|
|||||
|
|
Finite-volume form factors in semi-classical approximation |
|
| Authors: | G Mussardo V Riva G Sotkov |
| Institution: | a International School for Advanced Studies, Via Beirut 1, 34100, Trieste, Italy b Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, Trieste, Italy c Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, Sao Paulo, Brazil |
| Abstract: | A semi-classical approach is used to obtain Lorentz covariant expressions for the form factors between the kink states of a quantum field theory with degenerate vacua. Implemented on a cylinder geometry it provides an estimate of the spectral representation of correlation functions in a finite volume. Illustrative examples of the applicability of the method are provided by the sine-Gordon and the broken φ4 theories in 1+1 dimensions. |
| Keywords: | Form factors Kink solutions in finite volume Spectral density in finite volume |
| 本文献已被 ScienceDirect 等数据库收录！ | |