Scalar condensate and light quark masses from overlap fermions

Hernández, Pilar, Jansen, Karl, Lellouch, Laurent and Wittig, Hartmut (2002) Scalar condensate and light quark masses from overlap fermions. Nuclear Physics B - Proceedings Supplements, 106-10. pp. 766-771. ISSN 0920-5632

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Abstract

We have studied pseudoscalar correlation functions computed using the overlap operator. Within the accuracy of our calculation we find that the quark mass dependence agrees with the prediction of lowest-order Chiral Perturbation Theory χPT for quark masses in the range of m ∼ ms/2 – 2ms. We present the results of an analysis which assumes lowest-order χPT to be valid to extract the low-energy constants Σ and fP, as well as the strange quark mass. Non-perturbative renormalization is implemented via a matching procedure with data obtained using Wilson fermions in the Schrödinger functional set-up. We find that the scalar condensate computed here agrees with the one obtained previously through a finite-size scaling analysis.

Item Type:	Article
Additional Information:	LTH525. arXiv Number: arXiv:hep-lat/0110199v1. Available online 28 May 2002. Issue: March 2002.
Uncontrolled Keywords:	QUENCHED LATTICE QCD, PERTURBATION-THEORY, PRECISION COMPUTATION, RENORMALIZATION
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	15 Jul 2009 10:38
Last Modified:	24 May 2025 04:12
DOI:	10.1016/s0920-5632(01)01838-2
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/560