Random transverse single-ion anisotropies in the mixed spin-1 and spin-1/2 Blume–Capel quantum model: Mean-field theory calculations

Pramana ◽  
2022 ◽  
Vol 96 (1) ◽  
Author(s):  
G Seto ◽  
R A A Yessoufou ◽  
A Kpadonou ◽  
E Albayrak
Keyword(s):  
Field Theory ◽  
Mean Field Theory ◽  
Mean Field ◽  
Quantum Model ◽  
Mixed Spin

scholarly journals Bistability of Feshbach resonance in optical cavity

Open Physics ◽  
2014 ◽  
Vol 12 (6) ◽  
Author(s):  
Xiao-Qiang Xu ◽  
You-Quan Li
Keyword(s):  
Field Theory ◽  
Fixed Point ◽  
Feshbach Resonance ◽  
Optical Cavity ◽  
Mean Field Theory ◽  
Mean Field ◽  
Quantum Model ◽  
Photon Interaction ◽  
Atoms And Molecules ◽  
Pump Cavity

AbstractWe consider Feshbach resonance in an optical cavity where photons interact with atoms and molecules dispersively. From mean-field theory we obtain multiple fixed-point solutions, which is strongly related to the phenomenon of bistability. Adiabatic evolutions demonstrate hysteretic behaviors by varying pump-cavity detuning from opposite directions. We also use the quantum model to check mean-field results which match perfectly. The analysis here may enrich the study of particle-photon interaction systems.

scholarly journals Reentrance Phenomenon of a Mixed Spin Ising Model

2015 ◽  
Vol 56 ◽  
pp. 31-36
Author(s):  
Hadey K. Mohamad
Keyword(s):  
Field Theory ◽  
Phase Transition ◽  
Magnetic Phase ◽  
Mean Field Theory ◽  
Mean Field ◽  
Lattice Disorder ◽  
Cubic Lattice ◽  
Mixed Spin ◽  
Simple Cubic ◽  
Simple Cubic Lattice

A reentrant magnetic phase transition in molecular based magnet AFeIIFeIII(C2O4)3[A=N(n-CnH2n+1)4, n=3-5] is investigated by the use of Mean-Field Theory (MFT) for a mixed spin-2 and spin-5/2 Ising system on a simple cubic lattice. It is found that a double-entrant ferrimagnetic behaviour in the mixed-spin system depends on the negative values of the anisotropies in the order-disorder system for the two sublattices of the mixture. It is shown using numerical calculations that this phenomenon is strongly affected by the magnetic anisotropy and lattice disorder.

Mean field theory of n-layer unbinding

1993 ◽  
Vol 3 (3) ◽  
pp. 385-393 ◽  
Author(s):  
W. Helfrich
Keyword(s):  
Field Theory ◽  
Mean Field Theory ◽  
Mean Field

scholarly journals Evidence of exactness of the mean-field theory in the nonextensive regime of long-range classical spin models

2000 ◽  
Vol 61 (17) ◽  
pp. 11521-11528 ◽  
Author(s):  
Sergio A. Cannas ◽  
A. C. N. de Magalhães ◽  
Francisco A. Tamarit
Keyword(s):  
Field Theory ◽  
Long Range ◽  
Mean Field Theory ◽  
Mean Field ◽  
Spin Models ◽  
Classical Spin ◽  
The Mean ◽  
Classical Spin Models
Sign in / Sign up

Export Citation Format

Share Document