Bag constant and deconfinement phase transition in a nontopological soliton model

1992 ◽  
Vol 46 (7) ◽  
pp. 3211-3214 ◽  
Author(s):  
Gao Song ◽  
Wang Enke ◽  
Li Jiarong
Keyword(s):  
Phase Transition ◽  
Soliton Model ◽  
Deconfinement Phase Transition ◽  
Bag Constant ◽  
Nontopological Soliton

scholarly journals Gluodynamics and deconfinement phase transition under rotation from holography

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Xun Chen ◽  
Lin Zhang ◽  
Danning Li ◽  
Defu Hou ◽  
Mei Huang
Keyword(s):  
Phase Transition ◽  
Angular Velocity ◽  
Chemical Potential ◽  
Entropy Density ◽  
Thermodynamic Quantities ◽  
Strongly Coupled ◽  
Trace Anomaly ◽  
Holographic Qcd ◽  
Deconfinement Phase Transition ◽  
Small Chemical

Abstract We investigate rotating effect on deconfinement phase transition in an Einstein-Maxwell-Dilaton (EMD) model in bottom-up holographic QCD approach. By constructing a rotating black hole, which is supposed to be dual to rotating strongly coupled nuclear matter, we investigate the thermodynamic quantities, including entropy density, pressure, energy density, trace anomaly, sound speed and specific heat for both pure gluon system and two-flavor system under rotation. It is shown that those thermodynamic quantities would be enhanced by large angular velocity. Also, we extract the information of phase transition from those thermodynamic quantities, as well as the order parameter of deconfinement phase transition, i.e. the loop operators. It is shown that, in the T − ω plane, for two-flavor case with small chemical potential, the phase transition is always crossover. The transition temperature decreases slowly with angular velocity and chemical potential. For pure gluon system with zero chemical potential, the phase transition is always first order, while at finite chemical potential a critical end point (CEP) will present in the T − ω plane.

scholarly journals Entanglement entropy of AdS5 × S5 with massive flavors

2018 ◽  
Vol 33 (03) ◽  
pp. 1850008
Author(s):  
Sen Hu ◽  
Guozhen Wu
Keyword(s):  
Phase Transition ◽  
Line Segment ◽  
Entanglement Entropy ◽  
Point Of View ◽  
Nucl Phys ◽  
Zero Temperature ◽  
Holographic Entanglement Entropy ◽  
Deconfinement Phase Transition

We consider backreacted [Formula: see text] coupled with [Formula: see text] massive flavors introduced by D7 branes. The backreacted geometry is in the Veneziano limit with fixed [Formula: see text]. By dividing one of the directions into a line segment with length l, we get two subspaces. Then we calculate the entanglement entropy between them. With the method of [I. R. Klebanov, D. Kutasov and A. Murugan, Nucl. Phys. B 796, 274 (2008)], we are able to find the cut-off independent part of the entanglement entropy and finally find that this geometry shows no confinement/deconfinement phase transition at zero temperature from the holographic entanglement entropy point of view similar to the case in pure [Formula: see text].

QUARK MATTER NUCLEATION IN NEUTRON STARS

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1491-1498 ◽  
Author(s):  
I. BOMBACI
Keyword(s):  
Phase Transition ◽  
Critical Mass ◽  
Threshold Value ◽  
Hadronic Matter ◽  
First Order Phase Transition ◽  
Nucleation Mechanisms ◽  
Deconfinement Phase Transition ◽  
Quark Deconfinement ◽  
Evolutionary Paths ◽  
First Order Phase

We study the quark deconfinement phase transition in cold (T = 0) and hot β-stable hadronic matter. Assuming a first-order phase transition, we calculate and compare the nucleation rate and the nucleation time due to thermal and quantum nucleation mechanisms. We show that above a threshold value of the central pressure a pure hadronic star (HS) is metastable to the conversion to a quark star (QS) (i.e. hybrid star or strange star). We introduce the concept of critical mass M cr for cold HSs and proto-hadronic stars, and the concept of limiting conversion temperature for proto-hadronic stars. We show that proto-hadronic stars with a mass M < M cr could survive the early stages of their evolution without decaying to QSs. Finally, we discuss the possible evolutionary paths of proto-hadronic stars.

scholarly journals New higher order cumulants for the colorless QCD-deconfinement phase transition

2018 ◽  
Author(s):  
Hind S. A. Al-Hisoni ◽  
Zainab Z. M. Alfull ◽  
Madjid L. H. Ladrem ◽  
Leila A. Almajarshi
Keyword(s):  
Phase Transition ◽  
Higher Order ◽  
Higher Order Cumulants ◽  
Deconfinement Phase Transition

Toroidal halos in a nontopological soliton model of dark matter

2007 ◽  
Vol 75 (4) ◽  
Author(s):  
Eckehard W. Mielke ◽  
José A. Vélez Pérez
Keyword(s):  
Dark Matter ◽  
Soliton Model ◽  
Nontopological Soliton
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