Published February 1996 | Version v1
Journal article Metadata-only

Some new results in O(a) improved lattice QCD

Creators

  • 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  • 2. Max-Planck-Institut fuer Physik, Muenchen (Germany)
  • 3. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany). Inst. fuer Hochenergiephysik
  • 4. European Organization for Nuclear Research, Geneva (Switzerland). Theory Div.
  • 5. Forschungszentrum Juelich GmbH (Germany). Hoechstleistungsrechenzentrum
  • 6. Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik

Description

It is shown how on-shell O(a) improvement can be implemented non-perturbatively in lattice QCD with Wilson quarks. Improvement conditions are obtained by requiring the PCAC relation to hold exactly in certain matrix elements. These are derived from the QCD Schroedinger functional which enables us to simulate directly at vanishing quark masses. In the quenched approximation and for bare couplings in the range 0≤g0≤1, we determine the improved action, the improved axial current, the additive renormalization of the quark mass and the isospin current normalization constants ZA and ZV. (orig.)

Additional details

Publishing Information

Journal Title
Nuclear Physics. B, Proceedings Supplements
Journal Volume
53
Journal Page Range
p. 905-913.
ISSN
0920-5632
CODEN
NPBSE7

Conference

Title
14. international symposium on lattice field theory (Lattice-14).
Dates
4-8 Jun 1996.
Place
St. Louis, MO (United States).

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
28038717
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ASYMPTOTIC SOLUTIONS; AXIAL-VECTOR CURRENTS; CHIRALITY; COMPUTERIZED SIMULATION; FEYNMAN PATH INTEGRAL; FUNCTIONAL ANALYSIS; FUNCTIONALS; ISOSPIN; LATTICE FIELD THEORY; MASS RENORMALIZATION; MASSLESS PARTICLES; MATRIX ELEMENTS; PCAC THEORY; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; QUARKS; SCHROEDINGER PICTURE; VECTOR CURRENTS; WARD IDENTITY
Descriptors DEC
ALGEBRAIC CURRENTS; CONSTRUCTIVE FIELD THEORY; CURRENTS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; INTEGRALS; MATHEMATICS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; RENORMALIZATION; SIMULATION