Hamiltonian Lattice QCD with Wilson Fermions at Strong Coupling
Yi-Zhong Fang, and Xiang-Qian Luo (Zhongshan University, China)
TL;DR
This paper systematically studies Hamiltonian lattice QCD with Wilson fermions at strong coupling, calculating key physical quantities and comparing methods, with potential applications to finite-density QCD.
Contribution
It introduces a strong-coupling expansion approach with Bogoliubov transformation for Hamiltonian lattice QCD with Wilson fermions, providing new computational insights.
Findings
Calculated vacuum energy and chiral condensate.
Determined pseudo-scalar and vector meson masses.
Compared results with Luo and Chen's unitary transformation method.
Abstract
Hamiltonian lattice QCD with Wilson fermions is investigated systematically by strong-coupling expansion up to the second order. The effective Hamiltonian is diagonalized by Bogoliubov transformation. The vacuum energy, chiral condensate, pseudo-scalar and vector meson masses are calculated. The comparison with the unitary transformation method by Luo and Chen is also made. The method discussed in this paper has potential application to QCD at finite density.
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