19 citations · 96 across the 21 of their papers we have counts for
19 papers
Ground state of the gauge invariant Dicke model: condensation of the photons in non-classical states
N. Q. San, O. D. Skoromnik, A. P. Ulyanenkov +2
We investigate the ground state of two physically motivated modifications of the Dicke model. The first modification corresponds to particles whose phase space contains only two st…
Superradiant parametric X-ray emission
I. D. Feranchuk, N. Q. San, O. D. Skoromnik
We compute a spectrum of parametric X-ray radiation (PXR) inside a crystal from a bunch of electrons, which is periodically modulated in density. We consider that the bunch of elec…
Eigenstates of two-level systems in a single-mode quantum field: from quantum Rabi model to -atom Dicke model
A. U. Leonau, N. Q. San, A. P. Ulyanenkov +2
In the present paper we show that the Hamiltonian describing the resonant interaction of two-level systems with a single-mode electromagnetic quantum field in the Coulomb gauge…
Exact solution for the quantum Rabi model with the term
I. D. Feranchuk, N. Q. San, A. U. Leonau +1
Quantum Rabi model (QRM) is widely used for the analysis of the radiation-matter interaction at the fundamental level in cavity quantum electrodynamics. Typically the QRM Hamiltoni…
Relativistic effective charge model of a multi-electron atom
K. Dzikowski, O. D. Skoromnik, I. D. Feranchuk +2
A relativistic version of the effective charge model for computation of observable characteristics of multi-electron atoms and ions is developed. A complete and orthogonal Dirac hy…
Parametric Mössbauer radiation source
O. D. Skoromnik, I. D. Feranchuk, J. Evers +1
Numerous applications of Mössbauer spectroscopy are related to a unique resolution of absorption spectra of resonant radiation in crystals, when the nucleus absorbs a photon withou…