Continuum physics with overlap fermions
نویسندگان
چکیده
We calculate mud =(mu+md)/2, ms, fπ and fK in the quenched continuum limit with UV-filtered overlap fermions. We see rather small scaling violations on lattices as coarse as a ≃ 1GeV and conjecture that similar advantages would be manifest in unquenched studies.
منابع مشابه
Continuum physics with quenched overlap fermions
We calculate mud =(mu+md)/2, ms, fπ and fK in the quenched continuum limit with UV-filtered overlap fermions. We see rather small scaling violations on lattices as coarse as a ≃ 1GeV and conjecture that similar advantages would be manifest in unquenched studies.
متن کاملUnited Nations Educational Scientific and Cultural Organization INTERNATIONAL CENTRE FOR THEORETICAL PHYSICS ON THE OVERLAP PRESCRIPTION FOR LATTICE REGULARIZATION OF CHIRAL FERMIONS
Feynman rules for the vacuum amplitude of fermions coupled to external gauge and Higgs fields in a domain wall lattice model are derived using time–dependent perturbation theory. They have a clear and simple structure corresponding to 1–loop vacuum graphs. Their continuum approximations are extracted by isolating the infrared singularities and it is shown that, in each order, they reduce to vac...
متن کاملQuark spectra and light hadron phenomenology from overlap fermions with improved gauge field action ∗
We present first results from a simulation of quenched overlap fermions with improved gauge field action. Among the quantities we study are the spectral properties of the overlap operator, the chiral condensate and topological charge, quark and hadron masses, and selected nucleon matrix elements. To make contact with continuum physics, we compute the renormalization constants of quark bilinear ...
متن کاملA renormalisation group derivation of the overlap formulation
Starting from the continuum Dirac operator, I construct a renormalisation group blocking which transforms the continuum action into a lattice action, and I specifically consider the Wilson and overlap formalisms. For Wilson fermions the inverse blocking is non-local and thus invalid. However, I proceed to demonstrate that it is possible to construct a valid, local, blocking which, though depend...
متن کاملUw/pt–96–04 Doe/er/40561-254-int96-00-123
We consider anomaly free combinations of chiral fermions coupled to U(1) gauge fields on a 2D torus first in the continuum and then on the lattice in the overlap formulation. Both in the continuum and on the lattice, when the background consists of sufficiently large constant gauge potentials the action induced by the fermions varies significantly under certain singular gauge transformations. “...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2005