Quantum electrodynamics in two dimensions at a finite-temperature thermofield bosonization approach
The Schwinger model at finite temperature is analyzed using the thermofield dynamics formalism. The operator solution due to Lowenstein and Swieca is generalized to the case of finite temperature within the thermofield bosonization approach. The general properties of the statistical-mechanical ensem...
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| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2011
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| In: |
Journal of physics. A, Mathematical and theoretical
Year: 2010, Jahrgang: 44, Heft: 2, Pages: 1-21 |
| ISSN: | 1751-8121 |
| DOI: | 10.1088/1751-8113/44/2/025401 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1751-8113/44/2/025401
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| Verfasserangaben: | LV Belvedere, RLPG Amaral, KD Rothe and AF Rodrigues |
| Zusammenfassung: | The Schwinger model at finite temperature is analyzed using the thermofield dynamics formalism. The operator solution due to Lowenstein and Swieca is generalized to the case of finite temperature within the thermofield bosonization approach. The general properties of the statistical-mechanical ensemble averages of observables in the Hilbert subspace of gauge invariant thermal states are discussed. The bare charge and chirality of the Fermi thermofields are screened, giving rise to an infinite number of mutually orthogonal thermal ground states. One consequence of the bare charge and chirality selection rule at finite temperature is that there are innumerably many thermal vacuum states with the same total charge and chirality of the doubled system. The fermion charge and chirality selection rules at finite temperature turn out to imply the existence of a family of thermal theta-vacua states parametrized with the same number of parameters as in the zero temperature case. |
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| Beschreibung: | Gesehen am 16.03.2022 First published online: 7 December 2010 |
| Beschreibung: | Online Resource |
| ISSN: | 1751-8121 |
| DOI: | 10.1088/1751-8113/44/2/025401 |