19 citations · 72 across the 15 of their papers we have counts for
16 papers
X-ray resonance therapy with parametric X-ray radiation (PXR) for sulfur-containing tumor tissues
N. Q. San, O. D. Skoromnik, A. U. Leonau +2
We investigate the possibility of usage of the parametric X-ray radiation (PXR) for the selective therapy of superficial sulfur-containing tumor tissues. In these tissues, the conc…
Approximating Hamiltonian for Hartree-Fock solutions for nonrelativistic atoms
N. Q. San, O. D. Skoromnik, V. V. Triguk +1
In our work we construct a Hamiltonian, whose eigenstates approximate the solutions of the self-consistent Hartree-Fock equations for nonrelativistic atoms and ions. Its eigenvalue…
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…
Radiation induced interaction potential of two qubits strongly coupled with a quantized electromagnetic field
I. D. Feranchuk, N. Q. San, A. U. Leonau +1
We investigate the interaction of two two-level qubits with a single mode quantum field in a cavity without rotating wave approximation and considering that qubits can be located a…
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…
A generating integral for the matrix elements of the Coulomb Green's function with the Coulomb wave functions
K. Dzikowski, O. D. Skoromnik
We analytically evaluate the generating integral and integral moments $J_{nl}(β, r) =…
Parametric X-ray radiation in the Smith-Purcell geometry for non-destructive beam diagnostics
O. D. Skoromnik, I. D. Feranchuk, D. V. Lu
We investigate parametric X-ray radiation (PXR) under condition of the extremely asymmetric diffraction, when the ultra-relativistic electron bunch is moving in \textit{vacuum} par…
Analytic approximation for eigenvalues of a class of symmetric Hamiltonians
O. D. Skoromnik, I. D. Feranchuk
An analytical approximation for the eigenvalues of symmetric Hamiltonian , is developed via simple basis se…
Radical increase of the parametric X-ray intensity under condition of extremely asymmetric diffraction
O. D. Skoromnik, V. G. Baryshevsky, A. P. Ulyanenkov +1
Parametric X-ray radiation (PXR) from relativistic electrons moving in a crystal along the crystal-vacuum interface is considered. In this geometry the emission of photons is happe…
Soliton-like solution in quantum electrodynamics
O. D. Skoromnik, I. D. Feranchuk, C. H. Keitel
A novel soliton-like solution in quantum electrodynamics is obtained via a self-consistent field method. By writing the Hamiltonian of quantum electrodynamics in the Coulomb gauge,…
Physical background for parameters of the quantum Rabi model
I. D. Feranchuk, A. V. Leonov, O. D. Skoromnik
We investigate the applicability of the two major approximations which are most commonly employed in the study of the quantum Rabi model, namely the description of a resonant cavit…
Collapse-and-revival dynamics of strongly laser-driven electrons
O. D. Skoromnik, I. D. Feranchuk, C. H. Keitel
The relativistic quantum dynamics of an electron in an intense single-mode quantized electromagnetic field is investigated with special emphasis on the spin degree of freedom. In a…