Scalar spectral functions from the spectral functional renormalization group

被引：0

作者：

Horak, Jan ^{[1
]}

Ihssen, Friederike ^{[1
]}

Pawlowski, Jan M. ^{[1
,2
]}

Wessely, Jonas ^{[1
]}

Wink, Nicolas ^{[3
]}

机构：

[1] Heidelberg Univ, Inst Theoret Phys, Philosophenweg 16, D-69120 Heidelberg, Germany

[2] ExtreMe Matter Inst EMMI, GSI, Planckstr 1, D-64291 Darmstadt, Germany

[3] Tech Univ Darmstadt, Inst Kernphys Theoriezentrum, D-64289 Darmstadt, Germany

来源：

PHYSICAL REVIEW D | 2024年 / 110卷 / 05期

关键词：

CALLAN-SYMANZIK EQUATION; STATES;

D O I：

10.1103/PhysRevD.110.056009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute spectral functions in a scalar 4-theory in three spacetime dimensions via the spectral functional renormalization group. This approach allows for the direct, manifestly Lorentz covariant computation of correlation functions in Minkowski spacetime, including a physical on-shell renormalization. We present numerical results for the spectral functions of the two- and four-point correlation functions for different values of the coupling parameter. These results agree very well with those obtained from another functional real-time approach, the spectral Dyson-Schwinger equation.

引用

页数：23

共 50 条

[41] On Convex Hull of Orthogonal Scalar Spectral Functions of a Carleman Operator
Bahri, S. M.
BOLETIM SOCIEDADE PARANAENSE DE MATEMATICA, 2008, 26 (1-2): : 9 - 18
[42] SPECTRAL-LUMINOSITY FUNCTIONS, SCALAR LINEARITY, AND CHROMATIC ADAPTATION
POKORNY, J
JIN, Q
SMITH, VC
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1993, 10 (06): : 1304 - 1313
[43] SATURATION PROBLEM OF A SUM RULE OF SCALAR AND PSEUDOSCALAR SPECTRAL FUNCTIONS
WOO, CH
PHYSICAL REVIEW LETTERS, 1967, 19 (09) : 537 - &
[44] Spectral, statistical, and vertex functions in scalar quantum field theory far from equilibrium
Shen, Linda
Berges, Juergen
PHYSICAL REVIEW D, 2020, 101 (05)
[45] Spectral functions in one-dimensional quantum systems at finite temperature using the density matrix renormalization group
Barthel, Thomas
Schollwoeck, Ulrich
White, Steven R.
PHYSICAL REVIEW B, 2009, 79 (24):
[46] Numerical renormalization group calculation of near-gap peaks in spectral functions of the Anderson model with superconducting leads
Hecht, T.
Weichselbaum, A.
von Delft, J.
Bulla, R.
JOURNAL OF PHYSICS-CONDENSED MATTER, 2008, 20 (27)
[47] Numerical renormalization-group study of the symmetric Anderson-Holstein model: Phonon and electron spectral functions
Jeon, GS
Park, TH
Choi, HY
PHYSICAL REVIEW B, 2003, 68 (04)
[48] Root-N Krylov-space correction vectors for spectral functions with the density matrix renormalization group
Nocera, A.
Alvarez, G.
PHYSICAL REVIEW B, 2022, 106 (20)
[49] MOMENTS OF SPECTRAL FUNCTIONS AND SIZE OF RENORMALIZATION CONSTANTS IN QUANTUM FIELD THEORY
KHRIPLOVICH, IB
SOVIET JOURNAL OF NUCLEAR PHYSICS-USSR, 1966, 2 (05): : 677 - +
[50] Spectral renormalization group for the Gaussian model and ψ4 theory on nonspatial networks
Tuncer, Asli
Erzan, Ayse
PHYSICAL REVIEW E, 2015, 92 (02)

← 1 2 3 4 5 →