ar X iv : h ep - l at / 9 60 70 25 v 1 9 J ul 1 99 6 1 Towards a lattice calculation of the coefficients of the QCD chiral
نویسندگان
چکیده
We discuss a general strategy to compute the coefficients of QCD chiral Lagrangian by using the lattice regularization of QCD with Wilson fermions. This procedure requires the introduction of an effective Lagrangian for lattice QCD as an intermediate step in the calculation. The continuum QCD chiral Lagrangian can be then obtained by expanding the lattice effective Lagrangian in increasing powers of the external momenta. A suitable renormalization procedure is required to account for the chiral symmetry breaking introduced by the Wilson term in the lattice action. In anticipation of a numerical simulation, the lattice effective Lagrangian is computed analytically and investigated in the strong coupling and large N limit.
منابع مشابه
ar X iv : h ep - l at / 9 60 70 83 v 1 3 1 Ju l 1 99 6 1 ANL - HEP - CP - 96 - 55 CHIRAL QCD ( χ QCD ) ∗
Lattice QCD with staggered quarks is augmented by the addition of a chiral 4-fermion interaction. The Dirac operator is now non-singular at mq = 0, decreasing the computing requirements for light quark simulations by at least an order of magnitude. We present preliminary results from simulations at finite and zero temperatures for mq = 0, with and without gauge fields.
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