Chiral Perturbation Theory and Finite Size Effects on the Nucleon Mass in unquenched QCD ∗
نویسنده
چکیده
Chiral Perturbation Theory and Finite Size Effects on the Nucleon Mass in unquenched QCD ∗ A. Ali Khan, T. Bakeyev, M. Göckeler, T.R. Hemmert, R. Horsley , A.C. Irving, D. Pleiter, P.E.L. Rakow, G. Schierholz, and H. Stüben (QCDSF and UKQCD Collaborations) Institut für Physik, Humboldt-Universität zu Berlin, 12489 Berlin, Germany Joint Institute for Nuclear Research, 141980 Dubna, Russia Institut für Theoretische Physik, Universität Leipzig, 04109 Leipzig, Germany Institut für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany Physik-Department, Theoretische Physik T39, TU München, 85747 Garching, Germany School of Physics, The University of Edinburgh, Edinburgh EH9 3JZ, UK Theoretical Physics Division, Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX, UK
منابع مشابه
The nucleon mass in N f = 2 lattice QCD : finite size effects from chiral perturbation theory
In the framework of relativistic SU(2)f baryon chiral perturbation theory we calculate the volume dependence of the nucleon mass up to and including O(p4). Since the parameters in the resulting finite size formulae are fixed from the pion mass dependence of the large volume nucleon masses and from phenomenology, we obtain a parameter-free prediction of the finite size effects. We present mass d...
متن کاملChiral Structure in Baryon Magnetic Moments
The issue of chiral extrapolation has been highlighted as an important problem facing modern lattice QCD simulations [1,2], if one is to make any comparison with experiment. Extrapolations in quark mass are nontrivial because of nonanalytic contributions which arise as a consequence of dynamically broken chiral symmetry in the QCD vacuum [3]. At typical lattice quark masses there is little evid...
متن کاملChiral extrapolation of lattice data for B-meson decay constant
The B-meson decay constant fB has been calculated from unquenched lattice QCD in the unphysical region. For extrapolating the lattice data to the physical region, we propose a phenomenological functional form based on the effective chiral perturbation theory for heavy mesons, which respects both the heavy quark symmetry and the chiral symmetry, and the non-relativistic constituent quark model w...
متن کاملChiral perturbation theory for twisted mass QCD
Quantum Chromodynamics on a lattice with Wilson fermions and a chirally twisted mass term for two degenerate quark flavours is considered in the framework of chiral perturbation theory. The pion masses and decay constants are calculated in next-to-leading order including terms linear in the lattice spacing a. We treat both unquenched and partially quenched QCD. We also discuss the phase structu...
متن کاملMatching Current Correlators in Lattice QCD to Chiral Perturbation Theory
Chiral perturbation theory gives direct and unambiguous predictions for the form of various two-point hadronic correlators at low momentum in terms of a finite set of couplings in a chiral Lagrangian. In this paper we study the feasibility of extracting the couplings in the chiral Lagrangian (through 1-loop order) by fitting two-point correlators computed in lattice QCD to the predicted chiral ...
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 2003