Zobrazeno 1 - 10
of 212
pro vyhledávání: '"VASCONCELLOS, C. A. Z."'
The cooling of neutron stars (hereafter NS) has the potential to reveal important features of superdense matter. Their surface temperatures are known for a fair sample of NS with ages $\leq 10^{6} \, {\it{yr}}$, and with a few exceptions, can be acco
Externí odkaz:
http://arxiv.org/abs/2208.07770
Autor:
Vasconcellos, C. A. Z., Hess, P. O., Hadjimichef, D., Bodmann, B., Razeira, M., Volkmer, G. L.
In this contribution we identify two scenarios for the evolutionary branch cut universe. In the first scenario, the universe evolves continuously from the negative complex cosmological time sector, prior to a primordial singularity, to the positive o
Externí odkaz:
http://arxiv.org/abs/2105.08108
Autor:
Vasconcellos, C. A. Z., Hess, P. O., Hadjimichef, D., Bodmann, B., Razeira, M., Volkmer, G. L.
In this article we follow a previously developed theoretical approach, based in the tools of the singular semi-Riemannian geometry, to push the limits of time beyond the primordial spacetime singularity. By complexifying the Friedmann-Lema\^itre-Robe
Externí odkaz:
http://arxiv.org/abs/2103.07799
Publikováno v:
J. High Energy Phys. 2021, 285 (2021)
We investigate non-inertial effects on $CP$-violating processes using a model, based on the framework of quantum field theory in curved spacetimes, devised to account for the decay of accelerated particles. We show that the $CP$ violation parameter f
Externí odkaz:
http://arxiv.org/abs/2012.09245
The oscillatory movements of atmospheric air masses has been claimed to be the origin of the muon flux variation measured at the ground level. Using a cosmic ray toolkit (CORSIKA), we simulate cascade scenarios in a time scale of a year and show the
Externí odkaz:
http://arxiv.org/abs/2011.06480
An analysis of accelerated kaon decays based on the Unruh effect shows a slight decrease in a CP-violation parameter for very high accelerations, as a consequence of the previously know increase in decay rates for non-inertial systems. Its consequenc
Externí odkaz:
http://arxiv.org/abs/2011.06468
The glueball-quarkonia mixture decay amplitude has been evaluated, in the literature, by diagrammatic techniques for drawing quark lines and the quark-gluon vertex. In this paper we use an alternative approach which consists in a mapping technique, t
Externí odkaz:
http://arxiv.org/abs/1712.08503
In this work, we study the effects of different magnetic field configurations in neutron stars described by a many-body forces formalism (MBF model). The MBF model is a relativistic mean field formalism that takes into account many-body forces by mea
Externí odkaz:
http://arxiv.org/abs/1702.05685
Publikováno v:
The Astrophysical Journal (2015) 808 8
In this work we introduce an extended version of the formalism proposed originally by Taurines et al. that considers the effects of many-body forces simulated by non-linear self-couplings and meson-meson interaction contributions. In this extended ve
Externí odkaz:
http://arxiv.org/abs/1411.4875
Publikováno v:
Astron.Nachr. 335 (2014) 666
In this contribution we study the effects of strong magnetic fields on the particle population of neutron stars with hyperon degrees of freedom in their composition. The star matter is described by a multi-component model with parameterized baryon-me
Externí odkaz:
http://arxiv.org/abs/1407.0271