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
49 papers · 1 filter
Ferromagnetic- and Superconducting-like Behavior of Graphite
Y. Kopelevich, P. Esquinazi, J. H. S. Torres +1
We have identified ferromagnetic- and superconducting-like magnetization hysteresis loops in highly oriented pyrolytic graphite samples below and above room temperature. We also fo…
Dynamics of lattice pinned charge stripes
Y. A. Dimashko, C. Morais Smith, N. Hasselmann +1
We study the transversal dynamics of a charged stripe (quantum string) and show that zero temperature quantum fluctuations are able to depin it from the lattice. If the hopping amp…
Burgers Turbulence and the Continuous Spontaneous Localization Model
L. F. Santos, C. O. Escobar
There is a striking convergence between Burgers turbulence and the continuous spontaneous localization [CSL] model of quantum mechanics. In this paper, we exploit this analogy show…
Testing Flavor Changing Neutrino Interactions in Long Baseline Experiments
A. M. Gago, L. P. Freitas, O. L. G. Peres +1
We have investigated the possibility of discerning mass from flavor changing neutrino interactions induced oscillations in the long baseline neutrino experiments K2K a…
Embedding of a maximal curve in a Hermitian variety
Gabor Korchmaros, Fernando Torres
Let X be a projective geometrically irreducible non-singular algebraic curve defined over a finite field F of order . If the number of F-rational points of X satisfies the Has…
Convergence to the maximal invariant measure for a zero-range process with random rates
Enrique D. Andjel, Pablo A. Ferrari, Herve Guiol +1
We consider a one-dimensional totally asymmetric nearest-neighbor zero-range process with site-dependent jump-rates - an environment. For each environment p we prove that the set o…
Perfect simulation for interacting point processes, loss networks and Ising models
Roberto Fernandez, Pablo A. Ferrari, Nancy Garcia
We present a perfect simulation algorithm for measures that are absolutely continuous with respect to some Poisson process and can be obtained as invariant measures of birth-and-de…
Anomaly of AC resistance in magnetic nanoparticle alloys at spin-glass-like transition
A. B. Pakhomov, J. C. Denardin, M. Knobel +1
(withdrawn) A combined study of magnetic susceptibility and AC resistance was performed on melt-spun Cu-Co granular magnetic ribbons. The AC resistance as a function of temperature…
Chaos and Fractals in Geodesic Motions Around a Non-Rotating Black-Hole with an External Halo
Alessandro P. S. de Moura, Patricio S. Letelier
We investigate the occurrence chaos in the escape of test particles moving in the field of a Schwarzschild black hole surrounded by an external halo. The motion of both material pa…
Scattering map for two black holes
Alessandro P. S. de Moura, Patricio S. Letelier
We study the motion of light in the gravitational field of two Schwarzschild black holes, making the approximation that they are far apart, so that the motion of light rays in the…
Fractal escapes in Newtonian and relativistic multipole gravitational fields
Alessandro P. S. de Moura, Patricio S. Letelier
We study the planar motion of test particles in gravitational fields produced by an external material halo, of the type found in many astrophysical systems, such as elliptical gala…
Chaos in one-dimensional lattices under intense laser fields
M. A. M. de Aguiar, H. S. Brandi, Belita Koiller +1
A model is investigated where a monochromatic, spatially homogeneous laser field interacts with an electron in a one-dimensional periodic lattice. The classical Hamiltonian is pres…
The Two-Component Virial Theorem and the Physical Properties of Stellar Systems
Christine C. Dantas, Andre L. B. Ribeiro, Hugo V. Capelato +1
Motivated by present indirect evidences that galaxies are surrounded by dark matter halos, we investigate whether their physical properties can be described by a formulation of the…
Finite-temperature properties of the two-orbital Anderson model
Luis Craco
The metallic phase of the two-orbital Anderson lattice is study in the limit of infinite spatial dimensions, where a second order perturbation treatment is used to solve the single…
Entanglement and nonextensive statistics
A. Vidiella-Barranco
It is presented a generalization of the von Neumann mutual information in the context of Tsallis' nonextensive statistics. As an example, entanglement between two (two-level) quant…
The Solar Neutrino Problem and Gravitationally Induced Long-wavelength Neutrino Oscillation
A. M. Gago, H. Nunokawa, R. Zukanovich Funchal
We have reexamined the possibility of explaining the solar neutrino problem through long-wavelength neutrino oscillations induced by a tiny breakdown of the weak equivalence princi…
The periodic Anderson model from the atomic limit and FeSi
M. E. Foglio, M. S. Figueira
The exact Green's functions of the periodic Anderson model for are formally expressed within the cumulant expansion in terms of an effective cumulant. Here we resort…
Scaling violations: Connections between elastic and inelastic hadron scattering in a geometrical approach
P. C. Beggio, M. J. Menon, P. Valin
Starting from a short range expansion of the inelastic overlap function, capable of describing quite well the elastic pp and scattering data, we obtain extensions to the…
Recovering coherence from decoherence: a method of quantum state reconstruction
H. Moya-Cessa, J. A. Roversi, S. M. Dutra +1
We present a feasible scheme for reconstructing the quantum state of a field prepared inside a lossy cavity. Quantum coherences are normally destroyed by dissipation, but we show t…
Flavor changing models with strictly massless neutrinos
M. M. Guzzo, H. Nunokawa, O. L. G. Peres +2
Theoretical models which present flavor changing neutrino interactions and simultaneously prevent this particle from acquiring any mass exist. We discuss some of them and their pre…
Charm Contribution to the Structure Function in Diffractive Deep Inelastic Scattering
R. J. M. Covolan, A. V. Kisselev, M. S. Soares
The charm contribution to the structure functions of diffractive deep inelastic scattering is considered here within the context of the Ingelman-Schlein model. Numerical estimation…
Optical and Magneto-optical Response of a Doped Mott Insulator
Mukul S. Laad, Luis Craco, E. Müller-Hartmann
We study the optical, Raman, and ac Hall response of the doped Mott insulator within the dynamical mean-field theory () for strongly correlated electron systems. The occu…
Exact General Relativistic Disks with Magnetic Fields
Patricio S. Letelier
The well-known ``displace, cut, and reflect'' method used to generate cold disks from given solutions of Einstein equations is extended to solutions of Einstein-Maxwell equations.…
Quantum state reconstruction in the presence of dissipation
H. Moya-Cessa, S. M. Dutra, A. Vidiella-Barranco +1
We propose a realistic scheme to determine the quantum state of a single mode cavity field even after it has started to decay due to the coupling with an environment. Although diss…