Features of a 2d gauge theory with vanishing chiral condensate (CROSBI ID 230406)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Landa-Marbán, David ; Bietenholz, Wolfgang ; Hip, Ivan
engleski
Features of a 2d gauge theory with vanishing chiral condensate
The Schwinger model with N_f ≥ 2 flavors is a simple example for a fermionic model with zero chiral condensate Σ (in the chiral limit). We consider numerical data for two light flavors, based on simulations with dynamical chiral lattice fermions. We test properties and predictions that were put forward in the recent literature for models with Σ = 0, which include IR conformal theories. In particular, we probe the decorrelation of low lying Dirac eigenvalues, and we discuss the mass anomalous dimension and its IR extrapolation. Here, we encounter subtleties, which may urge caution with analogous efforts in other models, such as multi-flavor QCD.
Schwinger model ; Dirac spectrum ; mass anomalous dimension
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Podaci o izdanju
25 (10)
2014.
1450051-1-1450051-15
objavljeno
0129-1831
10.1142/S012918311450051X