Nonequilibrium action principles for quasi-field

Quasiparticle descriptions of nonequilibrium physics hold the promise of tracking the relevant degrees of freedom in calculations of statistical systems, as well as providing an important formal perspective on quantum field theories away from equilibrium. A formulation of nonequilibrium, quasiparti...

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Збережено в:
Бібліографічні деталі
Дата:2000
Автор: Burgess, M.
Формат: Стаття
Мова:English
Опубліковано: Інститут фізики конденсованих систем НАН України 2000
Назва видання:Condensed Matter Physics
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/121040
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Nonequilibrium action principles for quasi-field / M. Burgess // Condensed Matter Physics. — 2000. — Т. 3, № 1(21). — С. 35-50. — Бібліогр.: 23 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
Опис
Резюме:Quasiparticle descriptions of nonequilibrium physics hold the promise of tracking the relevant degrees of freedom in calculations of statistical systems, as well as providing an important formal perspective on quantum field theories away from equilibrium. A formulation of nonequilibrium, quasiparticle field theory is presented here. The Schwinger closed time path generating functional and generalized sources are used to develop schematic field theories which can be adapted to real problems. The importance of the source method for effective nonequilibrium theories is argued and the physical interpretation of the formalism is discussed, including its possible applicability to biological dynamics.