| Автор | Tomaz Prosen |
| Дата выпуска | 1998-09-18 |
| dc.description | A dynamical Lie algebraic method for the construction of quantum invariants of motion in non-integrable many-body systems of infinite size is proposed and applied to a simple but generic toy model, namely an infinite kicked t - V chain of interacting spinless fermions. The transition from an integrable via quasi-integrable ( intermediate) to a quantum ergodic (quantum mixing) regime in parameter space is investigated. A dynamical phase transition between an ergodic and intermediate (neither ergodic nor completely integrable) regime in thermodynamic limit is proposed. The existence or non-existence of local conservation laws corresponds to the intermediate or ergodic regime, respectively. The computation of time-correlation functions of typical observables by means of local conservation laws is found to be fully consistent with direct calculations on finite systems. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Quantum invariants of motion in a generic many-body system |
| Тип | lett |
| DOI | 10.1088/0305-4470/31/37/004 |
| Print ISSN | 0305-4470 |
| Журнал | Journal of Physics A: Mathematical and General |
| Том | 31 |
| Первая страница | L645 |
| Последняя страница | L653 |
| Аффилиация | Tomaz Prosen; Physics Department, Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, 1111 Ljubljana, Slovenia |
| Выпуск | 37 |
