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Journal of High Energy Physics

, 2013:175 | Cite as

Chiral condensate from the twisted mass Dirac operator spectrum

  • Krzysztof CichyEmail author
  • Elena Garcia-Ramos
  • Karl Jansen
Open Access
Article

Abstract

We present the results of our computation of the dimensionless chiral condensate r 0Σ1/3 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.

Keywords

Lattice QCD Spontaneous Symmetry Breaking 

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Copyright information

© SISSA 2013

Authors and Affiliations

  • Krzysztof Cichy
    • 1
    • 2
    Email author
  • Elena Garcia-Ramos
    • 1
    • 3
  • Karl Jansen
    • 1
    • 4
  1. 1.NIC, DESYZeuthenGermany
  2. 2.Faculty of PhysicsAdam Mickiewicz UniversityPoznanPoland
  3. 3.Humboldt Universität zu BerlinBerlinGermany
  4. 4.Department of PhysicsUniversity of CyprusNicosiaCyprus

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