This article is cited in 4 papers

Quantum dissipative systems II. String in curved affine-metric space-time

V. E. Tarasov

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University

Abstract: A closed bosonic string in a curved affine-metric spacetime is considered as an example of dissipative quantum field theory. The conformal anomaly of the trace of the energy-momentum tensor for the string on the affine-metric manifold is investigated. The two-loop metric beta function for the two-dimensional nonlinear dissipative sigma model is calculated. Examples of nonflat manifolds that lead to ultraviolet-finite sigma models are found.

Received: 25.05.1993

 English version: Theoretical and Mathematical Physics, 1994, 101:1, 1184–1190

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