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- Universidade do Estado do Rio de JaneiroBR4 papers
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8 papers · 1 filter
Enriched spin curves on stable curves with two components
Marco Pacini
L. Maino constructed a moduli space for enriched stable curves, by blowing-up the moduli space of Deligne-Mumford stable curves. We introduce enriched spin curves, showing that a p…
Transitive orientations in bull-reducible Berge graphs
Celina de Figueiredo, Frederic Maffray, Claudia Villela Maciel
A bull is a graph with five vertices and five edges , , , , . A graph is bull-reducible if no vertex of lies in two bulls. We prove that…
Monte Carlo Simulations for the Slow Relaxations of Crumpled Surfaces
Klauko P. Mota, Paulo Murilo C. de Oliveira
In this paper we study crumpled surfaces through Monte Carlo Simulations. The crumpled surface is represented by a cluster of spins pointing up and spins pointing down represent th…
Robust ergodic properties in partially hyperbolic dynamics
Martin Andersson
We study ergodic properties of partially hyperbolic systems whose central direction is mostly contracting. Earlier work of Bonatti, Viana about existence and finitude of physical m…
Phase transition of the nucleon-antinucleon plasma at different ratios
A. Delfino, M. Jansen, V. S. Timóteo
We investigate phase transitions for the Walecka model at very high temperatures. As is well known, depending on the parametrization of this model and for the particular case of a…
Extrema of discrete Wigner functions and applications
Andrea Casaccino, Ernesto F. Galvao, Simone Severini
We study the class of discrete Wigner functions proposed by Gibbons et al. [Phys. Rev. A 70, 062101 (2004)] to describe quantum states using a discrete phase-space based on finite…