Classical Limit in Scalar QFT at High Temperature

Details Classical Limit in Scalar QFT at High Temperature Classical Limit in Scalar QFT at High Temperature

1997-08-04

arxiv.org/abs/hep-ph/9708229v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 5 pages. Talk given at Eotvos Conference in Science: Strong and Electroweak Matter (SEWM 97), Eger, Hungary, 21-25 May

Scientific paper

It is shown that in a scalar quantum field theory at high temperatures we can compute even time dependent observables from an effective theory, which can be interpreted as a (nonlocal) classical statistical field theory. We examine the retarded Greens function in the local approximation, and define the classical self energy. Its imaginary part agrees with the quantum case in the leading order.

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