2.3k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR835 papers
- The Ohio State UniversityUS812 papers
- Universidade de São PauloBR798 papers
- Panjab UniversityIN636 papers
- Universidade Federal do ABCBR635 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di TorinoIT634 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR603 papers
- Benemérita Universidad Autónoma de PueblaMX594 papers
- European Organization for Nuclear ResearchCH583 papers
- Wayne State UniversityUS576 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT570 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di CataniaIT565 papers
44 papers · 1 filter
Long-time-scale revivals in ion traps
H. Moya-Cessa, A. Vidiella-Barranco, J. A. Roversi +2
In this contribution we investigate the interaction of a single ion in a trap with laser beams. Our approach, based on unitary transformating the Hamiltonian, allows its exact diag…
Effects of magnetohydrodynamics matter density fluctuations on the solar neutrino resonant spin-flavor precession
N. Reggiani, M. M. Guzzo, J. H. Colonia +1
Taking into account the stringent limits from helioseismology observations on possible matter density fluctuations described by magnetohydrodynamics theory, we find the correspondi…
On the propagation speed of evanescent modes
A. Pablo, L. Barbero, Hugo E. Hernandez F. +1
The group-velocity of evanescent waves (in undersized waveguides, for instance) was theoretically predicted, and has been experimentally verified, to be Superluminal (v_g > c). By…
On the gravitational field of static and stationary axial symmetric bodies with multi-polar structure
Patricio S. Letelier
We give a physical interpretation to the multi-polar Erez-Rozen-Quevedo solution of the Einstein Equations in terms of bars. We find that each multi-pole correspond to the Newtonia…
Enhanced Diffusion and the Continuous Spontaneous Localization Model
L. F. Santos, C. O. Escobar
We find an analogy between turbulence and the dynamics of the continuous spontaneous localization model (CSL) of the wave function. The use of a standard white noise in the localiz…
Leading particle effect, inelasticity and the connection between average multiplicities in {\bf } and {\bf } processes
M. Batista, R. J. M. Covolan
The Regge-Mueller formalism is used to describe the inclusive spectrum of the proton in collisions. From such a description the energy dependences of both average inelasticit…
On maximal curves in characteristic two
Miriam Abdon, Fernando Torres
The genus g of an F_{q^2}-maximal curve satisfies g=g_1:=q(q-1)/2 or g\le g_2:= [(q-1)^2/4]. Previously, such curves with g=g_1 or g=g_2, q odd, have been characterized up to isomo…
Type-II Supernovae and Neutrino Magnetic Moment
H. Nunokawa, R. Tomas, J. W. F. Valle
The present solar and atmospheric neutrino data together with the LSND results and the presence of hot dark matter (HDM) suggest the existence of a sterile neutrino at the eV scale…
Separation-Sensitive Collision Detection for Convex Objects
Jeff Erickson, Leonidas J. Guibas, Jorge Stolfi +1
We develop a class of new kinetic data structures for collision detection between moving convex polytopes; the performance of these structures is sensitive to the separation of the…
On Superluminal motions in photon and particle tunnelings
J. Jakiel, V. S. Olkhovsky, Erasmo Recami
It is shown that the Hartman-Fletcher effect is valid for all the known expressions of the mean tunnelling time, in various nonrelativistic approaches, for the case of finite width…
Field Purification in the intensity-dependent Jaynes-Cummings model
D. S. Freitas, A. Vidiella-Barranco, J. A. Roversi
We have found that, in the intensity-dependent Jaynes-Cummings model, a field initially prepared in a statistical mixture of two coherent states, and , evolves toward a…
Differential dispersion relations with an arbitrary number of subtractions: a recursive approach
M. J. Menon, A. E. Motter, B. M. Pimentel
Making use of a recursive approach, derivative dispersion relations are generalized for an arbitrary number of subtractions. The results for both cross even and odd amplitudes are…
Differential dispersion relations and elementary amplitudes in a multiple diffraction model
A. F. Martini, M. J. Menon, J. T. S. Paes +1
We discuss the evaluation of the real part of the elementary amplitudes in the context of a multiple diffraction model for elastic scattering earlier developed. The framework…
Current Status of the Resonant Spin-Flavor Precession Solution to the Solar Neutrino Problem
M. M. Guzzo, H. Nunokawa
We discuss the current status of the resonant spin-flavor precession (RSFP) solution to the solar neutrino problem. We perform a fit to all the latest solar neutrino data for vario…
Relativistic and Newtonian core-shell models: analytical and numerical results
Werner M. Vieira, Patricio S. Letelier
We make a detailed analysis of Newtonian as well as relativistic core-shell models recently proposed to describe a black hole or neutron star surrounded by shells of matter, and in…
Atmospheric neutrino observations and flavor changing interactions
M. C. Gonzalez-Garcia, M. M. Guzzo, P. I. Krastev +5
Flavor changing (FC) neutrino-matter interactions can account for the zenith-angle dependent deficit of atmospheric neutrinos observed in the SuperKamiokande experiment, without di…
On Accelerated Black Holes
Patricio S. Letelier, Samuel R. Oliveira
The static and stationary C-metric are revisited in a generic framework and their interpretations studied in some detail. Specially those with two event horizons, one for the black…
Hidden spin-current conservation in 2d Fermi liquids
Paulo F. Farinas, Kevin S. Bedell, Nelson Studart
We report the existence of regimes of the two dimensional Fermi liquid that show unusual conservation of the spin current and may be tuned by varying some parameter like the densit…
Finite temperature molecular dynamics study of unstable stacking fault free energies in silicon
M. de Koning, A. Antonelli, Martin Z. Bazant +2
We calculate the free energies of unstable stacking fault (USF) configurations on the glide and shuffle slip planes in silicon as a function of temperature, using the recently deve…
Comment on ``Theorem for nonrotating singularity-free universes''
Alberto Saa
We show that Raychaudhuri's recently proposed theorem on nonrotating universes cannot be used to rule out realistic singularity-free descriptions of the universe, as suggested by h…
Localization effects in disordered Kondo lattices
E. Miranda, V. Dobrosavljevic
We investigate the role of localization effects in the Kondo disorder mechanism for non-Fermi liquid behavior in disordered Kondo lattices. We find that the distribution of Kondo t…
Local order and magnetic field effects on the electronic properties of disordered binary alloys in the Quantum Site Percolation limit
D. F. de Mello, G. G. Cabrera
Electronic properties of disordered binary alloys are studied via the calculation of the average Density of States (DOS) in two and three dimensions. We propose a new approximate s…
Active-active and active-sterile neutrino oscillation solutions to the atmospheric neutrino anomaly
M. C. Gonzalez-Garcia, H. Nunokawa, O. L. G. Peres +1
We perform a fit to the full data set corresponding to 33.3 kt-yr of data of the Super-Kamiokande experiment as well as to all other experiments in order to compare the two most li…
A Model for the Schottky Anomaly in Metallic
R. E. Lagos, A. C. M. Stein-Barana, G. G. Cabrera
We present a simple model for the doped compound , in order to explain some recent experimental results on the latter. Within a Hartree-Fock context, we star…