scholarly journals Renormalization group flow equation at finite density

2000 ◽  
Vol 61 (3) ◽  
Author(s):  
J. Meyer ◽  
G. Papp ◽  
H.-J. Pirner ◽  
T. Kunihiro
Keyword(s):  
Renormalization Group ◽  
Flow Equation ◽  
Renormalization Group Flow ◽  
Finite Density ◽  
Group Flow

scholarly journals Convergence of the expansion of the renormalization group flow equation

2000 ◽  
Vol 61 (9) ◽  
Author(s):  
G. Papp ◽  
B.-J. Schaefer ◽  
H.-J. Pirner ◽  
J. Wambach
Keyword(s):  
Renormalization Group ◽  
Flow Equation ◽  
Renormalization Group Flow ◽  
Group Flow

RENORMALIZATION GROUP FLOW IN COLD AND DENSE YUKAWA THEORY

2007 ◽  
Vol 16 (09) ◽  
pp. 2806-2809 ◽  
Author(s):  
LETÍCIA F. PALHARES ◽  
EDUARDO S. FRAGA
Keyword(s):  
Renormalization Group ◽  
Fermion Mass ◽  
Zero Temperature ◽  
Renormalization Group Flow ◽  
Finite Density ◽  
Mass Effects ◽  
Fermion Masses ◽  
Group Flow ◽  
Yukawa Theory

We analyze the role of renormalization group (RG) running of the coupling and fermion masses in perturbative Yukawa theory at finite density. The dependence of the RG flow on the number of fermion flavors is discussed. Results for the fermionic contribution to the two-loop pressure at zero temperature and finite density are presented for NF = 4, and finite fermion mass effects are shown to be an important correction.

scholarly journals Ruppeiner curvature along a renormalization group flow

2021 ◽  
pp. 136450
Author(s):  
Pavan Kumar Yerra ◽  
Chandrasekhar Bhamidipati
Keyword(s):  
Renormalization Group ◽  
Renormalization Group Flow ◽  
Group Flow

scholarly journals RG flows of integrable σ-models and the twist function

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
François Delduc ◽  
Sylvain Lacroix ◽  
Konstantinos Sfetsos ◽  
Konstantinos Siampos
Keyword(s):  
Renormalization Group ◽  
Large Class ◽  
Rational Function ◽  
Integrable Model ◽  
Renormalization Group Flow ◽  
Flow Equations ◽  
Non Linear ◽  
Group Flow

Abstract In the study of integrable non-linear σ-models which are assemblies and/or deformations of principal chiral models and/or WZW models, a rational function called the twist function plays a central rôle. For a large class of such models, we show that they are one-loop renormalizable, and that the renormalization group flow equations can be written directly in terms of the twist function in a remarkably simple way. The resulting equation appears to have a universal character when the integrable model is characterized by a twist function.

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