scholarly journals Critical-point scaling function for the specific heat of a Ginzburg-Landau superconductor

2001 ◽  
Vol 64 (18) ◽  
Author(s):  
Dominic J. Lee ◽  
Ian D. Lawrie
Keyword(s):  
Specific Heat ◽  
Critical Point ◽  
Scaling Function ◽  
Ginzburg Landau

A Rational Equation of State for Water and Water Vapor in the Critical Region

1964 ◽  
Vol 86 (3) ◽  
pp. 320-326 ◽  
Author(s):  
E. S. Nowak
Keyword(s):  
Water Vapor ◽  
Equation Of State ◽  
Thermodynamic Properties ◽  
Specific Heat ◽  
Critical Point ◽  
Critical Region ◽  
Constant Pressure ◽  
Parametric Equation ◽  
Enthalpy And Entropy ◽  
Specific Volumes

A parametric equation of state was derived for water and water vapor in the critical region from experimental P-V-T data. It is valid in that part of the critical region encompassed by pressures from 3000 to 4000 psia, specific volumes from 0.0400 to 0.1100 ft3/lb, and temperatures from 698 to 752 deg F. The equation of state satisfies all of the known conditions at the critical point. It also satisfies the conditions along certain of the boundaries which probably separate “supercritical liquid” from “supercritical vapor.” The equation of state, though quite simple in form, is probably superior to any equation heretofore derived for water and water vapor in the critical region. Specifically, the deviations between the measured and computed values of pressure in the large majority of the cases were within three parts in one thousand. This coincides approximately with the overall uncertainty in P-V-T measurements. In view of these factors, the author recommends that the equation be used to derive values for such thermodynamic properties as specific heat at constant pressure, enthalpy, and entropy in the critical region.

scholarly journals Tachyons and Solitons in Spontaneous Symmetry Breaking in the Frame of Field Theory

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1358
Author(s):  
Yiannis Contoyiannis ◽  
Michael P. Hanias ◽  
Pericles Papadopoulos ◽  
Stavros G. Stavrinides ◽  
Myron Kampitakis ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
Critical Point ◽  
Universality Class ◽  
Lattice Simulation ◽  
Ginzburg Landau ◽  
Spin Lattice ◽  
Nuclear Collisions ◽  
Ising Spin ◽  
Relativistic Nuclear Collisions

This paper presents our study of the presence of the unstable critical point in spontaneous symmetry breaking (SSB) in the framework of Ginzburg–Landau (G-L) free energy. Through a 3D Ising spin lattice simulation, we found a zone of hysteresis where the unstable critical point continued to exist, despite the system having entered the broken symmetry phase. Within the hysteresis zone, the presence of the kink–antikink SSB solitons expands and, therefore, these can be observed. In scalar field theories, such as Higgs fields, the mass of this soliton inside the hysteresis zone could behave as a tachyon mass, namely as an imaginary quantity. Due to the fact that groups Ζ(2) and SU(2) belong to the same universality class, one expects that, in future experiments of ultra-relativistic nuclear collisions, in addition to the expected bosons condensations, structures of tachyon fields could appear.

Study of the Specific-Heat Singularity ofHe3near Its Critical Point

1972 ◽  
Vol 6 (1) ◽  
pp. 364-377 ◽  
Author(s):  
G. Raymond Brown ◽  
Horst Meyer
Keyword(s):  
Specific Heat ◽  
Critical Point

Superfluid transition in a cylindrical pore: Specific-heat scaling function

1999 ◽  
Vol 60 (2) ◽  
pp. R746-R748 ◽  
Author(s):  
Saugata Bhattacharyya ◽  
J. K. Bhattacharjee
Keyword(s):  
Specific Heat ◽  
Scaling Function ◽  
Superfluid Transition ◽  
Cylindrical Pore

scholarly journals UPt3: Specific heat, critical fields, and the Ginzburg-Landau models for the superconducting phase diagram

1993 ◽  
Vol 48 (9) ◽  
pp. 6385-6399 ◽  
Author(s):  
T. Vorenkamp ◽  
A. de Visser ◽  
R. Wester ◽  
A. A. Menovsky ◽  
J. J. M. Franse ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Specific Heat ◽  
Superconducting Phase ◽  
Critical Fields ◽  
Ginzburg Landau

scholarly journals Scaling function for the critical specific heat in a confined geometry: Spherical limit

1999 ◽  
Vol 59 (5) ◽  
pp. 3341-3344 ◽  
Author(s):  
Saugata Bhattacharyya ◽  
J. Bhattacharjee
Keyword(s):  
Specific Heat ◽  
Scaling Function ◽  
Confined Geometry ◽  
Spherical Limit

scholarly journals Specific heat jump of two-band superconductor KFe2As2 using Ginzburg-Landau theory

2014 ◽  
Vol 32 (3) ◽  
pp. 465-469 ◽  
Author(s):  
I. Askerzade
Keyword(s):  
Specific Heat ◽  
Order Parameter ◽  
Landau Theory ◽  
Energy Functional ◽  
Order Parameters ◽  
Ginzburg Landau ◽  
Specific Heat Jump ◽  
Nonlinear Temperature Dependence ◽  
Nonlinear Temperature ◽  
Good Agreement

AbstractIn this study specific heat jump using two-gap Ginzburg-Landau (GL) theory has been calculated. In contrast to the previous approaches, we have taken into account intergradient order parameters interaction in the GL free energy functional. The thermodynamic magnetic field revealed nonlinear temperature dependence due to interband interaction between order parameters and their gradients. The calculations showed that the specific heat jump in two-order parameter superconductors was smaller than that of single-order parameter superconductors. It has been shown that such a model is in good agreement with experimental data for KFe2As2 superconductors.

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