Thermal QCD transition with two flavors of twisted mass fermions

被引：32

作者：

Burger, Florian ^{[1
]}

Ilgenfritz, Ernst-Michael ^{[1
,2
]}

Kirchner, Malik ^{[1
]}

Lombardo, Maria Paola ^{[3
]}

Mueller-Preussker, Michael ^{[1
]}

Philipsen, Owe ^{[4
]}

Pinke, Christopher ^{[4
]}

Urbach, Carsten ^{[5
,6
]}

Zeidlewicz, Lars ^{[4
]}

机构：

[1] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[2] VBLHEP, Joint Inst Nucl Res, Dubna 141980, Russia

[3] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-100044 Frascati, Italy

[4] Goethe Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany

[5] Univ Bonn, HISKP, D-53115 Bonn, Germany

[6] Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 07期

关键词：

CHIRAL PHASE-TRANSITION; 2-FLAVOR; TEMPERATURE; SCALE; ORDER; O(4);

D O I：

10.1103/PhysRevD.87.074508

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the thermal QCD transition with two flavors of maximally twisted mass fermions for a set of pion masses, 300 MeV < m(pi) < 500 MeV, and lattice spacings, a < 0: 09 fm. We determine the pseudocritical temperatures and discuss their extrapolation to the chiral limit using scaling forms for different universality classes, as well as the scaling form for the magnetic equation of state. For all pion masses considered, we find reasonable consistency with O(4) scaling plus leading corrections. However, a true distinction between the O(4) scenario and a first- order scenario in the chiral limit requires lighter pions than are currently in use in simulations of Wilson fermions.

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页数：10

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