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QCD phase diagram for finite imaginary chemical potential with HISQ fermions

Nov 6, 2018

7 pages

Part of Proceedings, 36th International Symposium on Lattice Field Theory (Lattice 2018) : East Lansing, MI, United States, July 22-28, 2018, 162

Published in:

PoS LATTICE2018 (2018) 162

Contribution to:

- Lattice 2018
, 162

Published: Nov 30, 2018 by SISSA

e-Print:

1811.02494 [hep-lat]

DOI:

10.22323/1.334.0162

View in:

ADS Abstract Service

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Abstract: (SISSA)

We present results from an ongoing study of the phase diagram of (2+1)-flavor QCD using the HISQ action with smaller than physical light quark masses in the Roberge-Weiss (RW) plane on lattices with temporal extent

N_\tau=4

. We find that the endpoint of the

1^{st}

order RW transition line remains

2^{nd}

order at least down to light quark masses corresponding to Goldstone pion masses of

55

~MeV. Furthermore, we show that the chiral condensate is sensitive to the RW transition and may serve as a energy-like operator characterizing universal behavior close to the RW endpoint.

Note:

7pages, 11 figures, Prepared for the proceedings of LATTICE2018, held at Michigan State University, East Lansing, Michigan, USA

quark: mass dependence
quantum chromodynamics: critical phenomena
lattice field theory
numerical calculations
quark: staggered
quark: flavor: 3
condensation: chiral
Goldstone particle
potential: chemical
lattice

References(12)

Figures(9)

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