Radiation Entropy Bound from the Second Law of Thermodynamics

Entropy

关键词: entropy;    Second Law of Thermodynamics;    CPT;   

DOI  :  10.3390/e14040736

来源: mdpi

【 摘 要 】

It has been suggested heuristically by Unruh and Wald, and independently by Page, that at given energy and volume, thermal radiation has the largest entropy. The suggestion leads to the corresponding universal bound on entropy of physical systems. Using a gedanken experiment we show that the bound follows from the Second Law of Thermodynamics if the CPT symmetry is assumed and a general condition on matter holds. The experiment suggests that a wide class of Lorentz invariant local quantum field theories obeys a bound on the density of states.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.