dorsal/arxiv
View SchemaDiagonalization of full finite temperature Green's function by quasi-particles
| Authors | P. A. Henning, H. Umezawa |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9304006 |
| URL | https://arxiv.org/abs/nucl-th/9304006 |
| DOI | 10.1016/0370-2693(93)91421-I |
| Journal | Phys.Lett. B303 (1993) 209-214 |
Abstract
For thermal systems, standard perturbation theory breaks down because of the absence of stable, observable asymptotic states. We show, how the introduction of {\it statistical} quasi-particles (stable, but not observable) gives rise to a consistent description. Statistical and spectral information can be cleanly separated also for interacting systems.
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"abstract": "For thermal systems, standard perturbation theory breaks down because of the\nabsence of stable, observable asymptotic states. We show, how the introduction\nof {\\it statistical} quasi-particles (stable, but not observable) gives rise to\na consistent description. Statistical and spectral information can be cleanly\nseparated also for interacting systems.",
"arxiv_id": "nucl-th/9304006",
"authors": [
"P. A. Henning",
"H. Umezawa"
],
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"doi": "10.1016/0370-2693(93)91421-I",
"journal_ref": "Phys.Lett. B303 (1993) 209-214",
"title": "Diagonalization of full finite temperature Green\u0027s function by quasi-particles",
"url": "https://arxiv.org/abs/nucl-th/9304006"
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