Comment on Hawking radiation and trapping horizons

Baier R, Stricker S (2015)
arXiv:1511.07129.

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We consider dynamical black hole formation from a collapsing fluid described by a symmetric and flat FRW metric. Using the Hamilton-Jacobi method the local Hawking temperature for the formed trapping/apparent horizon is calculated. The local Hawking temperature depends on the tunneling path, which we take to be along a null direction $(\Delta s=0)$. We find that the local Hawking temperature depends directly on the equation of state of the collapsing fluid. We argue that Hawking radiation by quantum tunnelling from future inner and future outer trapping horizons is possible. However, only radiation from a space-like dynamical horizon has a chance to be observed by an external observer. Some comparison to existing literature is made.
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Baier R, Stricker S. Comment on Hawking radiation and trapping horizons. arXiv:1511.07129. 2015.
Baier, R., & Stricker, S. (2015). Comment on Hawking radiation and trapping horizons. arXiv:1511.07129
Baier, R., and Stricker, S. (2015). Comment on Hawking radiation and trapping horizons. arXiv:1511.07129.
Baier, R., & Stricker, S., 2015. Comment on Hawking radiation and trapping horizons. arXiv:1511.07129.
R. Baier and S. Stricker, “Comment on Hawking radiation and trapping horizons”, arXiv:1511.07129, 2015.
Baier, R., Stricker, S.: Comment on Hawking radiation and trapping horizons. arXiv:1511.07129. (2015).
Baier, Rudolf, and Stricker, Stefan. “Comment on Hawking radiation and trapping horizons”. arXiv:1511.07129 (2015).
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