3 papers
nlin.SI2024
On the -waves hierarchy with constant boundary conditions. Spectral properties
Vladimir S. Gerdjikov, Georgi G. Grahovski
The paper is devoted to -wave equations with constant boundary conditions related to symplectic Lie algebras. We study the spectral properties of a class of Lax operators , w…
cond-mat.stat-mech2024
Thermodynamic properties of disordered quantum spin ladders
Erol Vatansever, Georgi G. Grahovski, Nikolaos G. Fytas
In this paper, we study the thermodynamic properties of spin- antiferromagnetic Heisenberg ladders by means of the stochastic series expansion quantum Monte Carlo technique. T…
nlin.SI2024
On affine Toda field theories related to algebras and their real Hamiltonian forms
Vladimir S. Gerdjikov, Georgi G. Grahovski
The paper deals with affine 2-dimensional Toda field theories related to simple Lie algebras of the classical series . We demonstrate that the complexification procedure…