Zobrazeno 1 - 10
of 5 113
pro vyhledávání: '"Oliveira, A. A. S."'
Autor:
Oliveira, R. R. S.
In this comment, we obtain the complete energy levels for Dvornikov's paper, that is, the energy levels dependent on two quantum numbers, namely, the radial quantum number (given by $N$) and the angular quantum number (given by $J_z$). In particular,
Externí odkaz:
http://arxiv.org/abs/2411.04338
Autor:
Oliveira, R. R. S.
In this paper, we determine the relativistic bound-state solutions for the charged (DO) Dirac oscillator in a rotating frame in the Bonnor-Melvin-Lambda spacetime in $(2+1)$-dimensions, where such solutions are given by the two-component Dirac spinor
Externí odkaz:
http://arxiv.org/abs/2410.17535
Autor:
Kegler, Vanessa D., de Oliveira, Igor S. S., Pacine, Dominike, Nunes, Ricardo W., Pereira, Teldo A. S., Lima, Erika N.
This study investigates the structural, mechanical, and electronic properties of novel two-dimensional (2D) pentaoctite (PO) monolayers composed of group-IV elements (PO-C, PO-Si, PO-Ge, and PO-Sn) using first-principles calculations. Stability is ex
Externí odkaz:
http://arxiv.org/abs/2409.05986
Collider-testable type I seesaw extensions of the Standard Model are generally protected by an approximate lepton number (LN) symmetry. Consequently, they predict pseudo-Dirac heavy neutral leptons (HNLs) composed of two nearly degenerate Majorana fi
Externí odkaz:
http://arxiv.org/abs/2408.01389
Autor:
Oliveira, R. R. S.
Publikováno v:
Phys. Lett. B 856 (2024) 138888
In this comment, we point out a series of errors made by Senjaya in your paper (2024) \cite{Senjaya}. In particular, these errors involved the Dirac equation in the 3+1 dimensional Schwarzschild spacetime, tetrad field, curved gamma matrices, and the
Externí odkaz:
http://arxiv.org/abs/2407.18790
In this work, we investigate the massive Kane-Mele model for graphene in the presence of disclination and an external magnetic field, where graphene behaviors as a topological insulator. In the low-energy limit, the effective field equation for graph
Externí odkaz:
http://arxiv.org/abs/2407.03947
Autor:
Oliveira, R. R. S.
In this comment, we showed that the line element ("metric'') worked by Jusufi (Eur. Phys. J. C 76: 332, 2016) is incorrect since he worked with a spinning cosmic string with torsion in $(2+1)$-dimensions (and in polar coordinates), which cannot happe
Externí odkaz:
http://arxiv.org/abs/2406.19658
Autor:
Oliveira, R. R. S.
In this paper, we determine the bound-state solutions for Dirac fermions with electric dipole moment (EDM) and position-dependent mass (PDM) in the presence of a radial magnetic field generated by magnetic monopoles. To achieve this, we work with the
Externí odkaz:
http://arxiv.org/abs/2405.16300
Autor:
Oliveira, R. R. S.
In this paper, we study the relativistic energy spectrum for Dirac fermions under rainbow gravity effects in the $(3+1)$-dimensional Bonnor-Melvin-Lambda spacetime, where we work with the curved Dirac equation in cylindrical coordinates. Using the te
Externí odkaz:
http://arxiv.org/abs/2405.12449
Autor:
Oliveira, R. R. S.
Publikováno v:
Class. Quantum Grav. 41, 175017 (2024)
In this paper, we determine the relativistic and nonrelativistic energy levels for Dirac fermions in a spinning conical G\"odel-type spacetime in $(2+1)$-dimensions, where we work with the curved Dirac equation in polar coordinates and we use the tet
Externí odkaz:
http://arxiv.org/abs/2405.11334