# Low-energy couplings of QCD from topological zero-mode wave functions

Giusti L, Hernandez P, Laine M, Weisz P, Wittig H (2004)
JOURNAL OF HIGH ENERGY PHYSICS 2004(01).

Journal Article | Published | English

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Abstract
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.
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Giusti L, Hernandez P, Laine M, Weisz P, Wittig H. Low-energy couplings of QCD from topological zero-mode wave functions. JOURNAL OF HIGH ENERGY PHYSICS. 2004;2004(01).
Giusti, L., Hernandez, P., Laine, M., Weisz, P., & Wittig, H. (2004). Low-energy couplings of QCD from topological zero-mode wave functions. JOURNAL OF HIGH ENERGY PHYSICS, 2004(01).
Giusti, L., Hernandez, P., Laine, M., Weisz, P., and Wittig, H. (2004). Low-energy couplings of QCD from topological zero-mode wave functions. JOURNAL OF HIGH ENERGY PHYSICS 2004.
Giusti, L., et al., 2004. Low-energy couplings of QCD from topological zero-mode wave functions. JOURNAL OF HIGH ENERGY PHYSICS, 2004(01).
L. Giusti, et al., “Low-energy couplings of QCD from topological zero-mode wave functions”, JOURNAL OF HIGH ENERGY PHYSICS, vol. 2004, 2004.
Giusti, L., Hernandez, P., Laine, M., Weisz, P., Wittig, H.: Low-energy couplings of QCD from topological zero-mode wave functions. JOURNAL OF HIGH ENERGY PHYSICS. 2004, (2004).
Giusti, L, Hernandez, P, Laine, Mikko, Weisz, P, and Wittig, H. “Low-energy couplings of QCD from topological zero-mode wave functions”. JOURNAL OF HIGH ENERGY PHYSICS 2004.01 (2004).
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arXiv hep-lat/0312012

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