scholarly journals Antiferromagnetic spin phase transition in nuclear matter with effective Gogny interaction

2004 ◽  
Vol 70 (6) ◽  
Author(s):  
A. A. Isayev ◽  
J. Yang
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Antiferromagnetic Spin

A NUCLEAR MANY-BODY THEORY AT FINITE TEMPERATURE APPLIED TO A PROTONEUTRON STAR

2002 ◽  
Vol 11 (02) ◽  
pp. 83-104 ◽  
Author(s):  
GUILHERME F. MARRANGHELLO ◽  
CESAR A. Z. VASCONCELLOS ◽  
MANFRED DILLIG ◽  
J. A. DE FREITAS PACHECO
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Finite Temperature ◽  
Degrees Of Freedom ◽  
Many Body ◽  
Many Body Theory ◽  
The Masses ◽  
Protoneutron Stars ◽  
Protoneutron Star

Thermodynamical properties of nuclear matter are studied in the framework of an effective many-body field theory at finite temperature, considering the Sommerfeld approximation. We perform the calculations by using the nonlinear Boguta and Bodmer model, extended by the inclusion of the fundamental baryon octet and leptonic degrees of freedom. Trapped neutrinos are also included in order to describe protoneutron star properties through the integration of the Tolman–Oppenheimer–Volkoff equations, from which we obtain, beyond the standard relations for the masses and radii of protoneutron stars as functions of the central density, new results of these quantities as functions of temperature. Our predictions include: the determination of an absolute value for the limiting mass of protoneutron stars; new structural aspects on the nuclear matter phase transition via the behavior of the specific heat and, through the inclusion of quark degrees of freedom, the properties of a hadron-quark phase transition and hybrid protoneutron stars

THE SIMULATION OF 2D SPIN-1 ISING MODEL WITH POSITIVE BIQUADRATIC INTERACTION ON A CELLULAR AUTOMATON

2003 ◽  
Vol 14 (10) ◽  
pp. 1305-1320 ◽  
Author(s):  
BÜLENT KUTLU
Keyword(s):  
Phase Transition ◽  
Ising Model ◽  
Cellular Automaton ◽  
Intermediate Phase ◽  
Finite Size ◽  
Square Lattice ◽  
Two Dimensional ◽  
Finite Size Scaling ◽  
Creutz Cellular Automaton ◽  
Antiferromagnetic Spin

The two-dimensional antiferromagnetic spin-1 Ising model with positive biquadratic interaction is simulated on a cellular automaton which based on the Creutz cellular automaton for square lattice. Phase diagrams characterizing phase transition of the model are presented for a comparison with those obtained from other calculations. We confirm the existence of the intermediate phase observed in previous works for some values of J/K and D/K. The values of the static critical exponents (β, γ and ν) are estimated within the framework of the finite-size scaling theory for D/K<2J/K. Although the results are compatible with the universal Ising critical behavior in the region of D/K<2J/K-4, the model does not exhibit any universal behavior in the interval 2J/K-4<D/K<2J/K.

scholarly journals Publisher Correction: Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo2V2O8

2018 ◽  
Vol 14 (8) ◽  
pp. 867-867 ◽  
Author(s):  
Quentin Faure ◽  
Shintaro Takayoshi ◽  
Sylvain Petit ◽  
Virginie Simonet ◽  
Stéphane Raymond ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Spin Chain ◽  
Quantum Phase ◽  
Topological Quantum ◽  
Antiferromagnetic Spin

scholarly journals Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCo2V2O8

2018 ◽  
Vol 14 (7) ◽  
pp. 716-722 ◽  
Author(s):  
Quentin Faure ◽  
Shintaro Takayoshi ◽  
Sylvain Petit ◽  
Virginie Simonet ◽  
Stéphane Raymond ◽  
...  
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Spin Chain ◽  
Quantum Phase ◽  
Topological Quantum ◽  
Antiferromagnetic Spin
Sign in / Sign up

Export Citation Format

Share Document