Naslov
Features of a 2d gauge theory with vanishing chiral condensate

Autori
Landa-Marbán, David ; Bietenholz, Wolfgang ; Hip, Ivan

Izvornik
International journal of modern physics c (0129-1831) 25 (2014), 10; 1450051-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Schwinger model ; Dirac spectrum ; mass anomalous dimension

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA