Published September 2002 | Version v1
Report Metadata-only

Recent results on the running coupling in QCD with two massless flavours

Creators

  • 1. Deutsches Elektronen-Synchrotron (DESY), Zeuthen (Germany)
  • 2. Universita Milano-Bicocca, Milano (Italy). INFN
  • 3. Muenster Univ. (Germany). Inst. fuer Theoretische Physik 1
  • 4. Humboldt-Universitaet, Berlin (Germany). Inst. fuer Physik

Description

We report on the latest results on the running coupling of two flavour QCD in the Schroedinger functional scheme. Results for the step scaling function are obtained from simulations on lattice L/a = 8 and L/a = 16 which confirm the first results from lattices L/a = 4, 5, 6 presented one year ago by the ALPHA collaboration. We also discuss some algorithmic aspects, in particular concerning the occurrence of metastable states. A modified sampling, in order to estimate the proper weight of these states in the path integral, is proposed and tested. (orig.)

Availability note (English)

Available from TIB Hannover: RA 2999(02-124)

Additional details

Publishing Information

Imprint Pagination
4 p.
ISSN
0418-9833
Report number
DESY--02-124

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
33066363
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Non-conventional Literature
Descriptors DEI
ALGORITHMS; COUPLING CONSTANTS; FEYNMAN PATH INTEGRAL; FLAVOR MODEL; FUNCTIONAL ANALYSIS; LATTICE FIELD THEORY; METASTABLE STATES; QUANTUM CHROMODYNAMICS; SCALING LAWS; SCHROEDINGER PICTURE
Descriptors DEC
COMPOSITE MODELS; CONSTRUCTIVE FIELD THEORY; ENERGY LEVELS; EXCITED STATES; FIELD THEORIES; INTEGRALS; MATHEMATICAL LOGIC; MATHEMATICAL MODELS; MATHEMATICS; PARTICLE MODELS; QUANTUM FIELD THEORY; QUARK MODEL

Optional Information

Collaborations
ALPHA Collaboration
Secondary number(s)
MS-TP--02-2; Bicocca-FT--02-18; HU-EP--02-37; HEP-LAT--0209023