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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 543302.0, MPI für Physik / MPI für Physik
Low-energy couplings of QCD from topological zero-mode wave functions
Authors:Giusti, L.; Hernandez, P.; Laine, M.; Weisz, P.; Wittig, H.
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Journal of High Energy Physics
Journal Abbrev.:JHEP
Issue / Number:0401
Start Page:003
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:By matching 1/m^2 divergences in finite-volume two-point correlation functions of the scalar or pseudoscalar densities with those obtained in chiral perturbation theory, we derive a relation between the Dirac operator zero-mode eigenfunctions at fixed non-trivial topology and the low-energy constants of QCD. We investigate the feasibility of using this relation to extract the pion decay constant, by computing the zero-mode correlation functions on the lattice in the quenched approximation and comparing them with the corresponding expressions in quenched chiral perturbation theory.
Classification / Thesaurus:Field Theory
Comment of the Author/Creator:31 pages. v2: references and a small clarification added; published version
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2003-129
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/hep-lat/0312012
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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