Publications (29)
Extension of the sum rule for the transition rates between multiplets to the multiphoton case
D. Solovyev, L. Labzowsky, A. Volotka +1
The sum rule for the transition rates between the components of two multiplets, known for the one-photon transitions, is extended to the multiphoton transitions in hydrogen and hyd…
Spin-Statistic Selection Rules for Multiphoton Transitions: Application to Helium Atom
T. Zalialiutdinov, D. Solovyev, L. Labzowsky +1
A theoretical investigation of the three-photon transition rates and for the helium atom is presented. P…
Theoretical prerequisites for the upcoming generation of precision spectroscopic experiments
D. Solovyev, T. Zalialiutdinov, A. Anikin +1
Modern resonant spectroscopic experiments to measure transition frequencies in atoms have reached a level where a meticulous description of all aspects of the processes under study…
Spin-Statistic Selection Rules for Multi-Equal-Photon Transitions in Atoms: Extension of the Landau-Yang Theorem to Multiphoton Systems
T. Zalialiutdinov, D. Solovyev, L. Labzowsky +1
We establish the existence of spin-statistic selection rules (SSSR) for multi-equal-photon transitions in atomic systems. These selection rules are similar to those for systems of…
Answer on the comment by S. G. Karshenboim, V. G. Ivanov and J. Chluba
L. Labzowsky, D. Solovyev
We studied carefully the comment by S. G. Karshenboim, V. G. Ivanov and J. Chluba to our paper "Two-photon approximation in the theory of the electron recombination in hydrogen" an…
Alternative interpretation of relativistic time-reversal and the time arrow
T. Zalialiutdinov, D. Solovyev, D. Chubukov +2
It is well-known that the 4-rotation in the 4-dimensional space-time is equivalent to the CPT-transformation (C is the charge conjugation, P is the space inversion and T is the tim…
Accurate spline solutions of the Dirac equation with parity-nonconserving potential
L. Labzowsky, A. Prozorov
The complete system of the B-spline solutions for the Dirac equation with the parity-nonconserving (PNC) weak interaction effective potential is obtained. This system can be used f…
QED model of the radiation escape from the matter
T. Zalialiutdinov, D. Solovyev, L. Labzowsky
A simple model based on QED is presented for the estimation of contribution of the excited level few-photon decays to the radiation escape from the matter in the epoch of the cosmo…
Recombination process for hydrogen atom in presence of blackbody radiation
D. Solovyev, T. Zalialiutdinov, A. Anikin +2
The process of recombination for the hydrogen atom in the heat bath creating the blackbody radiation is descibed within the frameworks of quantum electrodynamics. For this purpose…
Two-photon decay of excited levels in hydrogen: the ambiguity of the separation of cascades and pure two-photon emission
L. Labzowsky, D. Solovyev, G. Plunien
The problem of the evaluation of the two-photon decay width of excited states in hydrogen is considered. Two different approaches to the evaluation of the width including cascades…
Two-photon decays of highly excited states in hydrogen
D. Solovyev, V. Dubrovich, A. V. Volotka +2
The relativistic and nonrelativistic approaches for the calculations of the two-photon decay rates of highly excited states in hydrogen are compared. The dependence on the principa…
Theoretical study of the accuracy limits for the optical resonance frequency measurements
L. Labzowsky, G. Schedrin, D. Solovyev +1
The principal limits for the accuracy of the resonance frequency measurements set by the asymmetry of the natural resonance line shape are studied and applied to the recent accurat…
One- and two-photon resonant spectroscopy of hydrogen and anti-hydrogen atoms in external electric fields
L. Labzowsky, D. Solovyev, V. Sharipov +2
The resonant spectra of hydrogen and anti-hydrogen atoms in the presence of an external electric field are compared theoretically. It is shown that nonresonant corrections to the t…
Radiative QED corrections to one-photon transition rates in hydrogen atom at finite temperatures
T. Zalialiutdinov, D. Solovyev, L. Labzowsky
Within the framework of QED theory at finite temperature the thermal radiative corrections to spontaneous one-photon transition rates in hydrogen atom are investigated. The radiati…
Line Profile Asymmetry in Precision Spectroscopy
A. Anikin, T. Zalialiutdinov, D. Solovyev +1
In this review, we have investigated the asymmetry of the line profile in precision one- and two-photon spectroscopy of hydrogen and helium atoms within the framework of a rigorous…
The second-order electron self-energy in hydrogen-like ions
I. Goidenko, L. Labzowsky, A. Nefiodov +2
A calculation of the simplest part of the second-order electron self-energy (loop after loop irreducible contribution) for hydrogen-like ions with nuclear charge numbers $3 \leq Z…
Excited states of the helium-antihydrogen system
V. Sharipov, L. Labzowsky, G. Plunien
Potential energy curves for excited leptonic states of the helium-antihydrogen system are calculated within Ritz' variational approach. An explicitly correlated ansatz for the lept…
QED calculations of three-photon transition probabilities in H-like ions with arbitrary nuclear charge
T. Zalialiutdinov, D. Solovyev, L. Labzowsky
The quantum electrodynamical theory of the three-photon transitions in hydrogen-like ions is presented. Emission probabilities of various three-photon decay channels for $ 2p_{3/2}…
Theory of the multiphoton cascade transitions with two photon links: comparison of Quantum Electrodynamical and Quantum Mechanical approaches
T. Zalialiutdinov, Yu. Baukina, D. Solovyev +1
QED theory of multiphoton cascade transitions in atoms and ions is developed. In particular the , and processes…
BBR-induced Stark shifts and level broadening in helium atom
T. Zalialiutdinov, D. Solovyev, L. Labzowsky
The precise calculations of blackbody radiation (BBR)-induced Stark shifts and depopulation rates for low-lying states of helium atom with the use of variational approach are prese…
Influence of external electric fields on multi-photon transitions between the 2s, 2p and 1s levels for hydrogen and anti-hydrogen atoms and hydrogen-like ions
D. Solovyev, L. Labzowsky, G. Plunien +1
One- and two-photon transitions in the hydrogen atom are analytically evaluated in the absence and in the presence of an external electric field. The emission probabilities are dif…
The Standard Model in Strong Fields: Electroweak Radiative Corrections for Highly Charged Ions
I. Bednyakov, L. Labzowsky, G. Plunien +2
Electroweak radiative corrections to the matrix elements are calculated for highly charged hydrogenlike ions. These matrix elements constitute…
Access via laboratory experiments to the level mixing effect induced by blackbody radiation and its influence on the cosmological hydrogen recombination problem
T. Zalialiutdinov, D. Solovyev, L. Labzowsky +1
An effect of atomic line broadening induced by the blackbody radiation is discussed. The level mixing effect and anti-Stokes Raman scattering are compared. It is shown that the mix…
Importance of nonresonant corrections for the description of atomic spectra
D. Solovyev, A. Anikin, T. Zalialiutdinov +1
We demonstrate that the present superaccurate measurements of transition processes between atomic states in hydrogen atom reached the limit of accuracy when transition frequency ca…
QED theory of the multiphoton cascade transitions in atoms
L. Labzowsky, D. Solovyev, T. Zalialiutdinov
QED theory of multiphoton cascade transitions in atoms and ions is developed. This theory allows for the accurate description of the process important for astrophysical studies of…
Evaluation of the low-lying energy levels of two- and three-electron configurations for multi-charged ions
O. Yu. Andreev, L. Labzowsky, G. Plunien +1
Accurate QED evaluations of the one- and two-photon interelectron interaction for low lying two- and three-electron configurations for ions with nuclear charge numbers $60\le Z \le…
Two-photon approximation in the theory of the electron recombination in hydrogen
D. Solovyev, L. Labzowsky
A rigorous QED theory of the multiphoton decay of excited states in hydrogen atom is presented. The "two-photon" approximation is formulated which is limited by the one-photon and…
Reassessment of line profile asymmetry in measurements of the 1s-2s energy interval in hydrogen
D. Solovyev, A. Anikin, T. Zalialiutdinov +1
Experiments to determine transition frequencies in the hydrogen atom represent some of the most precise spectroscopic measurements and are at a higher level among simple atomic sys…
Evidence for the absence of regularization corrections to the partial-wave renormalization procedure in one-loop self energy calculations in external fields
I. Goidenko, G. Plunien, S. Zschocke +2
The equivalence of the covariant renormalization and the partial-wave renormaliz ation (PWR) approach is proven explicitly for the one-loop self-energy correction (SE) of a bound e…