2,772 research outputs found
The Godel metric in the Chern-Simons modified gravity
We discuss the consistency of the Godel metric within the Chern-Simons
modified gravity, both for external and dynamical Chern-Simons coefficients.Comment: 6 pages; to be published in the Proceedings of 5th International
Workshop on Astronomy and Relativistic Astrophysics (IWARA 2011), matches the
accepted versio
Manual de processamento de conserva de pimenta.
Introdução. Definição do produto. Etapas do processamento da pimenta. Equipamentos e utensílios. Recomendações gerais sobre Boas Práticas de Fabricação - BPL - na indústria de alimentos. Referências bibliográficas.bitstream/item/79986/1/doc64-2005.pd
Effects of Lorentz violation in the Bose-Einstein condensation
In this paper we study the corrections emergent from a Lorentz-violating
CPT-odd extension of the complex scalar sector to the Bose-Einstein
condensation and to the thermodynamics parameters. We initially discussed some
features of the model to only then compute the corrections to the Bose-Einstein
condensation. The calculations were done by computing the generating
functional, from which we extract the thermodynamics parameters. We also
obtained a Lorentz-violating correction for the critical temperature that
sets the Bose-Einstein Condensation.Comment: 6 pages. 2 figures. Version accepted by EPL. Minor typo corrections.
arXiv admin note: text overlap with arXiv:2009.0230
Electronic properties of curved graphene sheets
A model is proposed to study the electronic structure of slightly curved
graphene sheets with an arbitrary number of pentagon-heptagon pairs and
Stone-Wales defects based on a cosmological analogy. The disorder induced by
curvature produces characteristic patterns in the local density of states that
can be observed in scanning tunnel and transmission electron microscopy.Comment: Corrected versio
Self-Forces on Electric and Magnetic Linear Sources in the Space-Time of a Cosmic String
In this paper we calculate the magnetic and electric self-forces, induced by
the conical structure of a cosmic string space-time, on a long straight wire
which presents either a constant current or a linear charge density. We also
show how these self-forces are related by a Lorentz tranformation and, in this
way, explain what two different inertial observers detect in their respective
frames.Comment: 10 pages, LaTeX, to be published in Phys. Rev. D
- …