Faster method of computation of lattice quark number susceptibilities

R. V. Gavai and Sayantan Sharma
Phys. Rev. D 85, 054508 – Published 21 March 2012

Abstract

We compute the quark number susceptibilities in two flavor QCD for staggered fermions by adding the chemical potential as a Lagrange multiplier for the point-split number density term. Since a lesser number of quark propagators is required at any order, this method leads to faster computations. We propose a subtraction procedure to remove the inherent undesired lattice terms and check that it works well by comparing our results with the existing ones where the elimination of these terms is analytically guaranteed. We also show that the ratios of susceptibilities are robust, opening a door for better estimates of location of the QCD critical point through the computation of the tenth and twelfth order baryon number susceptibilities without significant additional computational overload.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 20 January 2012

DOI:https://doi.org/10.1103/PhysRevD.85.054508

© 2012 American Physical Society

Authors & Affiliations

R. V. Gavai*

  • Department of Theoretical Physics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India

Sayantan Sharma

  • Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany

  • *gavai@tifr.res.in
  • sayantan@physik.uni-bielefeld.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 5 — 1 March 2012

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×