Radiation Entropy Bound from the Second Law of Thermodynamics
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 f...
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MDPI AG
2012-04-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/14/4/736/ |
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doaj-74323294f4084ad183f4ab52bde5a3552020-11-24T22:31:07ZengMDPI AGEntropy1099-43002012-04-0114473674110.3390/e14040736Radiation Entropy Bound from the Second Law of ThermodynamicsItzhak FouxonIt 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.http://www.mdpi.com/1099-4300/14/4/736/entropySecond Law of ThermodynamicsCPT |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Itzhak Fouxon |
| spellingShingle |
Itzhak Fouxon Radiation Entropy Bound from the Second Law of Thermodynamics Entropy entropy Second Law of Thermodynamics CPT |
| author_facet |
Itzhak Fouxon |
| author_sort |
Itzhak Fouxon |
| title |
Radiation Entropy Bound from the Second Law of Thermodynamics |
| title_short |
Radiation Entropy Bound from the Second Law of Thermodynamics |
| title_full |
Radiation Entropy Bound from the Second Law of Thermodynamics |
| title_fullStr |
Radiation Entropy Bound from the Second Law of Thermodynamics |
| title_full_unstemmed |
Radiation Entropy Bound from the Second Law of Thermodynamics |
| title_sort |
radiation entropy bound from the second law of thermodynamics |
| publisher |
MDPI AG |
| series |
Entropy |
| issn |
1099-4300 |
| publishDate |
2012-04-01 |
| description |
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. |
| topic |
entropy Second Law of Thermodynamics CPT |
| url |
http://www.mdpi.com/1099-4300/14/4/736/ |
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AT itzhakfouxon radiationentropyboundfromthesecondlawofthermodynamics |
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