New line of thermodynamic phase transitions on the x-T diagram of a dilute Heisenberg system with short-range interactions Li0.5Fe2.5−x GaxO4

JETP Letters ◽  
1998 ◽  
Vol 67 (5) ◽  
pp. 346-351 ◽  
Author(s):  
N. N. Efimova
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Thermodynamic Phase

Magnetic phase transitions, short-range correlations and spin fluctuations in (Gd1−xYx)3Co

2001 ◽  
Vol 329 (1-2) ◽  
pp. 22-30 ◽  
Author(s):  
N.V Baranov ◽  
A.A Yermakov ◽  
P.E Markin ◽  
U.M Possokhov ◽  
H Michor ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Magnetic Phase ◽  
Spin Fluctuations ◽  
Magnetic Phase Transitions ◽  
Short Range Correlations

Acceleration Algorithms in Monte Carlo Simulations in Statistical Physics

1991 ◽  
Vol 02 (01) ◽  
pp. 201-208
Author(s):  
ROBERT H. SWENDSEN
Keyword(s):  
Monte Carlo ◽  
Phase Transitions ◽  
Monte Carlo Simulations ◽  
Statistical Physics ◽  
Relaxation Times ◽  
Critical Slowing Down ◽  
Cluster Approach ◽  
New Developments ◽  
Slowing Down ◽  
Thermodynamic Phase

Monte Carlo simulations of thermodynamic phase transitions are usually hampered by long relaxation times due to the phenomenon of “critical slowing down.” Using a mapping due to Fortuin and Kasteleyn, a cluster approach to Monte Carlo simulations has been developed, which greatly reduces relaxation times, improving efficiency by up to two or three orders of magnitude. New developments and extensions of this approach are also discussed.

Implications of new phase transitions approach onto specific black holes

2020 ◽  
Vol 35 (39) ◽  
pp. 2050326
Author(s):  
Abdul Jawad ◽  
Shahid Chaudhary
Keyword(s):  
Black Holes ◽  
Phase Transitions ◽  
Critical Points ◽  
Theoretical Physics ◽  
Open Questions ◽  
Standard Relation ◽  
Classical Gravity ◽  
Quantum Interpretation ◽  
Thermodynamic Phase ◽  
New Phase

Among many open questions in theoretical physics, consistent quantum gravity theory is still a major issue to be solved. Recent major works in phase transitions of black holes (BH) can be helpful for quantum interpretation of classical gravity. We study the new effective method to discuss the thermodynamic phase transitions onto well renowned regular BHs. Ordinary approaches of phase transitions depend upon equation of state and it is impossible to obtain all critical points with ordinary approaches. This study is derived from the slope of temperature versus entropy and it provides the possibility of finding all the critical points analytically. This technique provides pressure, which is different from standard relation of pressure and independent of other thermodynamical relations. We discuss some issues in ordinary methods and provide an easy approach to investigate the critical behavior of thermodynamical quantities. We find out the phase transitions points and horizon radii of non-physical range for BHs. We also use the new thermodynamical relations to briefly study well-known Joule–Thomson (JT) effect on regular BH.

Shear-induced structural and thermodynamic phase transitions in micellar systems

2017 ◽  
Vol 40 (2) ◽  
Author(s):  
Angelina Martín del Campo ◽  
J. Paulo García-Sandoval ◽  
J. F. Armando Soltero ◽  
Fernando Bautista ◽  
Octavio Manero ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Micellar Systems ◽  
Thermodynamic Phase

OBSERVATION OF PHASE TRANSITIONS AT THE (100) SURFACE OF Al-3 at.% Ag

1995 ◽  
Vol 02 (02) ◽  
pp. 141-145 ◽  
Author(s):  
E. WETLI ◽  
M. HOCHSTRASSER ◽  
D. PESCIA ◽  
M. ERBUDAK
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Photoelectron Spectroscopy ◽  
Short Range ◽  
Short Range Order ◽  
Elevated Temperatures ◽  
X Ray ◽  
First Order ◽  
First Order Phase Transition ◽  
First Order Phase

In the bulk binary alloy Al-3 at.% Ag , Ag 2 Al precipitates are formed below 410°C which are reversibly dissolved at elevated temperatures. We have followed this phase transition at a (100) surface as a function of temperature by monitoring the bandwidth of the Ag 4d states in X-ray photoelectron spectroscopy. Since the bandwidth measures the coordination number of the emitting atoms, it directly reveals the short-range order of the Ag atoms at the surface. The measurements show that the dissolution of the Ag -rich clusters starts at temperatures at least 100 K below the bulk transition, and the observed hysteresis behavior is indicative of a first-order phase transition at the surface.

Topology and Phase Transitions: The Case of the Short Range Spherical Model

2006 ◽  
Vol 124 (5) ◽  
pp. 1231-1253 ◽  
Author(s):  
Sebastián Risau-Gusman ◽  
Ana C. Ribeiro-Teixeira ◽  
Daniel A. Stariolo
Keyword(s):  
Phase Transitions ◽  
Short Range ◽  
Spherical Model
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