Large-n limit of the Heisenberg model: Random external field and random uniaxial anisotropy

1991 ◽  
Vol 62 (1-2) ◽  
pp. 21-33 ◽  
Author(s):  
B. A. Khoruzhenko
Keyword(s):  
External Field ◽  
Heisenberg Model ◽  
Uniaxial Anisotropy ◽  
Large N ◽  
Random External Field

scholarly journals Quantum phase transition in a two-dimensional Kondo-Heisenberg model: A dynamical Schwinger-boson large- N approach

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
Jiangfan Wang ◽  
Yung-Yeh Chang ◽  
Chung-Yu Mou ◽  
Stefan Kirchner ◽  
Chung-Hou Chung
Keyword(s):  
Phase Transition ◽  
Quantum Phase Transition ◽  
Heisenberg Model ◽  
Quantum Phase ◽  
Two Dimensional ◽  
Large N

On the mean-field Ising model in a random external field

1985 ◽  
Vol 41 (1-2) ◽  
pp. 299-313 ◽  
Author(s):  
S. R. Salinas ◽  
W. F. Wreszinski
Keyword(s):  
Ising Model ◽  
External Field ◽  
Mean Field ◽  
The Mean ◽  
Random External Field

Phase diagram of an imprinted copolymer in a random external field

1995 ◽  
Vol 28 (13) ◽  
pp. 3657-3666 ◽  
Author(s):  
V S Pande ◽  
A Yu Grosberg ◽  
T Tanaka
Keyword(s):  
Phase Diagram ◽  
External Field ◽  
Random External Field

scholarly journals Non-equilibrium critical dynamics of low-dimensional magnetics and multilayer structures

2018 ◽  
Vol 185 ◽  
pp. 11009
Author(s):  
Pavel V. Prudnikov ◽  
Vladimir V. Prudnikov ◽  
Alena Yu. Danilova ◽  
Vadim O. Borzilov ◽  
Georgy G. Baksheev
Keyword(s):  
Critical Behavior ◽  
Multilayer Structure ◽  
Heisenberg Model ◽  
Uniaxial Anisotropy ◽  
Multilayer Structures ◽  
Critical Dynamics ◽  
Aging Effects ◽  
Magnetic Systems ◽  
Low Dimensional ◽  
Non Equilibrium

The Monte Carlo simulation of the critical behavior of multilayer structures based on anisotropic Heisenberg model is performed. The influence of the uniaxial anisotropy on the critical behavior of the thin Heisenberg-like film is described. The investigation of non-equilibrium critical behavior of multilayer structure which correspond to the nanoscale superlattice Co/Cu demonstrates that the aging effects can be observed in a wider temperature range than for bulk magnetic systems.

scholarly journals A Dielectric Instability of a Fermion Gas in a Random Potential

1977 ◽  
Vol 32 (8) ◽  
pp. 844-852
Author(s):  
V. Dallacasa
Keyword(s):  
External Field ◽  
Crystal Lattice ◽  
Alkali Metals ◽  
Random Potential ◽  
Coulomb Field ◽  
Acoustic Phonons ◽  
Frequency Dependent ◽  
Fermion Gas ◽  
Random External Field

Abstract A dielectric instability of a collection of charged fermions interacting via Coulomb forces and subjected to a random external field is pointed out. It is shown that, as a result of localization produced by the random potential, an RPA Coulomb field can generate a dielectric instability, both static or frequency dependent, resulting in a static or oscillating crystalline arrangement of the fermions. In simple metals, such as the alkali metals, this mechanism is shown to provide an explanation of the existence of the crystal lattice and of acoustic phonons.

scholarly journals Thermal coherence of the Heisenberg model with Dzyaloshinsky-Moriya interactions in an inhomogenous external field

2021 ◽  
pp. 126239
Author(s):  
Manikandan Parthasarathy ◽  
Segar Jambulingam ◽  
Tim Byrnes ◽  
Chandrashekar Radhakrishnan
Keyword(s):  
External Field ◽  
Heisenberg Model

Quantum correlations of three-qubit states driven by a classical random external field

2015 ◽  
Vol 90 (3) ◽  
pp. 035103 ◽  
Author(s):  
Youneng Guo ◽  
Maofa Fang ◽  
Shiyang Zhang ◽  
Xiang Liu
Keyword(s):  
External Field ◽  
Quantum Correlations ◽  
Qubit States ◽  
Random External Field
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