Lattice Theories with Nonlinearly Realized Chiral Symmetry

Details Lattice Theories with Nonlinearly Realized Chiral Symmetry Lattice Theories with Nonlinearly Realized Chiral Symmetry

2003-09-16

arxiv.org/abs/hep-lat/0309093v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, Lattice2003(chiral)

Scientific paper

10.1016/S0920-5632(03)02624-0

We present the lattice formulation of effective Lagrangians in which chiral symmetry is realized nonlinearly on the fermion fields. In this framework both the Wilson term removing unphysical doubler fermions and the fermion mass term do not break chiral symmetry. Our lattice formulation allows us to address non-perturbative questions in effective theories of baryons interacting with pions and in models involving constitutent quarks interacting with pions and gluons. With the presented methods, a system containing a non-zero density of static baryons interacting with pions can be studied on the lattice without encountering a complex action problem. This might lead to new insights into the phase diagram of strongly interacting matter at non-zero chemical potential.

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