paper

Rotating quantum states

arXiv:1401.6388 · doi:10.1016/j.physletb.2014.05.031

Abstract

We revisit the definition of rotating thermal states for scalar and fermion fields in unbounded Minkowski space-time. For scalar fields such states are ill-defined everywhere, but for fermion fields an appropriate definition of the vacuum gives thermal states regular inside the speed-of-light surface. For a massless fermion field, we derive analytic expressions for the thermal expectation values of the fermion current and stress-energy tensor. These expressions may provide qualitative insights into the behaviour of thermal rotating states on more complex space-time geometries.

6 pages, 1 figure, expanded discussion and more plots included, version accepted for publication in Physics Letters B

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