Title




Relativistic statistical thermodynamics of dense photon gas


Author






Abstract




We discuss some aspects of interactions of highfrequency electromagnetic waves with plasmas, assuming that the intensity of radiation is sufficiently large, so that the photonphoton interaction is more likely than the photonplasma particle interaction. In the stationary limit, solving the kinetic equation of the photon gas, we derive a distribution function. With this distribution function at hand, we investigate the adiabatic photon selfcapture and obtain the number density of the trapped photons. We employ the distribution function to calculate the thermodynamic quantities for the photon gas. Having expressions of the entropy and the pressure of the photon gas, we define the heat capacities and exhibit the existence of the ratio of the specific heats Gamma, which equals 7/6 for nonrelativistic temperatures. In addition, we disclose the magnitude of the mean square fluctuation of the number of photons. Finally, we discuss the uniform expansion of the photon gas. 


Language




English


Source (journal)




Physical review : E : statistical, nonlinear, and soft matter physics / American Physical Society.  Melville, N.Y., 2001  2015


Publication




Melville, N.Y.
:
American Physical Society
,
2007


ISSN




15393755
[print]
15502376
[online]


DOI




10.1103/PHYSREVE.76.016406


Volume/pages




76
:1 Part 2
(2007)
, p. 17


Article Reference




016406


ISI




000248552600057


Medium




Eonly publicatie


Full text (Publisher's DOI)






Full text (open access)





