FROM BLOCH MODEL TO THE RATE EQUATIONS II: THE CASE OF ALMOST DEGENERATE ENERGY LEVELS [PDF]
Mathematical Models and Methods in Applied Sciences, 2004 Bloch equations give a quantum description of the coupling between an atom and a driving electric force. In this article, we address the asymptotics of these equations for high frequency electric fields, in a weakly coupled regime.
Brigitte Bidégaray-Fesquet +3 more
core +17 more sources
Diagrammatic treatment of coherent backscattering of intense light by cold atoms with degenerate energy levels [PDF]
Physical Review A, 2014 We present a generalization of the diagrammatic pump-probe approach to coherent backscattering (CBS) of intense laser light for atoms with degenerate energy levels.
Vyacheslav Shatokhin +3 more
core +9 more sources
Lamb shift of non-degenerate energy level systems placed between two infinite parallel conducting plates [PDF]
Journal of Physics A: Mathematical and Theoretical, 2012 The issue of the observability of the Lamb shift in systems with non-degenerate energy levels is put to question. To this end, we compute the Lamb shift of such systems in the electromagnetic environment provided by two infinite parallel conducting ...
Baptiste Billaud, T-T Truong
core +8 more sources
Spin–spin relaxation of nuclear quadrupole resonance coherences and the important role of degenerate energy levels [PDF]
Molecular Physics, 2020 We present an extension of a Redfield approach for calculating spin–spin relaxation rates of zero-field nuclear quadrupole resonance (NQR) coherences, which was published in [Kruk et al., PCCP, 2018, 20, 23414–23426].
Christian Gösweiner +2 more
semanticscholar +5 more sources
Nonlinear propagation of polarized light pulses in a medium of atoms with degenerate energy levels: Adiabatic approach [PDF]
Physical Review A, 2013 We develop a general method allowing one to construct the consistent theory of light pulse propagation through an atomic medium in arbitrary nonlinear regime with respect to the field strength, taking into account the light polarization, temporal ...
V. I. Yudin +3 more
semanticscholar +6 more sources
Description of energy levels and decay properties in 158Gd nucleus [PDF]
Ядерна фізика та енергетика, 2023 In this paper, IBM-1 and IBM-2 with a SU(3) limit are used to describe the 158Gd isotope. The calculations of energy levels in the ground state, beta-, and gamma-bands are made up, which account for 15 energy levels.
Fahmi Sh. Radhi +6 more
doaj +2 more sources
Riemann-Hilbert Problem with Higher Order Poles for Self-Induced Transparency with Degenerate Energy Levels [PDF]
Australian Journal of Physics, 1988 We have analysed the inverse problem for self-induced transparency with degenerate energy levels (DSIl) via the Riemann-Hilbert methodology with second order poles. The required formulae are deduced in detail and the corresponding soliton solutions are obtained. It is noticed that the profile of the single soliton is not of the usual sech type.
A. Roy Chowdhury, Mrityunjoy De
semanticscholar +5 more sources
Recombination Spectra: II. Collisional Transitions Between States of Degenerate Energy Levels [PDF]
Monthly Notices of the Royal Astronomical Society, 1964 R. M. Pengelly, M. J. Seaton
semanticscholar +4 more sources
Communications in Analysis and Mechanics, 2023 In this work, the initial-boundary value problem for the global dynamical properties of solutions to a class of finite degenerate fourth-order parabolic equations with mean curvature nonlinearity is studied.
Yuxuan Chen
doaj +2 more sources
Multiscale dynamics of open three-level quantum systems with two quasi-degenerate levels [PDF]
, 2015 We consider a three-level quantum system interacting with a bosonic thermal reservoir. Two energy levels of the system are nearly degenerate but well separated from the third one.
Berman, Gennady +2 more
core +3 more sources