Curvature of the pseudocritical line in QCD: Taylor expansion matches analytic continuation - INSPIRE

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Curvature of the pseudocritical line in QCD: Taylor expansion matches analytic continuation

Claudio Bonati
(
- Pisa U. and
- INFN, Pisa
)
,
Massimo D'Elia
(
- Pisa U. and
- INFN, Pisa
)
,
Francesco Negro
(
- INFN, Pisa
)
,
Francesco Sanfilippo
(
- INFN, Rome3
)
,
Kevin Zambello
(
- Parma U. and
- INFN, Parma
)

May 8, 2018

12 pages

Published in:

Phys.Rev.D 98 (2018) 5, 054510

Published: Sep 18, 2018

e-Print:

1805.02960 [hep-lat]

DOI:

10.1103/PhysRevD.98.054510

View in:

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Abstract: (APS)

We determine the curvature of the pseudocritical line of Nf=2+1 QCD with physical quark masses via Taylor expansion in the quark chemical potentials. We adopt a discretization based on stout improved staggered fermions and the tree level Symanzik gauge action; the location of the pseudocritical temperature is based on chiral symmetry restoration. Simulations are performed on lattices with different temporal extent (Nt=6, 8, 10), leading to a continuum extrapolated curvature κ=0.0145(25), which is in very good agreement with the continuum extrapolation obtained via analytic continuation and the same discretization, κ=0.0135(20). This result eliminates the possible tension emerging when comparing analytic continuation with earlier results obtained via Taylor expansion.

Note:

11 pages, 7 figures

12.38.Aw
11.15.Ha
12.38.Gc
12.38.Mh
Lattice field theories, lattice QCD
critical phenomena
potential: chemical
numerical calculations
quark: staggered
quark: flavor: 3

References(52)

Figures(16)

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