Non-integrable Quantum Field Theories as Perturbations of Certain Integrable Models
| dc.creator | Delfino, G. | |
| dc.creator | Mussardo, G. | |
| dc.creator | Simonetti, P. | |
| dc.date | 1996-03-04 | |
| dc.date.accessioned | 2026-07-07T10:34:16Z | |
| dc.date.available | 2026-07-07T10:34:16Z | |
| dc.description | We approach the study of non--integrable models of two--dimensional quantum field theory as perturbations of the integrable ones. By exploiting the knowledge of the exact $S$-matrix and Form Factors of the integrable field theories we obtain the first order corrections to the mass ratios, the vacuum energy density and the $S$-matrix of the non-integrable theories. As interesting applications of the formalism, we study the scaling region of the Ising model in an external magnetic field at $T \sim T_c$ and the scaling region around the minimal model $M_{2,7}$. For these models, a remarkable agreement is observed between the theoretical predictions and the data extracted by a numerical diagonalization of their Hamiltonian. | |
| dc.description | 60 pages, latex, 9 figures | |
| dc.identifier | https://arxiv.org/abs/hep-th/9603011 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9603011 | |
| dc.identifier | Nucl.Phys.B473:469-508,1996 | |
| dc.identifier | doi:10.1016/0550-3213(96)00265-9 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179421 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Condensed Matter | |
| dc.title | Non-integrable Quantum Field Theories as Perturbations of Certain Integrable Models | |
| dc.type | text |