QCD at nonzero density and canonical partition functions with Wilson fermions
نویسندگان
چکیده
منابع مشابه
Hamiltonian Lattice QCD with Wilson Fermions at Strong Coupling
Hamiltonian lattice QCD with Wilson fermions is investigated systematically by strongcoupling 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 ...
متن کاملQCD with dynamical Wilson fermions at β = 5.5 ∗
We study QCD with two flavors of dynamical Wilson fermions at β = 5.5 and three values of κ. The corresponding pion masses are 0.375, 0.324 and 0.262 in lattice units, with pion to rho mass ratios of 0.76, 0.71 and 0.62, respectively. We use the configurations to compute the heavy quark potential, leading to lattice spacings of 0.110, 0.105 and 0.099 fm, and to compute spectroscopy for several ...
متن کاملHamiltonian lattice quantum chromodynamics at finite density with Wilson fermions
Quantum chromodynamics (QCD) at sufficiently high density is expected to undergo a chiral phase transition. In Lagrangian SU(3) lattice gauge theory, the standard approach breaks down at large chemical potential μ, due to the complex action problem. (QCD at large μ is of particular importance for neutron star or quark star physics). The Hamiltonian formulation of lattice QCD doesn’t encounter s...
متن کاملApproximate Ginsparg-wilson Fermions for Qcd
Lattice fermions obeying the Ginsparg-Wilson relation do correctly represent the physical properties related to chirality. This can be achieved by local fermions, which involve an infinite number of couplings, however. For practical purposes, it is useful to first construct approximate Ginsparg-Wilson fermions within a short range. We report on a successful construction in QCD at β = 6. The goo...
متن کاملWilson Fermions at Finite Density as a Band Theory
We analyze the feasibility of using Wilson fermions at finite density to study the physics of conduction electrons in band theory. We only include the interaction of the fermions with an external electromagnetic field. We study properties such as the density of states or the electric conductivity, both by analytical means and with numerical methods based on a path-integral formalism, finding a ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2011
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.83.034502