41 citations · 77 across the 7 of their papers we have counts for
7 papers
Classification of integrable clusters of classical Heisenberg spins
Marco Ameduri, Bogomil Gerganov, Richard A. Klemm
In this letter we present a general classification of integrable models of identical classical spins coupled via the isotropic Heisenberg Hamiltonian. Our constructive proof of int…
Exact time correlation functions for N classical Heisenberg spins in the `squashed' equivalent neighbor model
Marco Ameduri, Richard A. Klemm
We present exact integral representations of the time-dependent spin-spin correlation functions for the classical Heisenberg N-spin `squashed' equivalent neighbor model, in which o…
Exactly solvable model of three interacting particles in an external magnetic field
E. P. Nakhmedov, K. Morawetz, M. Ameduri +2
The quantum mechanical problem of three identical particles, moving in a plane and interacting pairwise via a spring potential, is solved exactly in the presence of a magnetic fiel…
Exact Time Autocorrelation Function of the N-Spin Classical Heisenberg Equivalent Neighbor Model
Richard A. Klemm, Marco Ameduri
We reduce the autocorrelation function of the equivalent neighbor model of classical spins exhibiting Heisenberg dynamics and exchange coupling to quadrature. A…
Time Correlation Functions of Three Classical Heisenberg Spins on an Isosceles Triangle and on a Chain: Strong Effects of Broken Symmetry
Marco Ameduri, Richard A. Klemm
At arbitrary temperature , we solve for the dynamics of single molecule magnets composed of three classical Heisenberg spins either on a chain with two equal exchange constants…
On the Integrability of the Bukhvostov-Lipatov Model
Marco Ameduri, Costas J. Efthimiou, Bogomil Gerganov
The integrability of the Bukhvostov-Lipatov four-fermion model is investigated. It is shown that the classical model possesses a current of Lorentz spin 3, conserved both in the bu…