Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-08-20
Nucl.Phys. B645 (2002) 321-336
Physics
High Energy Physics
High Energy Physics - Lattice
19 pages, 12 figures
Scientific paper
10.1016/S0550-3213(02)00869-6
Non-compact three-dimensional QED is studied by computer simulations to understand its chiral symmetry breaking features for N_f>=2, on lattice volumes up to 50^3 and bare masses as low as ma=0.0000625. We compute the chiral condensate, scalar and pseudoscalar susceptibilities, and the masses of scalar and pseudoscalar mesons. Finite volume effects and discretisation artifacts are carefully monitored. Our results reveal no decisive signal for chiral symmetry breaking for any N_f>=2. For N_f=2 the dimensionless condensate can be bounded by beta^2
Hands Simon J.
Kogut John B.
Strouthos Costas G.
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