On nonequilibrium states in QFT model with boundary interaction
Abstract
We prove that certain nonequilibrium expectation values in the boundary sineGordon model coincide with associated equilibriumstate expectation values in the systems which differ from the boundary sineGordon in that certain extra boundary degrees of freedom (qoscillators) are added. Applications of this result to actual calculation of nonequilibrium characteristics of the boundary sineGordon model are also discussed.
 Publication:

Nuclear Physics B
 Pub Date:
 June 1999
 DOI:
 10.1016/S05503213(99)001984
 arXiv:
 arXiv:hepth/9812091
 Bibcode:
 1999NuPhB.549..529B
 Keywords:

 High Energy Physics  Theory;
 Condensed Matter
 EPrint:
 19 pages, harvmac.tex