منابع مشابه
clover-improved Wilson fermions
We report calculations of the parameter BK appearing in the ∆S = 2 neutral kaon mixing matrix element, whose uncertainty limits the power of unitarity triangle constraints for testing the standard model or looking for new physics. We use two flavours of dynamical clover-improved Wilson lattice fermions and look for dependence on the dynamical quark mass at fixed lattice spacing. We see some evi...
متن کاملChirally Improving Wilson Fermions * †
It is possible to improve the chiral behaviour and the approach to the continuum limit of correlation functions in lattice QCD with standard and twisted Wilson fermions by taking arithmetic averages of correlators computed in theories regularized with Wilson terms of opposite sign. To avoid the problem of the spurious zero-modes of the Wilson–Dirac operator, twisted-mass lattice QCD should be u...
متن کاملChiral Condensate with Wilson Fermions
It is well known that lattice gauge theories with Wilson fermions present difficulties when one tries to evaluate chiral condensates because of the explicit chiral symmetry breaking [l]. In general the chiral condensate has a perturbative part which needs to be subtracted in order to evaluate the continuum renormalization group invariant contribution. Since the perturbative part is given by a d...
متن کاملHadron spectrum with Wilson fermions.
We present results of a high statistics study of the quenched spectrum using Wilson fermions at β = 6.0 on 32 × 64 lattices. We calculate the masses of mesons and baryons composed of both degenerate and non-degenerate quarks. Using non-degenerate quark combinations allows us to study baryon mass splittings in detail. We find significant deviations from the lowest order chiral expansion, deviati...
متن کاملWilson Fermions at Nite Temperature
I conjecture on the phase structure expected for lattice gauge theory with two avors of Wilson fermions, concentrating on large values of the hopping parameter. Numerous phases are expected, including the conventional connnement and deconnnement phases, as well as an Aoki phase with spontaneous breaking of avor and parity and a large hopping phase corresponding to negative quark masses.
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 Letters
سال: 2012
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.108.122003