Spectral functions from the real-time functional renormalization group

Hülsmann S, Schlichting S, Scior P (2020)
Physical Review D 102(9): 096004.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
We employ the functional renormalization group approach formulated on the Schwinger-Keldysh contour to calculate real-time correlation functions in scalar field theories. We provide a detailed description of the formalism, discuss suitable truncation schemes for real-time calculations, as well as the numerical procedure to self-consistently solve the flow equations for the spectral function. Subsequently, we discuss the relations to other perturbative and nonperturbative approaches to calculate spectral functions and present a detailed comparison and benchmark in d = 0 + 1 dimensions.
Erscheinungsjahr
2020
Zeitschriftentitel
Physical Review D
Band
102
Ausgabe
9
Art.-Nr.
096004
ISSN
2470-0010
eISSN
2470-0029
Page URI
https://pub.uni-bielefeld.de/record/2949202

Zitieren

Hülsmann S, Schlichting S, Scior P. Spectral functions from the real-time functional renormalization group. Physical Review D . 2020;102(9): 096004.
Hülsmann, S., Schlichting, S., & Scior, P. (2020). Spectral functions from the real-time functional renormalization group. Physical Review D , 102(9), 096004. doi:10.1103/PhysRevD.102.096004
Hülsmann, S., Schlichting, S., and Scior, P. (2020). Spectral functions from the real-time functional renormalization group. Physical Review D 102:096004.
Hülsmann, S., Schlichting, S., & Scior, P., 2020. Spectral functions from the real-time functional renormalization group. Physical Review D , 102(9): 096004.
S. Hülsmann, S. Schlichting, and P. Scior, “Spectral functions from the real-time functional renormalization group”, Physical Review D , vol. 102, 2020, : 096004.
Hülsmann, S., Schlichting, S., Scior, P.: Spectral functions from the real-time functional renormalization group. Physical Review D . 102, : 096004 (2020).
Hülsmann, Sven, Schlichting, Sören, and Scior, Philipp. “Spectral functions from the real-time functional renormalization group”. Physical Review D 102.9 (2020): 096004.

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arXiv: 2009.04194

Inspire: 1815810

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