Gattringer, Christof ; Hoffmann, Roland ; Schaefer, Stefan 
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physics Letters B |
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| Verlag: | ELSEVIER SCIENCE BV |
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| Ort der Veröffentlichung: | AMSTERDAM |
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| Band: | 535 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 1-4 |
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| Seitenbereich: | S. 358-362 |
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| Datum: | 2002 |
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| Institutionen: | Physik > Institut für Theoretische Physik |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1016/S0370-2693(02)01757-4 | DOI |
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| Stichwörter / Keywords: | SINGER-INDEX-THEOREM; LATTICE QCD; FINITE-TEMPERATURE; DIRAC OPERATORS; CHIRAL-SYMMETRY; U(1) PROBLEM; ZERO; CONSTRUCTION; EXCITATIONS; INSTANTONS; lattice gauge theory; topology; index theorem |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 530 Physik |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 72970 |
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Zusammenfassung
We compute the topological susceptibility chi(t) in SU(3) lattice gauge theory using fermionic methods based on the Atiyah-Singer index theorem. Near the phase transition we find a smooth crossover behavior for chi(t) with values decreasing from (191(5) MeV)(4) to (100(5) MeV)(4) as we increase the temperature from 0.88T(c) to 1.31T(c), showing that topological excitations exist far above T-c. ...
Zusammenfassung
We compute the topological susceptibility chi(t) in SU(3) lattice gauge theory using fermionic methods based on the Atiyah-Singer index theorem. Near the phase transition we find a smooth crossover behavior for chi(t) with values decreasing from (191(5) MeV)(4) to (100(5) MeV)(4) as we increase the temperature from 0.88T(c) to 1.31T(c), showing that topological excitations exist far above T-c. Our study is the first large scale analysis of the topological susceptibility at high temperature based on the index theorem and the results agree well with field theoretical methods. (C) 2002 Elsevier Science B.V. All rights reserved.
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