The Gross-Neveu model near the critical temperature. A mechanism for quark-hadron phase transition in relativistic ion collisions

1989 ◽  
Vol 233 (3-4) ◽  
pp. 423-428 ◽  
Author(s):  
N.G. Antoniou ◽  
A.I. Karanikas ◽  
C.G. Papadopoulos
Keyword(s):  
Phase Transition ◽  
Critical Temperature ◽  
Ion Collisions ◽  
Hadron Phase ◽  
Gross Neveu Model

scholarly journals Cluster production in quark-hadron phase transition in heavy-ion collisions

1994 ◽  
Vol 72 (6) ◽  
pp. 820-823 ◽  
Author(s):  
Rudolph C. Hwa ◽  
C. S. Lam ◽  
Jicai Pan
Keyword(s):  
Phase Transition ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Ion Collisions ◽  
Hadron Phase

A STUDY OF QUARK-HADRON PHASE TRANSITION

1995 ◽  
Vol 10 (29) ◽  
pp. 4179-4185 ◽  
Author(s):  
B. CHAKRABARTI ◽  
T.L. REMA DEVI ◽  
A. BHATTACHARYA
Keyword(s):  
Phase Transition ◽  
Critical Temperature ◽  
Landau Theory ◽  
Anomalous Behavior ◽  
Ginzburg Landau ◽  
Hadron Phase ◽  
Theory Of Superconductivity

The anomalous behavior of the thermodynamic co-ordinates along with the hadronic critical temperature (Tc) is studied and the properties of the surrounding vacuum are investigated in the framework of the Ginzburg-Landau theory of superconductivity, with interesting conclusions.

scholarly journals A study of fluctuations of voids in relativistic ion–ion collisions

2015 ◽  
Vol 24 (10) ◽  
pp. 1550074 ◽  
Author(s):  
Shakeel Ahmad ◽  
M. M. Khan ◽  
Shaista Khan ◽  
A. Khatun ◽  
M. Irfan
Keyword(s):  
Experimental Data ◽  
Phase Transition ◽  
Phase Space ◽  
Power Law ◽  
Scaling Exponent ◽  
Ion Collisions ◽  
Hadron Phase ◽  
Multi Phase ◽  
Phase Transport ◽  
Rule Out

Event-by-event (ebe) fluctuations of hadronic patterns are investigated in terms of voids by analyzing the experimental data on 4.5, 14.5 and 60 A GeV/c 16 O - AgBr collisions. The findings are compared with the predictions of a multi-phase transport AMPT model. Dependence of voids on phase space bin width is examined in terms of two lowest moments of ebe fluctuations of voids, 〈Gq〉 and Sq. The findings reveal that scaling exponent estimated from the observed power-law behavior of the voids may be used to characterize the various properties of hadronic phase transition. The results also rule out occurrence of second-order quark–hadron phase transition at the projectile energies considered.

A STUDY OF MULTIFRACTALITY AND PHASE TRANSITION IN HEAVY-ION COLLISIONS — EXPERIMENTAL DATA VERSUS MODEL SIMULATION

Fractals ◽  
2018 ◽  
Vol 26 (01) ◽  
pp. 1850015 ◽  
Author(s):  
SWARNAPRATIM BHATTACHARYYA ◽  
MARIA HAIDUC ◽  
ALINA TANIA NEAGU ◽  
ELENA FIRU
Keyword(s):  
Phase Transition ◽  
Model Simulation ◽  
Landau Theory ◽  
Factorial Moment ◽  
Heavy Ion ◽  
Experimental Results ◽  
Ginzburg Landau ◽  
Ion Collisions ◽  
Hadron Phase ◽  
Rhic Data

In this paper, we have investigated the presence of multifractality and the possibility of quark–hadron phase transition in the multiparticle production in [Formula: see text]O–AgBr, [Formula: see text]Si–AgBr and [Formula: see text]S–AgBr interactions at 4.5[Formula: see text]AGeV/[Formula: see text] in the framework of Ginzburg–Landau theory of second-order phase transition following the Takagi moment methodology. The same analysis with the factorial moment method has also been performed. Experimental results have been compared with the prediction of UrQMD and AMPT models. A comparison of experimental results with the analysis of UrQMD simulated RHIC data by the method of Takagi moment has also been presented. Comparison of experimental results with previous results of emulsion experiments has been mentioned.

Void pattern fluctuation in p-AgBr interactions at 400 GeV/c

2016 ◽  
pp. 4115-4125
Author(s):  
Argha Deb
Keyword(s):  
Experimental Data ◽  
Phase Transition ◽  
Phase Space ◽  
Second Order ◽  
Hadron Phase

The event-by-event fluctuation of hadronic patterns is investigated by finding a measure of the non-hadronic regions, the voids, for the experimental data of p-AgBr interactions at 400 GeV/c considering the anisotropy of phase space. Two moments of the event-to-event fluctuation of voids, <Gq> and Sq have been calculated as defined by R. C. Hwa and Q. H. Zhang to quantify the dependence of the voids on the bin sizes. The results suggest that no quark-hadron phase transition of second order have taken place for p-AgBr interactions at 400 GeV/c. The result have been compared with the result of VENUS generated data.

scholarly journals Cooper Pair-Like Systems at High Temperature and their Role on Fluctuations Near the Critical Temperature

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3216-3219 ◽  
Author(s):  
M. Ausloos ◽  
S. Dorbolo
Keyword(s):  
Phase Transition ◽  
Electrical Resistivity ◽  
High Temperature ◽  
Critical Temperature ◽  
Oxygen Diffusion ◽  
Cooper Pair ◽  
Anomalous Behavior ◽  
Anomalous Effect ◽  
Linear Temperature ◽  
Ybco Sample

A logarithmic behavior is hidden in the linear temperature regime of the electrical resistivity R(T) of some YBCO sample below 2T c where "pairs" break apart, fluctuations occur and "a gap is opening". An anomalous effect also occurs near 200 K in the normal state Hall coefficient. In a simulation of oxygen diffusion in planar 123 YBCO, an anomalous behavior is found in the oxygen-vacancy motion near such a temperature. We claim that the behavior of the specific heat above and near the critical temperature should be reexamined in order to show the influence and implications of fluctuations and dimensionality on the nature of the phase transition and on the true onset temperature.

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