Zobrazeno 1 - 10
of 1 034
pro vyhledávání: '"Born–Huang approximation"'
Publikováno v:
Theoretical and Mathematical Physics. 192:1365-1379
We discuss an adiabatic approximation for the evolution generated by an A-uniformly pseudo-Hermitian Hamiltonian H(t). Such a Hamiltonian is a time-dependent operator H(t) similar to a time-dependent Hermitian Hamiltonian G(t) under a time-independen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d1a75c7a2ecaa1d2e2c93581d18d3f5
https://doi.org/10.1134/s0040577917090070
https://doi.org/10.1134/s0040577917090070
Autor:
Jeffrey R. Reimers, Noel S. Hush
Publikováno v:
Chemical Physics Letters. 683:467-477
Transition-state spectra are mapped out using generalized adiabatic electron-transfer theory. This simple model depicts diverse chemical properties, from aromaticity, through bound reactions such as isomerizations and atom-transfer processes with cla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfd3586646602e1087cf58339876d746
https://doi.org/10.1016/j.cplett.2017.04.070
https://doi.org/10.1016/j.cplett.2017.04.070
Publikováno v:
Journal of Applied Nonlinear Dynamics. 6:153-171
A model-reduction methodology for fractional-order systems based on the Hankel-norm is presented. The methodology involves the truncation of a Laurent series associated with the fractional-order system in a transformed domain. The truncated Laurent s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07e0aff390f5b3c6715acdbca31e459d
https://doi.org/10.5890/jand.2017.06.003
https://doi.org/10.5890/jand.2017.06.003
Autor:
Leonardo S. Lima
Publikováno v:
Solid State Communications. 258:21-24
We calculate the optical conductivity of the generalized two-dimensional Hubbard model including vertex corrections, by using a ladder approximation in the diagrammatic expansion. We have obtained a superconductor behavior for this system at low temp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a07c79ff0ac90ae0638e456b3b34704
https://doi.org/10.1016/j.ssc.2017.04.012
https://doi.org/10.1016/j.ssc.2017.04.012
Autor:
L. A. Kalyakin
Publikováno v:
Mathematical Notes. 101:850-862
Aspecific problem is used to illustrate the limits of the approach resulting in an adiabatic approximation. The system of differential equations modeling the cyclotron motion of a charged relativistic particle in the field of an electromagnetic wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::47fa1655297ca4fc9211499ecea91efa
https://doi.org/10.1134/s000143461705011x
https://doi.org/10.1134/s000143461705011x
Autor:
O. Litt, W. H. Bassichis
Publikováno v:
Theoretical and Mathematical Physics. 190:109-119
We use a non-gauge-invariant modification of the exact Hamiltonian to obtain a new Hamiltonian-like operator for a simple exactly solvable boson model. The eigenvalues of the new operator are close to those of the original Hamiltonian. We make a one-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcf804ee9c9a152cea052a2e4a3b75fa
https://doi.org/10.1134/s0040577917010093
https://doi.org/10.1134/s0040577917010093
Autor:
Artur F. Izmaylov, Ignacio Franco
Publikováno v:
Journal of Chemical Theory and Computation. 13:20-28
The role of electron-nuclear entanglement on the validity of the Born-Oppenheimer (BO) approximation is investigated. Although nonadiabatic couplings generally lead to entanglement and to a failure of the BO approximation, surprisingly the degree of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0d96d399931183bf134cc2a1319777f
https://doi.org/10.1021/acs.jctc.6b00959
https://doi.org/10.1021/acs.jctc.6b00959
Autor:
Diptesh Dey, Ashwani K. Tiwari
Publikováno v:
The Journal of Physical Chemistry A. 120:8259-8266
Quantum dynamical behavior of H2+ in the presence of a linearly polarized, ultrashort, intense, infrared laser pulse has been studied by numerically solving the time-dependent Schrodinger equation with nuclear motion restricted in one-dimension along
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a55d6bfdb84e2f9e1a762174b5799a8
https://doi.org/10.1021/acs.jpca.6b09004
https://doi.org/10.1021/acs.jpca.6b09004
Autor:
Xinrong Cao, Jiangmeng Wang
Publikováno v:
Annals of Nuclear Energy. 92:295-303
In this paper, the applicability of the adiabatic approximation on the neutron noise analysis in the molten salt reactor (MSR) is investigated. The neutronic model considering the fuel recirculation is established based on one-group neutron diffusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25c187b257b58e7ea197e3ab2351a3fd
https://doi.org/10.1016/j.anucene.2016.01.039
https://doi.org/10.1016/j.anucene.2016.01.039
Publikováno v:
The Journal of Physical Chemistry A. 120:3316-3325
In the Born-Oppenheimer approximation, the electronic wave function is typically real-valued and hence the electronic flux density (current density) seems to vanish. This is unfortunate for chemistry, because it precludes the possibility to monitor t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd1b2d9a27c66307331e1c2042c57994
https://doi.org/10.1021/acs.jpca.5b12657
https://doi.org/10.1021/acs.jpca.5b12657