Spectral functions from the functional renormalization group
In this article we wish to present a new method to obtain spectral functions at finite temperature and density from the Functional Renormalization Group (FRG). The FRG offers a powerful non-perturbative tool to deal with phase transitions in strong-interaction matter under extreme conditions and the...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2 May 2014
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| In: |
Nuclear physics. A, Nuclear and hadronic physics
Year: 2014, Volume: 928, Pages: 156-167 |
| ISSN: | 1873-1554 |
| DOI: | 10.1016/j.nuclphysa.2014.04.027 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.nuclphysa.2014.04.027 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0375947414001092 
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| Author Notes: | Jochen Wambach, Ralf-Arno Tripolt, Nils Strodthoff, Lorenz von Smekal |
| Summary: | In this article we wish to present a new method to obtain spectral functions at finite temperature and density from the Functional Renormalization Group (FRG). The FRG offers a powerful non-perturbative tool to deal with phase transitions in strong-interaction matter under extreme conditions and their fluctuation properties. Based on a thermodynamically consistent truncation we derive flow equations for pertinent two-point functions in Minkowski space-time. We demonstrate the feasibility of the method by calculating mesonic spectral functions in hot and dense hadronic matter using the quark-meson model as a simple example. |
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| Item Description: | Gesehen am 31.08.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1873-1554 |
| DOI: | 10.1016/j.nuclphysa.2014.04.027 |