Lehner, C. 
; Ohtani, M. ; Verbaarschot, J. J. M. ; Wettig, T.
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physical Review D |
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| Verlag: | AMER PHYSICAL SOC |
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| Ort der Veröffentlichung: | COLLEGE PK |
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| Band: | 79 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 7 |
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| Datum: | 2009 |
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| Institutionen: | Physik > Institut für Theoretische Physik > Lehrstuhl Professor Braun > Arbeitsgruppe Tilo Wettig |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1103/PhysRevD.79.074016 | DOI |
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| Stichwörter / Keywords: | QCD DIRAC OPERATOR; U(1) PROBLEM; FINITE-TEMPERATURE; ISOSPIN DENSITY; ZERO VIRTUALITY; SYMMETRY; SPECTRUM; MODEL; UNIVERSALITY; INSTANTONS; |
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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: | 67292 |
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Zusammenfassung
We study the effect of topology for a random matrix model of QCD at nonzero imaginary chemical potential or nonzero temperature. Nonuniversal fluctuations of Dirac eigenvalues lead to normalization factors that contribute to the theta dependence of the partition function. These normalization factors have to be canceled in order to reproduce the theta dependence of the QCD partition function. The ...
Zusammenfassung
We study the effect of topology for a random matrix model of QCD at nonzero imaginary chemical potential or nonzero temperature. Nonuniversal fluctuations of Dirac eigenvalues lead to normalization factors that contribute to the theta dependence of the partition function. These normalization factors have to be canceled in order to reproduce the theta dependence of the QCD partition function. The reason for this behavior is that the topological domain of the Dirac spectrum (the region of the Dirac spectrum that is sensitive to the topological charge) extends beyond the microscopic domain at nonzero imaginary chemical potential or temperature. Such behavior could persist in certain lattice formulations of QCD.
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