1.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Bariloche Atomic CentreAR1.2k papers
- Comisión Nacional de Energía AtómicaAR652 papers
- Consejo Nacional de Investigaciones Científicas y TécnicasAR626 papers
- Universidad Nacional de CuyoAR228 papers
- Centre National de la Recherche ScientifiqueFR222 papers
- Universidad de Buenos AiresAR172 papers
- Universidad Nacional de La PlataAR145 papers
- Institute of Astronomy and Space PhysicsAR137 papers
- Universidad Nacional Autónoma de MéxicoMX125 papers
- National University of General San MartínAR111 papers
- Fermi National Accelerator LaboratoryUS106 papers
- Universidade de Santiago de CompostelaES105 papers
33 papers · 1 filter
Quantum effects in with an extra compactified dimension
C. Ccapa Ttira, C. D. Fosco, A. P. C. Malbouisson +1
We evaluate one-loop effects for in the presence of an extra compactified dimension, in a non-trivial vacuum for the gauge field, such that a non-vanishing magnetic flu…
Anisotropic profiles in the spin polarization of multichannel semiconductor rings with Rashba spin orbit coupling
L. E. Segura, M. J. Sánchez
We investigate the spin accumulation effect in eccentric semiconductor multichannel rings with Rashba spin-orbit interaction and threaded by a magnetic flux. Due to the finite ecce…
Ferrotoroidic Moment as a Quantum Geometric Phase
C. D. Batista, G. Ortiz, A. A. Aligia
We present a geometric characterization of the ferrotoroidic moment in terms of a set of Abelian Berry phases. We also introduce a fundamental complex quantity which provides an al…
Features of spin-charge separation in the equilibrium conductance through finite rings
Julian Rincon, A. A. Aligia, K. Hallberg
We calculate the conductance through rings with few sites described by the model, threaded by a magnetic flux and weakly coupled to conducting leads at two arbitrary…
Spin-charge separation in strongly interacting finite ladder rings
Julian Rincon, K. Hallberg, A. A. Aligia
We study the conductance through Aharonov-Bohm finite ladder rings with strongly interacting electrons, modelled by the prototypical t-J model. For a wide range of parameters we ob…
Entanglement entropy for a Dirac fermion in three dimensions: vertex contribution
H. Casini, M. Huerta, L. Leitao
In three dimensions there is a logarithmically divergent contribution to the entanglement entropy which is due to the vertices located at the boundary of the region considered. In…
Flux algebra, Bianchi identities and Freed-Witten anomalies in F-theory compactifications
G. Aldazabal, P. G. Camara, J. A. Rosabal
We discuss the structure of 4D gauged supergravity algebras corresponding to globally non-geometric compactifications of F-theory, admitting a local geometric description in terms…
Localized Spins on Graphene
P. S. Cornaglia, Gonzalo Usaj, C. A. Balseiro
The problem of a magnetic impurity, atomic or molecular, absorbed on top of a carbon atom in otherwise clean graphene is studied using the numerical renormalization group. The spec…
Beyond networks: Opinion formation in triplet-based populations
Damian H. Zanette
We study a process of opinion formation in a population of agents whose interaction pattern is defined on the basis of randomly distributed groups of three agents, or triplets -in…
Infinitesimal Variations of Hodge Structure at Infinity
Javier Fernandez, Eduardo Cattani
By analyzing the local and infinitesimal behavior of degenerating polarized variations of Hodge structure the notion of infinitesimal variation of Hodge structure at infinity is in…
DC four point resistance of a double barrier quantum pump
F. Foieri, L. Arrachea, M. J. Sanchez
We investigate the behavior of the dc voltage drop in a periodically driven double barrier structure (DBS) sensed by voltages probes that are weakly coupled to the system. We find…
Magnetic breakdown of cyclotron orbits in systems with Rashba and Dresselhaus spin-orbit coupling
A. A. Reynoso, Gonzalo Usaj, C. A. Balseiro
We study the effect of the interplay between the Rashba and the Dresselhaus spin-orbit couplings on the transverse electron focusing in two-dimensional electron gases. Depending on…
Dirac constraints in field theory and exterior differential systems
Santiago Capriotti
The usual treatment of a (first order) classical field theory such as electromagnetism has a little drawback: It has a primary constraint submanifold that arise from the fact that…
Inhomogeneous ferrimagnetic-like behavior in Gd2/3Ca1/3MnO3 single crystals
N. Haberkorn, S. Larrégola, D. Franco +1
We present a study of the magnetic properties of Gd2/3Ca1/3MnO3 single crystals at low temperatures. We show that this material behave as an inhomogeneous ferrimagnet. In addition…
Phase Coherence Effects in the Vortex Transport Entropy
G. Bridoux, G. Nieva, F. de la Cruz
Nernst and electrical resistivity measurements in superconducting YBCO and BSCCO with and without columnar defects show a distinctive thermodynamics of the respective liquid vortex…
Anomalous Josephson Current in Junctions with Spin-Polarizing Quantum Point Contacts
A. A. Reynoso, Gonzalo Usaj, C. A. Balseiro +2
We consider a ballistic Josephson junction with a quantum point contact in a two-dimensional electron gas with Rashba spin-orbit coupling. The point contact acts as a spin filter w…
Static and dynamical properties of elliptic quantum corrals
M. Nizama, K. Hallberg, J. d'Albuquerque e Castro
Due to their focalizing properties, elliptic quantum corrals present very interesting physical behaviors. In this work, we analyze static and dynamical properties of these systems.…
Casimir effect with dynamical matter on thin mirrors
C. D. Fosco, F. C. Lombardo, F. D. Mazzitelli
We calculate the Casimir energy for scalar and gauge fields in interaction with zero-width mirrors, including quantum effects due to the matter fields inside the mirrors. We consid…
Beyond the Quantum Adiabatic Approximation: Adiabatic Perturbation Theory
Gustavo Rigolin, Gerardo Ortiz, Victor Hugo Ponce
We introduce a perturbative approach to solving the time dependent Schroedinger equation, named adiabatic perturbation theory (APT), whose zeroth order term is the quantum adiabati…
Valence-Bond Dynamical Mean-Field Theory of Doped Mott Insulators with Nodal/Antinodal Differentiation
M. Ferrero, P. S. Cornaglia, L. De Leo +3
We introduce a valence-bond dynamical mean-field theory of doped Mott insulators. It is based on a minimal cluster of two orbitals, each associated with a different region of momen…
Observation of the suppression of the flux of cosmic rays above 4x10^19eV
The Pierre Auger Collaboration
The energy spectrum of cosmic rays above 2.5x10^18eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the flux, J ~ E…
Contact switching as a control strategy for epidemic outbreaks
Sebastian Risau-Gusman, Damian H. Zanette
We study the effects of switching social contacts as a strategy to control epidemic outbreaks. Connections between susceptible and infective individuals can be broken by either ind…
Variational approach to vortex penetration and vortex interaction
Alexander D. Hernández, Arturo López
A variational calculation for vortex penetration is presented. Variational trial functions for the Meissner state are combined with variational functions for a vortex near the surf…
Dimensional reduction as a method to obtain dual theories for massive spin two in arbitray dimensions
A. Khoudeir, R. Montemayor, Luis F. Urrutia
Using the parent Lagrangian method together with a dimensional reduction from to dimensions we construct dual theories for massive spin two fields in arbitrary dimensio…