thermal field theory

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thermal field theory

Quantum field theory at nonzero temperatures. Thermal field theory is particularly useful in analyzing the sequence of phase transitions that is thought to have occurred in the early Universe.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
TFD formalism is a thermal quantum field theory [27-32] where the statistical average of an arbitrary operator is interpreted as the expectation value in a thermal vacuum.
Thermal quantum field theory; algebraic aspects and applications.