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(1995) Reflections on spacetime, Dordrecht, Springer.

Outlawing time machines

chronology protection theorems

John Earman

pp. 5-19

At the outset I want to distinguish between two questions which are often run together: (1) Is time travel possible? and (2) Is it possible to operate a time machine? Each question can be treated in various contexts. The context I will explore here is provided by the classical form of the general theory of relativity (GTR), although towards the end I will make some remarks about the implications of quantum theory and quantum gravity.

Publication details

DOI: 10.1007/978-94-017-2872-0_1

Full citation:

Earman, J. (1995)., Outlawing time machines: chronology protection theorems, in U. Majer & H. Schmidt (eds.), Reflections on spacetime, Dordrecht, Springer, pp. 5-19.

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