DOI — not checkedBarbour, J.B. (1990), in Bertotti, B., et al., eds.,Modern Cosmology in Retrospect (Cambridge University Press, Cambridge), pp. 47–66; (1994), in Halliwell, et al., eds.,Physical Origins of Time Asymmetry (Cambridge University Press, Cambridge), pp. 405–414.
no DOI — not checkedBarrow, J.D. (1981),Quart. J. Roy. Astr. Soc. 22, 388–420; (1990), in Bertotti, B., et al., eds.,Modern Cosmology in Retrospect (Cambridge University Press, Cambridge), pp. 67–93.
no DOI — not checkedBell, J.S. (1988),Speakable and Unspeakable in Quantum Mechanics (Cambridge University Press, Cambridge).
no DOI — not checkedCosta de Beauregard, O. (1953),C. R. Acad. Sc. (Paris) 236, 1632–1634; (1971), in Yourgrau, W., and van der Merwe, A., eds.,Perspectives in Quantum Theory (MIT Press, Cambridge), pp. 140–152; (1983), in A. van der Merwe, ed.,Old and New Questions in Physics, Cosmology, Philosophy and Theoretical Biology (Plenum Press, New York), pp. 87–107; (1992),Found. Phys. Lett. 5, 489–491.
no DOI — not checkedDavies, P.C.W. (1974),The Physics of Time Asymmetry (University of California Press, Berkeley).
no DOI — not checkedDeWitt, B. (1994), in Halliwell et al., eds.,Physical Origins of Time Asymmetry (Cambridge University Press, Cambridge), pp. 221–233.
no DOI — not checkedDicke, R.H. (1964),The Theoretical Significance of Experimental Relativity (Gordon & Breach, New York).
no DOI — not checkedEinstein, A. (1919), inThe Principle of Relativity (Dover, New York, 1952), pp. 189–198.
no DOI — not checkedFiorentini, G., Gasperini, M., and Scarpetta, G. (1992),Mod. Phys. Lett. A6, 2033–2037.
no DOI — not checkedForward, R.L. (1989a),J. Brit. Interplanetary Soc. 42, 533–542; (1989b),J. Propulsion 6, 28–37.
no DOI — not checkedGold, T., ed. (1967),The Nature of Time (Cornell University Press, Ithaca).
no DOI — not checkedGribbin, J. (1992),Unveiling the Edge of Time (Random House, New York); (1994),New Scientist 141 (3/19), 16.
no DOI — not checkedHalliwell, J.J., Perez-Mercader, J., and Zurek, W.H. (1994) eds.,Physical Origins of Time Asymmetry (Cambridge University Press, Cambridge).
no DOI — not checkedHartle, J.B. (1993), in Gleiser, R.J., Kozameh, C.N. and Moreschi, O.M., eds.,General Relativity and Gravitation 1992 (IOP Publishing Bristol), pp. 81–100.
no DOI — not checkedHoffmann, B. (1972),Albert Einstein Creator and Rebel (New American Library, New York).
no DOI — not checkedHogarth, J.E. (1962),Proc. Roy. Soc. A 267, 365–383.
no DOI — not checkedHoyle, F. and Narlikar, J.V. (1974),Action at a Distance in Physics and Cosmology (Freeman, San Francisco).
no DOI — not checkedJammer, M. (1961),Concepts of Mass (Harper & Row, New York).
no DOI — not checkedNahin, P.J. (1993),Time Machines: Time Travel in Physics, Metaphysics, and Science Fiction (American Institute of Physics, New York).
no DOI — not checkedPage, D.N. (1994), in Halliwellet al., eds.,Physical Origins of Time Asymmetry (Cambridge University Press, Cambridge), pp. 287–298.
no DOI — not checkedPais, A. (1982),Subtle is the Lord (Oxford University Press, Oxford).
no DOI — not checkedPenrose, R. (1987), in Hawking, S. and Israel, W., eds.,Three Hundred Years of Gravitation (Cambridge University Press, Cambridge), pp. 17–49; (1989a),The Emperor's New Mind (Oxford University Press, Oxford); (1989b),Ann. N.Y. Acad. Sci. 571. 249–264; (1993), in Gleiser, R.J., Kozameh, C.N. and Moreschi O.M., eds.,General Relativity and Gravitation 1992 (IOP Publishing Bristol), pp. 179–189.
no DOI — not checkedRaine, D.J. (1981a),The Isotropic Universe (Adam Higler, Bristol)
no DOI — not checkedRaine, D.J., and Heller, M. (1981),The Science of Space-Time (Pach Publishing House, Tucson).
no DOI — not checkedRindler, W. (1982),Introduction to Special Relativity (Oxford Un versity Press, Oxford).
no DOI — not checkedRobertson, H.P., and Noonan, T.W. (1968),Relativity and Cosmology (Saunders, Philadelphia).
no DOI — not checkedSachs, M. (1992),Ann. Fond. Louis de Broglie 17, 163–173.
no DOI — not checkedSchimming, R., and Schmidt, H.-J. (1990),NTM-Schriftenr. Gesc Naturw., Techn., Med. Leipzig 27, 41–48.
no DOI — not checkedThorne, K.S. (1993), in Gleiser, R.J., Kozameh, C.N. and Moreschi, O.M., eds.,General Relativity and Gravitation 1992 (IOP Publishing, Bristol), pp. 295–315; (1994),Black Holes and Time Warps: Einstein's Outrageous Legacy (Norton, New York).
no DOI — not checkedTumulty, K. (1995),Time 145 no. 2.
no DOI — not checkedWeyl, H. (1949),Philosophy of Mathematics and Natural Science (Princeton University Press, Princeton).
no DOI — not checkedWheeler, J.A. (1964), in deWitt, C., and deWitt, B., eds.Relativity, Groups and Topology (Gordon & Breach, New York); (1994), in Halliwell, et al., eds.,Physical Origins of Time Asymmetry (Cambridge University Press, Cambridge), pp. 1–29.
no DOI — not checkedWhitrow, G.J. (1980),The Natural Philosophy of Time, 2nd edn. (Oxford University Press, Oxford).
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