Renormalization Flow of Bound States
By H. Gies, C. Wetterich. 2001
175 citations recorded by the source corpus.
A renormalization group flow equation with a scale-dependent transformation of field variables gives a unified description of fundamental and composite degrees of freedom. In the context of the effective average action, we study the renormalization flow of scalar bound states which are formed out of fundamental fermions. We use the gauged Nambu–Jona-Lasinio model at weak gauge coupling as an example. Thereby, the notions of bound state or fundamental particle become scale dependent, being classified by the fixed-point structure of the flow of effective couplings.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/9f2445347ef7958a816d02cba3f5a0ff20b04300
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In Nuclear and High Energy Physics
Citations in the corpus
- Functional renormalization group approach to correlated fermion systems (2011, methodology): “The (re-)generated twofermion interaction can be decoupled at each step in the flow by a procedure called dynamical bosonization (Floerchinger and Wetterich, 2009; Gies and Wetterich, 2002, 2004).”
- Polyakov loop modeling for hot QCD (2017, background): “To deal with composite states in general within the framework of the FRG equation, the wavefunction renormalization plays an essential role, which can be explicitly seen in the argument of the socalled rebosonization procedure [140].”
- The nonperturbative functional renormalization group and its applications (2020, background): “Decoupling these at each step in the flow by a scale-dependent “dynamical bosonisation” [585, 586], one obtains a substantial quantitative improvement [587].”