Chiral condensate from the twisted mass Dirac operator spectrum

A bstract We present the results of our computation of the dimensionless chiral condensate r 0 Σ 1/3 with N f = 2 and N f = 2 + 1 + 1 flavours of maximally twisted mass fermions. The condensate is determined from the Dirac operator spectrum, applying the spectral projector method proposed by Giusti...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2013; no. 10; pp. 1 - 25
Main Authors Cichy, Krzysztof, Garcia-Ramos, Elena, Jansen, Karl
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2013
Springer Nature B.V
Subjects
Classical and Quantum Gravitation
Condensates
Continuums
Elementary Particles
Extrapolation
Fermions
Flavor (particle physics)
Flavours
High energy physics
Operators
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Relativity Theory
String Theory
Lattice QCD
Spontaneous Symmetry Breaking
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Summary:A bstract We present the results of our computation of the dimensionless chiral condensate r 0 Σ 1/3 with N f = 2 and N f = 2 + 1 + 1 flavours of maximally twisted mass fermions. The condensate is determined from the Dirac operator spectrum, applying the spectral projector method proposed by Giusti and Lüscher. We use 3 lattice spacings and several quark masses at each lattice spacing to perform the chiral and continuum extrapolations. We study the effect of the dynamical strange and charm quarks by comparing our results for N f = 2 and N f = 2 + 1 + 1 dynamical flavours.
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2013)175