Hadronic Screening in Improved Taste

Abstract

We present our results on meson and nucleon screening masses in finite temperature two flavour QCD using smeared staggered valence quarks and staggered thin-link sea quarks with different lattice spacings and quark masses. We investigate optimization of smearing by observing its effects on the infrared (IR) and ultraviolet (UV) components of gluon and quark fields. The application of smearing to screening at finite temperature also provides a transparent window into the mechanism of the interplay of smearing and chiral symmetry. The improved hadronic operators show that above the finite temperature cross over, T_c, screening masses are consistent with weak-coupling predictions. There is also evidence for a rapid opening up of a spectral gap of the Dirac operator immediately above T_c.

14 pages, 12 figures

References in corpus (10)

• The QCD transition temperature: results with physical masses in the continuum limit
• QCD at finite chemical potential with six time slices
• Meson screening masses from lattice QCD with two light and the strange quark
• Rationale for UV-filtered clover fermions
• Nucleons near the QCD deconfinement transition
• Eigenvalues and Eigenvectors of the Staggered Dirac Operator at Finite Temperature
• Meson Screening Masses in the Interacting QCD Plasma
• Taste symmetry breaking with HYP-smeared staggered fermions
• Quasi-static probes of the QCD plasma
• Taste symmetry breaking at finite temperature

Cited by in corpus (6)

• Meson Screening Masses in (2+1)-Flavor QCD
• The equation of state of QCD at finite chemical potential
• Quark distribution inside a pion in many-flavor (2 + 1)-dimensional QCD using lattice computations: UV listens to IR
• Real time warm pions from the lattice using an effective theory
• Wilson flow with naive staggered quarks
• Baryonic thermal screening mass at NLO