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Fermionic spectral functions with the functional renormalization group

Tripolt, Ralf-Arno ; Weyrich, Johannes ; Smekal, Lorenz von ; Wambach, Jochen (2022):
Fermionic spectral functions with the functional renormalization group. (Publisher's Version)
In: Physical Review D, 98 (9), American Physical Society, ISSN 2470-0010, e-ISSN 2470-0029,
DOI: 10.26083/tuprints-00012719,
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Item Type: Article
Origin: Secondary publication
Status: Publisher's Version
Title: Fermionic spectral functions with the functional renormalization group
Language: English
Abstract:

We present first results on the calculation of fermionic spectral functions from analytically continued flow equations within the functional renormalization group approach. Our method is based on the same analytic continuation from imaginary to real frequencies that was developed and used previously for bosonic spectral functions. In order to demonstrate the applicability of the method also for fermionic correlations we apply it here to the real-time quark propagator in the quark-meson model and calculate the corresponding quark spectral functions in the vacuum.

Journal or Publication Title: Physical Review D
Journal volume: 98
Issue Number: 9
Publisher: American Physical Society
Collation: 14 Seiten
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 09 Mar 2022 15:20
Last Modified: 10 Mar 2022 09:56
DOI: 10.26083/tuprints-00012719
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-127195
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12719
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