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Dissipation in quantum fields and semiclassical gravity

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  • Hu, B.L.

Abstract

We discuss the theoretical and physical meaning of dissipation of background fields due to particle creation and statistical effects in interacting quantum field theories and in semiclassical gravitational theories. We indicate the possible existence of a fluctuation-dissipation relation for non-equilibrium quantum fields as occuring in cosmological particle creation and backreaction processes. We also conjecture that all effective theories, including quantum gravity, could manifest dissipative behavior.

Suggested Citation

  • Hu, B.L., 1989. "Dissipation in quantum fields and semiclassical gravity," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 158(1), pages 399-424.
    • Handle: RePEc:eee:phsmap:v:158:y:1989:i:1:p:399-424
    DOI: 10.1016/0378-4371(89)90539-6
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