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Ionization of atomic hydrogen by electrons: the role of the contributions of the pseudo-states in the second Born approximation
(IOP Publishing, 2013-07-05)
The second Born approximation is often used, particularly when we study double processes such as the ionization?excitation and the double ionization of atoms and molecules by charged particles. But when we apply this ...
¿Qué tan cuántica es la química cuántica?How quantum is quantum chemistry?
(Universidad Nacional de QuilmesUniversidad Nacional de Tres de Febrero, 2019-04-01)
El propósito del presente trabajo será poner de manifiesto que la química cuántica es una disciplina basada primariamente en modelos, y no en teorías que establecen un marco conceptual específico y autónomo. Esta característica ...
Estados ligados de um sistema quântico de três de corpos em duas dimensões na aproximação Born-Oppenheimer
(Universidade Estadual Paulista (Unesp), 2016-07-29)
In this thesis we study mass-imbalanced three-body system in two dimensions using BornOppenheimer approximation. Considering the heavy-light particle system interacting through zero-range interaction and disregarding ...
Estados ligados de um sistema quântico de três de corpos em duas dimensões na aproximação Born-Oppenheimer
(Universidade Estadual Paulista (UNESP), 2016)
The Born-Oppenheimer approximation in an effective field theory framework
(2018-01-01)
The Born-Oppenheimer approximation is the standard method for the studying atoms and molecules. It is founded on the observation that the energy scale of the electron dynamics in a molecule is larger than that of the nuclei. ...
Detection of quantum non-Markovianity close to the Born-Markov approximation
(American Physical Society, 2020-04)
We calculate in an exact way the conditional past-future correlation for the decay dynamics of a two-level system in a bosonic bath. Different measurement processes are considered. In contrast to quantum memory measures ...
Particle correlation from uncorrelated non Born-Oppenheimer SCF wavefunctions
(Springer, 2012-12-29)
We analyse a nonadiabatic self-consistent field method by means of an exactly-solvable model. The method is based on nuclear and electronic orbitals that are functions of the cartesian coordinates in the laboratory-fixed ...
Microscopic origin of non-Gaussian distributions of financial returns
(ELSEVIER SCIENCE BV, 2008)
In this paper we study the possible microscopic origin of heavy-tailed probability density distributions for the price variation of financial instruments. We extend the standard log-normal process to include another random ...
Microscopic origin of non-Gaussian distributions of financial returns
(Elsevier B.V., 2008-03-01)
In this paper we study the possible microscopic origin of heavy-tailed probability density distributions for the price variation of financial instruments. We extend the standard log-normal process to include another random ...