Thoughts on entropic gravity in the Parikh–Wilczek tunneling model of Hawking radiation
Department of Physics and Center for High Energy Physics, Chung Yuan Christian University, Chung Li, Taiwan
2 Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 106, Taiwan
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Accepted: 17 May 2014
Published online: 4 June 2014
In this letter, we use the Parikh–Wilczek tunneling model of Hawking radiation to illustrate that a reformulation of Verlinde’s entropic gravity is needed to derive Newton’s law for a temperature-varying screen, required by the conservation of energy. Furthermore, the entropy stored in the holographic screen is shown to be additive and its temperature dependence can be obtained.
© SIF and Springer-Verlag Berlin Heidelberg, 2014