Classical Limit in Scalar QFT at High Temperature
Abstract
Description
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.
LaTeX, 5 pages. Talk given at Eotvos Conference in Science: Strong and Electroweak Matter (SEWM 97), Eger, Hungary, 21-25 May 1997
LaTeX, 5 pages. Talk given at Eotvos Conference in Science: Strong and Electroweak Matter (SEWM 97), Eger, Hungary, 21-25 May 1997