Zobrazeno 1 - 10
of 366
pro vyhledávání: '"Silva, J. E."'
In this paper we study black string solutions considering the Lifshitz anisotropic scaling. We have shown that a new class of asymptotically Lifshitz solutions can be generated by an Einstein-Maxwell-Dilaton theory with a cosmological constant. In th
Externí odkaz:
http://arxiv.org/abs/2406.10138
Publikováno v:
Eur.Phys.J.Plus 139 (2024) 8, 762
In this work, we explore the strain and curvature effects on the electronic properties of a curved graphene structure, called the graphene wormhole. The electron dynamics is described by a massless Dirac fermion containing position--dependent Fermi v
Externí odkaz:
http://arxiv.org/abs/2405.09407
Publikováno v:
JCAP 05 (2024) 123
Einstenian cubic gravity (ECG) is a modified theory of gravity constructed with cubic contractions of the curvature tensor. This theory has the remarkable feature of having the same two propagating degrees of freedom of Einstein gravity (EG), at the
Externí odkaz:
http://arxiv.org/abs/2312.06588
We investigate the effects of the curved geometry on a massless relativistic electron constrained to a graphene strip with a Moebius strip shape. The anisotropic and parity-violating geometry of the Moebius band produces a geometric potential that in
Externí odkaz:
http://arxiv.org/abs/2309.12609
Autor:
Lessa, L. A., Silva, J. E. G.
We investigate the critical behavior of Lifshitz black holes in Einstein-dilaton gravity in the context of spontaneous Lorentz symmetry breaking. Considering the effects of both the bumblebee vacuum expectation value (VEV) and the fluctuations over t
Externí odkaz:
http://arxiv.org/abs/2309.07269
Autor:
Lessa, L. A., Silva, J. E. G.
Publikováno v:
Eur. Phys. J. C 83, 1035 (2023)
We obtain new black hole solutions in a Einstein-Bumblebee-scalar theory. By starting with a Einstein-Bumblebee theory in D + d dimensions, the scalar dilaton field and its interaction with the gravitational and bumblebee fields are obtained by Kaluz
Externí odkaz:
http://arxiv.org/abs/2308.14646
Autor:
Lessa, L. A., Silva, J. E. G.
We investigate the effects of the Einstein cubic gravity (ECG) on regular black hole solutions driven by nonlinear electrodynamics (NLE) sources. The ECG tends to form a naked singularity at the origin for a high ECG coupling constant. Assuming that
Externí odkaz:
http://arxiv.org/abs/2305.18254
Publikováno v:
Phys. Scr. 99 (2024) 0659c2
We study the properties of a two-dimensional non-relativistic electron gas (TDEG) constrained on wires along a M\"{o}bius strip. We considered wires around the strip and along the transverse direction, across the width of the strip. For each directio
Externí odkaz:
http://arxiv.org/abs/2303.05647
Publikováno v:
Classical and Quantum Gravity, (2023) 40 245001
In this work, we analyze the thermodynamic properties of non--interacting particles under influence of the gravitational field of a traversable wormhole. In particular, we investigate how the thermodynamic quantities are affected by the Ellis wormhol
Externí odkaz:
http://arxiv.org/abs/2302.05492
Autor:
Silva, J. E. G.
Symmetric teleparallel gravity (STG) is an alternative description of the gravitational field as an effect of the nonmetricity rather than the curvature of the spacetime. For an specific choice of the symmetric teleparallel lagrangian, the STG dynami
Externí odkaz:
http://arxiv.org/abs/2212.07167