Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Nicolais L. Guevara"'
Publikováno v:
Saha, B, Guevara, N, Sabin, J R, Deumens, E & Ohrn, Y 2016, ' Charge Exchange Collisions of Slow C^6+ with Atomic and Molecular H ', European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics, vol. 70, no. 4, 88, pp. 1-7 . https://doi.org/10.1140/epjd/e2016-60582-2
Charge exchange in collisions of C6+ ions with H and H2 is investigated theoretically at projectile energies 0.1 < E < 10 keV/amu, using electron nuclear dynamics (END) − a semi-classical approximation which not only includes electron translation f
Autor:
Xinming Ou, Hongmin Li, Yuping Li, Doina Caragea, Sankardas Roy, Venkatesh-Prasad Ranganath, Nic Herndon, Jordan DeLoach, Nicolais L. Guevara
Publikováno v:
ACSAC
Although Machine Learning (ML) based approaches have shown promise for Android malware detection, a set of critical challenges remain unaddressed. Some of those challenges arise in relation to proper evaluation of the detection approach while others
Publikováno v:
Chemical Physics Letters. 514:352-356
The statistical correlation between a pair of electrons in Hartree–Fock orbitals is measured by mutual information and studied in position and in momentum space. We show that there are same- and opposite-spin orbital pairs where the correlation is
Publikováno v:
Albert, V, Guevara, N L, Sabin, J R & Harris, F E 2009, ' Few-parameter exponentially correlated wavefunctions for the ground state of lithium ', International Journal of Quantum Chemistry, vol. 109, pp. 3791-3797 . https://doi.org/10.1002/qua.22425
Compact, but relatively accurate wavefunctions for the ground state of the Li atom were obtained through the use of a limited basis of exponentially correlated functions with optimized nonlinear parameters. In contrast to our earlier work, the basis
Publikováno v:
Molecular Physics. 107:2071-2080
We show via Wigner functions how the sum and difference between Shannon entropies in position and in momentum space are related to conditional entropies, and how these quantities are linked to position–momentum correlations. The connection between
Publikováno v:
International Journal of Quantum Chemistry. 109:3036-3040
A simple, seven-parameter trial function is proposed for a description of the ground state of the Lithium atom. It includes both spin functions. Inter-electronic distances appear in exponential form as well as in a pre-exponential factor, and the nec
Autor:
Nicolais L. Guevara, Robin P. Sagar
Publikováno v:
Journal of Molecular Structure: THEOCHEM. 857:72-77
Relative entropy, using a hydrogen-like model density as the reference, is studied in atomic systems. We find that both the position and momentum space measures display the shell effects, being similar in behavior to the expectation value, 〈 r 〉
Autor:
Nicolais L. Guevara, Robin P. Sagar
Publikováno v:
Chemical Physics Letters. 438:330-335
The correlation coefficient and mutual information, used to measure the interdependence between two variables, are generalized to the local level and employed to examine the radial distribution of electron correlation. We compare the behavior of the
Publikováno v:
Astrophysics and Space Science. 308:493-497
1. The exotic system H 3 ++ (which does not exist without magnetic field) exists in strong magnetic fields: (a) In triangular configuration for B≈108–1011 G (under specific external conditions) (b) In linear configuration for B>1010 G 2. In the l
Publikováno v:
Astrophysics and Space Science. 308:499-503
A first detailed study of the low-lying electronic states of the H 3 + molecular ion in linear configuration, parallel to a magnetic field, is carried out for B=0–4.414×1013 G in the Born-Oppenheimer approximation. The variational method is employ