# Must time machines be unstable against vacuum fluctuations

@article{Li1996MustTM, title={Must time machines be unstable against vacuum fluctuations}, author={Li-xin Li}, journal={Classical and Quantum Gravity}, year={1996}, volume={13}, pages={2563-2568} }

In the appearance of an absorption material, the quantum vacuum fluctuations of all kinds of fields may be smoothed out and the spacetime with time machines may be stable against vacuum fluctuations. The chronology protection conjecture may break down and the anti-chronology protection conjecture may hold: there is no law of physics preventing the appearance of closed timelike curves.

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