scholarly journals Nature of the phase transition for finite temperature Nf=3 QCD with nonperturbatively O(a) improved Wilson fermions at Nt=12

2020 ◽  
Vol 101 (5) ◽  
Author(s):  
Yoshinobu Kuramashi ◽  
Yoshifumi Nakamura ◽  
Hiroshi Ohno ◽  
Shinji Takeda
Keyword(s):  
Phase Transition ◽  
Finite Temperature ◽  
Wilson Fermions

scholarly journals Probing the finite temperature phase transition withNf=2nonperturbatively improved Wilson fermions

2010 ◽  
Vol 82 (1) ◽  
Author(s):  
V. G. Bornyakov ◽  
R. Horsley ◽  
S. M. Morozov ◽  
Y. Nakamura ◽  
M. I. Polikarpov ◽  
...  
Keyword(s):  
Phase Transition ◽  
Finite Temperature ◽  
Temperature Phase ◽  
Temperature Phase Transition ◽  
Wilson Fermions

scholarly journals Finite temperature phase transition in lattice QCD with Nf = 2 nonperturbatively improved Wilson fermions at Nt = 8

2003 ◽  
Vol 721 ◽  
pp. C930-C933 ◽  
Author(s):  
Y. Mori ◽  
V. Bornyakov ◽  
M. Chernodub ◽  
Y. Koma ◽  
Y. Nakamura ◽  
...  
Keyword(s):  
Phase Transition ◽  
Lattice Qcd ◽  
Finite Temperature ◽  
Temperature Phase ◽  
Temperature Phase Transition ◽  
Wilson Fermions

scholarly journals Critical point phase transition for finite temperature 3-flavor QCD with nonperturbatively O(a) improved Wilson fermions at Nt=10

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Xiao-Yong Jin ◽  
Yoshinobu Kuramashi ◽  
Yoshifumi Nakamura ◽  
Shinji Takeda ◽  
Akira Ukawa
Keyword(s):  
Phase Transition ◽  
Critical Point ◽  
Finite Temperature ◽  
Wilson Fermions

Ring-diagram summations in the finite-temperature effective potential

1993 ◽  
Vol 71 (5-6) ◽  
pp. 227-236 ◽  
Author(s):  
M. E. Carrington
Keyword(s):  
Phase Transition ◽  
Standard Model ◽  
Effective Potential ◽  
Finite Temperature ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Ring Diagram ◽  
First Order Phase Transition ◽  
The Standard Model ◽  
The One

There has been much recent interest in the finite-temperature effective potential of the standard model in the context of the electroweak phase transition. We review the calculation of the effective potential with particular emphasis on the validity of the expansions that are used. The presence of a term that is cubic in the Higgs condensate in the one-loop effective potential appears to indicate a first-order electroweak phase transition. However, in the high-temperature regime, the infrared singularities inherent in massless models produce cubic terms that are of the same order in the coupling. In this paper, we discuss the inclusion of an infinite set of these terms via the ring-diagram summation, and show that the standard model has a first-order phase transition in the weak coupling expansion.

A NUCLEAR MANY-BODY THEORY AT FINITE TEMPERATURE APPLIED TO A PROTONEUTRON STAR

2002 ◽  
Vol 11 (02) ◽  
pp. 83-104 ◽  
Author(s):  
GUILHERME F. MARRANGHELLO ◽  
CESAR A. Z. VASCONCELLOS ◽  
MANFRED DILLIG ◽  
J. A. DE FREITAS PACHECO
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Finite Temperature ◽  
Degrees Of Freedom ◽  
Many Body ◽  
Many Body Theory ◽  
The Masses ◽  
Protoneutron Stars ◽  
Protoneutron Star

Thermodynamical properties of nuclear matter are studied in the framework of an effective many-body field theory at finite temperature, considering the Sommerfeld approximation. We perform the calculations by using the nonlinear Boguta and Bodmer model, extended by the inclusion of the fundamental baryon octet and leptonic degrees of freedom. Trapped neutrinos are also included in order to describe protoneutron star properties through the integration of the Tolman–Oppenheimer–Volkoff equations, from which we obtain, beyond the standard relations for the masses and radii of protoneutron stars as functions of the central density, new results of these quantities as functions of temperature. Our predictions include: the determination of an absolute value for the limiting mass of protoneutron stars; new structural aspects on the nuclear matter phase transition via the behavior of the specific heat and, through the inclusion of quark degrees of freedom, the properties of a hadron-quark phase transition and hybrid protoneutron stars

Studies on proper time regularization and the QCD chiral phase transition

2019 ◽  
Vol 34 (01) ◽  
pp. 1950003
Author(s):  
Yu-Qiang Cui ◽  
Zhong-Liang Pan
Keyword(s):  
Phase Transition ◽  
Small Parameter ◽  
Effective Mass ◽  
Finite Temperature ◽  
Chemical Potential ◽  
Proper Time ◽  
Chiral Phase ◽  
Chiral Phase Transition ◽  
Njl Model ◽  
The Difference

We investigate the finite-temperature and zero quark chemical potential QCD chiral phase transition of strongly interacting matter within the two-flavor Nambu–Jona-Lasinio (NJL) model as well as the proper time regularization. We use two different regularization processes, as discussed in Refs. 36 and 37, separately, to discuss how the effective mass M varies with the temperature T. Based on the calculation, we find that the M of both regularization schemes decreases when T increases. However, for three different parameter sets, quite different behaviors will show up. The results obtained by the method in Ref. 36 are very close to each other, but those in Ref. 37 are getting farther and farther from each other. This means that although the method in Ref. 37 seems physically more reasonable, it loses the advantage in Ref. 36 of a small parameter dependence. In addition, we also, find that two regularization schemes provide similar results when T [Formula: see text] 100 MeV, while when T is larger than 100 MeV, the difference becomes obvious: the M calculated by the method in Ref. 36 decreases more rapidly than that in Ref. 37.

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