Hawking radiation and near horizon universality of chiral Virasoro algebra

Details Hawking radiation and near horizon universality of chiral Virasoro algebra Hawking radiation and near horizon universality of chiral Virasoro algebra

2008-04-22

arxiv.org/abs/0804.3492v2

Physics

High Energy Physics

High Energy Physics - Theory

Title and abstract modified and accordingly the text has also been modified

Scientific paper

We show that the diffeomorphism anomaly together with the trace anomaly reveal a chiral Virasoro algebra near the event horizon of a black hole. This algebra is the same irrespective of whether the anomaly is covariant or consistent, thereby manifesting its universal character and the fact that only the outgoing modes are relevant near the horizon. Our analysis therefore clarifies the role of the trace anomaly in the diffeomorphism anomaly approach \cite{wilczek, isowilczek, shailesh, shailesh2, sunandan, sunandan10, rabin10} to the Hawking radiation.

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