666 citations
- Universidade Federal do Rio de JaneiroBR289 papers
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44 papers · 1 filter
Unusual features of coarsening with detachment rates decreasing with cluster mass
F. D. A. Aarao Reis, R. B. Stinchcombe
We study conserved one-dimensional models of particle diffusion, attachment and detachment from clusters, where the detachment rates decrease with increasing cluster size as gamma(…
Multicritical Behavior in a Random-Field Ising Model under a Continuous-Field Probability Distribution
Octavio R. Salmon, Nuno Crokidakis, Fernando D. Nobre
A random-field Ising model that is capable of exhibiting a rich variety of multicritical phenomena, as well as a smearing of such behavior, is investigated. The model consists of a…
Pressure induced superconductor quantum critical point in multi-band systems
Igor T. Padilha, Mucio A. Continentino
In multi-band superconductors as inter-metallic systems and heavy fermions, external pressure can reduce the critical temperature and eventually destroy superconductivity driving t…
Pressure induced FFLO instability in multi-band superconductors
Igor T. Padilha, Mucio A. Continentino
Multi-band systems as intermetallic and heavy fermion compounds have quasi-particles arising from different orbitals at their Fermi surface. Since these quasi-particles have differ…
Plane Gravitational Radiation from Neutrinos Source with Kalb-Ramond Coupling
C. N. Ferreira, J. A. Helayel-Neto, N. A. Tomimura
In this work, we propose a model based on a non-minimal coupling of neutrinos to a Kalb-Ramond field. The latter is taken as a possible source for gravitational radiation. As an im…
A simple branching model that reproduces language family and language population distributions
V. Schwämmle, P. M. C. de Oliveira
Human history leaves fingerprints in human languages. Little is known over language evolution and its study is of great importance. Here, we construct a simple stochastic model and…