Nonequilibrium thermodynamics and Fisher information: Sound wave propagation in a dilute gas

被引：32

作者：

Flego, SP

Frieden, BR

Plastino, A

Plastino, AR

Soffer, BH

机构：

[1] Natl Univ La Plata, RA-1900 La Plata, Argentina

[2] Univ Arizona, Ctr Opt Sci, Tucson, AZ 85721 USA

[3] Consejo Nacl Invest Cient & Tecn, RA-1900 La Plata, Argentina

[4] Univ Pretoria, Dept Phys, ZA-0002 Pretoria, South Africa

[5] Univ Calif Los Angeles, Pacific Palisades, CA 90272 USA

来源：

PHYSICAL REVIEW E | 2003年 / 68卷 / 01期

关键词：

D O I：

10.1103/PhysRevE.68.016105

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

As recently shown, a constrained Fisher-information extremizing (CFIE) process is able to deal with both equilibrium and nonequilibrium thermodynamic processes, thus being able to reproduce results deduced by a recourse to Boltzmann's transport equation (BTE). Here, we discuss the propagation of sound waves in a dilute gas and compare the ensuing CFIE solutions with those obtained by a recourse to Grad's approach to the BTE. The final molecular distribution function arrived at is the same following two alternative routes, either (i) the BTE via the Grad approach or (ii) the constrained Fisher treatment that does not require the use of the BTE. The way the necessary a priori information is used in these two instances, is however, quite different.

引用

页数：11