scholarly journals Fluctuation effects in metastable states near first-order phase transitions

2016 ◽  
Vol 30 (21) ◽  
pp. 1650149
Author(s):  
Dimo I. Uzunov
Keyword(s):  
Free Energy ◽  
Perturbation Theory ◽  
Phase Transitions ◽  
Internal Energy ◽  
Order Parameter ◽  
First Order ◽  
Pressure Concentration ◽  
Fluctuation Effects ◽  
First Order Phase ◽  
Temperature Factors

Fluctuation effects at first-order phase transitions driven by changes of other-than-temperature factors like pressure, concentration or external fields are investigated by perturbation theory. The results for the fluctuation contributions to the order parameter, the internal energy and the free energy at pre-transitional states near spinodal points of first-order phase transitions are presented to the first-nonvanishing order of the expansion parameters of the theory.

SEARCH FOR THE TRANSITION POINT AND DEDUCTION OF THE ORDER OF PHASE TRANSITIONS—APPLICATION OF THE MICROCANONICAL SIMULATION METHOD WITH FRICTION TERMS

1990 ◽  
Vol 05 (03) ◽  
pp. 515-530
Author(s):  
YOSHITOMI MORIKAWA
Keyword(s):  
Phase Transitions ◽  
Internal Energy ◽  
Transition Point ◽  
Simulation Method ◽  
Energy Change ◽  
Gauge Model ◽  
First Order ◽  
First Order Phase

We apply the microcanonical simulation method with friction terms to deduce the order of phase transitions by examining the existence of the S-shaped curve in the internal energy-temperature diagram. We study the dependence of the S-shape on a parameter of energy change by using a gauge model, and determine the location of the transition point. We further consider the possibility of finding out weak first-order phase transitions. We also explain several features in the method and remark a condition on the parameter for a reasonable simulation.

Cusp points in surface free energy: Faceting and first-order phase transitions

Physica B+C ◽  
1984 ◽  
Vol 124 (2) ◽  
pp. 251-254 ◽  
Author(s):  
Nicolás García ◽  
Juan José Sáenz ◽  
Nicolás Cabrera
Keyword(s):  
Free Energy ◽  
Phase Transitions ◽  
Surface Free Energy ◽  
First Order ◽  
Cusp Points ◽  
First Order Phase

FIRST ORDER PHASE TRANSITIONS AND PHASE DIAGRAMS OF SYSTEMS WITH A TWO-COMPONENT ORDER PARAMETER

1994 ◽  
Vol 08 (24) ◽  
pp. 1493-1502
Author(s):  
EVGENIA J. BLAGOEVA
Keyword(s):  
Phase Transitions ◽  
Order Parameter ◽  
Mean Field ◽  
Internal Symmetry ◽  
Field Analysis ◽  
First Order ◽  
Specific Effects ◽  
Expansion Coefficients ◽  
First Order Phase ◽  
Component Order

A complete mean field analysis of the sixth order Landau free energy for a two-dimensional order parameter is presented. Special attention is paid to its application to first order phase transitions. The phase diagram for all the allowed values of the expansion coefficients is constructed and the specific effects arising from the internal symmetry of the order parameter are emphasized.

scholarly journals Phase Transitions of GUP-Corrected Charged AdS Black Hole

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Meng-Sen Ma ◽  
Yan-Song Liu
Keyword(s):  
Black Hole ◽  
Free Energy ◽  
Phase Transitions ◽  
Equation Of State ◽  
Thermodynamic Properties ◽  
Critical Points ◽  
Generalized Uncertainty Principle ◽  
First Order ◽  
First Order Phase ◽  
Horizon Case

We study the thermodynamic properties and critical behaviors of the topological charged black hole in AdS space under the consideration of the generalized uncertainty principle (GUP). It is found that only in the spherical horizon case there are Van der Waals-like first-order phase transitions and reentrant phase transitions. From the equation of state we find that the GUP-corrected black hole can have one, two, and three apparent critical points under different conditions. However, it is verified by the Gibbs free energy that in either case there is at most one physical critical point.

Perturbation theory in the kinetics of first-order phase transitions

1997 ◽  
Vol 107 (8) ◽  
pp. 3247-3252 ◽  
Author(s):  
Sergey A. Kukushkin ◽  
Andrew V. Osipov
Keyword(s):  
Perturbation Theory ◽  
Phase Transitions ◽  
First Order ◽  
First Order Phase ◽  
Kinetics Of
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