Zobrazeno 1 - 10
of 4 418
pro vyhledávání: '"Marqués M"'
This work deals with systems of two real scalar fields coupled to impurity functions, meant to model inhomogeneities often encountered in real physical applications. We investigate the theoretical properties of these systems and some of the consequen
Externí odkaz:
http://arxiv.org/abs/2409.03603
We investigate a class of scalar field models which engender kink-like solutions in the presence of polynomial potentials that allows for modifications of the tails of the localized configurations. We introduce a parameter in the potential that contr
Externí odkaz:
http://arxiv.org/abs/2409.01961
Publikováno v:
Nucl. Phys. B 1007 (2024) 116662
In this work, we investigate braneworld models generated by scalar fields in which one field has a split kink profile, in which a kink separates into two kinklike configurations. Our analysis covers models with two and three fields, examining the beh
Externí odkaz:
http://arxiv.org/abs/2408.12562
In this work, we investigate probe scalar field models preserving covariance on fixed, static background geometries that present hyperscaling violation properties. We develop a first-order framework that rises from restrictions on the dynamical and h
Externí odkaz:
http://arxiv.org/abs/2401.14082
Publikováno v:
Eur.Phys.J.C 84 (2024) 6
In this work, we investigate the presence of thick branes modeled by a single scalar field with Born-Infeld-like dynamics. We consider the 4-dimensional metric being Minkowski, de Sitter or anti-de Sitter. We obtain the field equations and the condit
Externí odkaz:
http://arxiv.org/abs/2312.12249
Publikováno v:
EPJC 84 (2024) 180
In this work, radially symmetric kink-like solutions in the presence of impurities are investigated for both flat and curved $D+1$ spacetimes, with geometry generated by a rotationally invariant background metric. We have examined the constraints pla
Externí odkaz:
http://arxiv.org/abs/2311.14661
Publikováno v:
Physics Letters B 846 (2023) 138262
We investigate the presence of localized structures for relativistic scalar fields coupled to impurities in arbitrary spatial dimensions. Such systems present spatial inhomogeneity, realized through the inclusion of explicit coordinate dependence in
Externí odkaz:
http://arxiv.org/abs/2310.09862
Autor:
Marques, M. A., Menezes, R.
Publikováno v:
Chaos, Solitons and Fractals 181 (2024) 114730
In this paper, we investigate multifield models in which the two-field BNRT model is coupled to a third field through mediator functions in the Lagrangian density. To conduct the investigation, we obtain the equations of motion and develop a first-or
Externí odkaz:
http://arxiv.org/abs/2310.07556
Publikováno v:
Eur. Phys. J. Plus 138 (2023) 735
We describe a procedure that contributes to modify the asymptotic behavior of kinks in a model described by two real scalar fields. The investigation takes advantage of a first order formalism based on energy minimization to unveil how to modify the
Externí odkaz:
http://arxiv.org/abs/2308.08304
Publikováno v:
Nucl. Phys. B996, 116374 (2023)
We investigate thick-brane solutions within the five-dimensional bumblebee gravity in the presence of a real scalar field. Specifically, we implement the Lorentz symmetry breaking scenario within this context and obtain brane-like structures. Since t
Externí odkaz:
http://arxiv.org/abs/2306.13069