Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Penna, A. L. A."'
A vector field coming from spontaneous Lorentz violation mechanism, namely Bumblebee model is analysed in a topological framework in a $(1+2)D$ Minkowski space-time. Taking a $(1+2)D$ nonlinear Bumblebee vector matter field dynamics where we include
Externí odkaz:
http://arxiv.org/abs/2007.12675
Publikováno v:
Results in Physics, p. 104435, v. 26 (2021)
The Kardar-Parisi-Zhang (KPZ) equation has been connected to a large number of important stochastic processes in physics, chemistry and growth phenomena, ranging from classical to quantum physics. The central quest in this field is the search for eve
Externí odkaz:
http://arxiv.org/abs/2006.11417
Autor:
Smart, R. L., Bucciarelli, B., Jones, H. R. A., Marocco, F., Andrei, A. H., Goldman, B., Mendez, R. A., d'Avila, V. A., Burningham, B., Camargo, J. I. B., Crosta, M. T., Daprà, M., Jenkins, J. S., Lachaume, R., Lattanzi, M. G., Penna, J. L., Pinfield, D. J., Neto, D. N. da Silva, Sozzetti, A., Vecchiato, A.
Publikováno v:
2018MNRAS.481.3548S
We present new results from the Parallaxes of Southern Extremely Cool dwarfs program to measure parallaxes, proper motions and multi-epoch photometry of L and early T dwarfs. The observations were made on 108 nights over the course of 8 years using t
Externí odkaz:
http://arxiv.org/abs/1811.00672
In this article, we present a systematic study of the critical behavior of phase oscillators with multiplicative noise from a thermodynamic equilibrium approach. We have already presented the thermodynamics of phase noise oscillators and mapped out i
Externí odkaz:
http://arxiv.org/abs/1606.08095
Autor:
Barbosa, Fernando V., Penna, André L. A., Ferreira, Rogelma M. S., Novais, Keila L., da Cunha, Jefferson A. R., Oliveira, Fernando A.
In this work, we study the pattern solutions of doubly nonlocal logistic map that include spatial kernels in both growth and competition terms. We show that this map includes as a particular case the nonlocal Fisher-Kolmogorov equation, and we demons
Externí odkaz:
http://arxiv.org/abs/1601.07148
Publikováno v:
Phys. Rev. E 93, 052220 (2016)
In this article, we present an approach for the thermodynamics of phase oscillators induced by an internal multiplicative noise. We analytically derive the free energy, entropy, internal energy, and specific heat. In this framework, the formulation o
Externí odkaz:
http://arxiv.org/abs/1601.04352
Autor:
Andrei, Alexandre H., Boscardin, Sergio C., Penna, Jucira L., Leister, Nelson V., Sigismondi, Costantino
Several group in the World followed the solar diameter with dedicated instruments, namely solar astrolabes, since 1974. Their data have been gathered in several observing stations connected in the R2S3 (Reseau de Suivi au Sol du Rayon Solaire) networ
Externí odkaz:
http://arxiv.org/abs/1512.08743
Autor:
Boscardin, Sergio C., Sigismondi, Costantino, Penna, Jucira L., D'Avila, Victor, Reis-Neto, Eugenio, Andrei, Alexandre H.
Started its regular, daily operational phase in 2011 and installed in 2009 by the occasion of the Symp264 in the XXVII IAU GA at Rio de Janeiro, the results so far obtained show that the Heliometer of the Observatorio Nacional fulfilled its planed pe
Externí odkaz:
http://arxiv.org/abs/1512.03358
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Autor:
Marocco, F., Andrei, A. H., Smart, R. L., Jones, H. R. A., Pinfield, D. J., Day-Jones, A. C., Clarke, J. R. A., Sozzetti, A., Lucas, P. W., Bucciarelli, B., Penna, J. L.
We present near-infrared spectroscopy for 52 ultracool dwarfs, including two newly discovered late-M dwarfs, one new late-M subdwarf candidate, three new L and four new T dwarfs. We also present parallaxes and proper motions for 21 of them. Four of t
Externí odkaz:
http://arxiv.org/abs/1309.6525