The interplay between mass, volume, θ, and <\psibarψ> in N-flavor QED_2
arXiv:hep-th/9510090 · doi:10.1103/PhysRevD.53.7255
Abstract
The Schwinger model (QED_2) with N flavors of massive fermions on a circle of circumference L, or equivalently at finite temperature T, is reduced to a quantum mechanical system of N-1 degrees of freedom. With degenerate fermion masses (m) the chiral condensate develops a cusp singularity at in the limit L -> or T -> 0, which is removed by a large asymmetry in the fermion masses. Physical quantities sensitively depend on the parameter mL or m/T, and the m -> 0 and L -> (or T -> 0) limits do not commute. A detailed analysis is given for N=3.
LaTeX + 5 figures (4 PS + 1 eepic); uses RevTeX, epsf, eepic
References in corpus (6)
Cited by in corpus (15)
- Theta dependence of SU(N) gauge theories in the presence of a topological term
- Bosonized Massive N-flavor Schwinger Model
- Vacuum Structure of Charge k Two-Dimensional QED and Dynamics of an Anti D-String Near an O1- plane
- Can Theta/N Dependence for Gluodynamics be Compatible with 2 pi Periodicity in Theta ?
- Comparison of renormalization group schemes for sine-Gordon type models
- Gauge Theory Description of Spin Ladders
- Massless fermions in multi-flavor QED_2
- Finite Temperature Schwinger Model with Chirality Breaking Boundary Conditions
- Anomalous Behavior in the Massive Schwinger Model
- Antiferromagnetic S=1/2 Heisenberg Chain and the Two-flavor Massless Schwinger Model
- IR-Divergence and Anomalous Temperature Dependence of the Condensate in the Quenched Schwinger Model
- Renormal-order improvement of the Schwinger mass
- Pion-Pion Scattering in Two Dimensions
- Remark on the Potential Function of the Linear Sigma Model
- Schwinger model on a half-line