6 papers
Quantum viscosity mechanism of the dissipative dynamics in the Dicke model expressed via Lindblad equation of motion
M. E. S. Beck, S. S. Seidov, S. I. Muhkin
Quantum dissipation is studied in the superradiant phase of the Extended Dicke model. It is demonstrated analytically by quantum mechanical derivation of the Lindblad equation for…
Analytical solution of coupled self--consistency and linearised Usadel equations for the dirty superconductors at and with the proximity effect
S. S. Seidov, N. G. Pugach
In this manuscript we consider a superconducting film in the vicinity of the critical temperature and presence of the proximity effect. We analytically solve the corresponding line…
Energy spectrum and quantum phase transition of the coupled single spin and an infinitely coordinated Ising chain
S. S. Seidov, N. G. Pugach, A. S. Sidorenko
We consider a spin model, composed of a single spin, connected to an infinitely coordinated Ising chain. Theoretical models of this type arise in various fields of theoretical phys…
First-order phase transition between superconductivity and charge/spin-density wave as the reason of their coexistence in organic metals
Seidali S. Seidov, Vladislav D. Kochev, Pavel D. Grigoriev
The interplay between superconductivity (SC) and spin/charge density wave (DW) in organic metals shows many similarities to high- superconductors. It also contains many puzzle…
Wigner current in multidimensional quantum billiards
S. S. Seidov, D. G. Bezymiannykh
In the present paper we derive the Wigner current of the particle in a multidimensional billiard -- the compact region of space in which the particle moves freely. The calculation…
Density of states in the heterostructure ferromagnetic insulator-superconductor-ferromagnetic insulator
D. V. Seleznev, S. S. Seidov, N. G. Pugach +3
We consider a spin valve composed of a superconducting film (S) between two ferromagnetic insulators (FI) on two sides. In the dirty limit the superconductor is described by Usadel…