scholarly journals The quantum brachistochrone problem for an arbitrary spin in a magnetic field

2015 ◽  
Vol 379 (18-19) ◽  
pp. 1233-1239 ◽  
Author(s):  
A.R. Kuzmak ◽  
V.M. Tkachuk
Keyword(s):  
Magnetic Field ◽  
Arbitrary Spin ◽  
Brachistochrone Problem

scholarly journals VACUUM BIREFRINGENCE CAUSED BY ARBITRARY SPIN PARTICLES

2008 ◽  
Vol 23 (04) ◽  
pp. 245-248 ◽  
Author(s):  
S. I. KRUGLOV
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Laser Beam ◽  
Transverse Magnetic Field ◽  
Vacuum Polarization ◽  
Transverse Magnetic ◽  
Arbitrary Spin ◽  
Effective Lagrangian ◽  
Linearly Polarized ◽  
Higher Spin

We study the propagation of a linearly polarized laser beam in the external transverse magnetic field taking into consideration the vacuum polarization by arbitrary spin particles. Induced ellipticity of the beam is evaluated using the effective Lagrangian. With the help of the PVLAS experimental data, we obtain bounds on masses of charged higher spin particles contributed to ellipticity.

scholarly journals Critical phenomena in 1D Ising model with arbitrary spin

2018 ◽  
Vol 185 ◽  
pp. 03004 ◽  
Author(s):  
Alexey Proshkin ◽  
Felix Kassan-Ogly ◽  
Alexander Zarubin ◽  
Tatyana Ponomareva ◽  
Ivan Menshikh
Keyword(s):  
Magnetic Field ◽  
Ising Model ◽  
Critical Phenomena ◽  
Exchange Interactions ◽  
Nearest Neighbors ◽  
Spin Correlation ◽  
Arbitrary Spin ◽  
Zero Temperature ◽  
Spin Correlation Function ◽  
Analytical Formulas

The aim of this work was to study critical phenomena taking place in 1D Ising model with different exchange interactions signs and arbitrary spin values in a magnetic field. Exact analytical formulas for frustration fields, zero temperature magnetization and entropy at these fields are obtained. The general behavior of pair spin correlation function with the accounting of only interactions between nearest neighbors is examined.

Exact Solution of 1D Ising Model on Linear Chain with Arbitrary Spin

2016 ◽  
Vol 845 ◽  
pp. 93-96 ◽  
Author(s):  
Alexey I. Proshkin ◽  
Felix Kassan-Ogly
Keyword(s):  
Magnetic Field ◽  
Exact Solution ◽  
Ising Model ◽  
Exact Solutions ◽  
Applied Magnetic Field ◽  
Linear Chain ◽  
Nearest Neighbors ◽  
Arbitrary Spin

We investigated the Ising model on a linear chain with arbitrary spin including interactions between nearest and next-nearest neighbors in an applied magnetic field. A series of exact solutions and formulas for frustration fields, magnetizations and entropies at these fields at T→0 are found.

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