Zobrazeno 1 - 10
of 951
pro vyhledávání: '"Andrade, I"'
In this work we investigate the presence of scalar field models supporting kink solutions with logarithmic tails, which we call super long-range structures. We first consider models with a single real scalar field and associate the long-range profile
Externí odkaz:
http://arxiv.org/abs/2410.21241
We investigate Maxwell-scalar models on radially symmetric spacetimes in which the gauge and scalar fields are coupled via the electric permittivity. We find the conditions that allow for the presence of minimum energy configurations. In this formali
Externí odkaz:
http://arxiv.org/abs/2409.07633
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
In this paper, we study in detail various solutions, especially kink ones, in different nonlocal scalar field theories, whose kinetic term is described by an arbitrary non-polynomial analytic function of the d'Alembertian operator, and the potential
Externí odkaz:
http://arxiv.org/abs/2407.21711
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
Autor:
Andrade, I., Menezes, R.
This work deals with the presence of localized structures in relativistic systems described by two real scalar fields in two-dimensional spacetime. We consider the usual two-field model with the inclusion of the cuscuton term, which couples the field
Externí odkaz:
http://arxiv.org/abs/2308.03738
Publikováno v:
EPL 133 (2021) 31002
This paper deals with planar vortices in a generalized model that presents a global factor which depends on the scalar field in the Nielsen-Olesen Lagrange density. We show that the system supports a first order framework. Contrary to what occurs wit
Externí odkaz:
http://arxiv.org/abs/2306.12542
Publikováno v:
Chaos, Solitons and Fractals 176 (2023) 114171
In this work, we investigate a Maxwell-scalar model that couples the scalar and gauge fields through the electric permittivity and another model, in which the scalar field lives in the presence of impurity. By considering a single spatial dimension,
Externí odkaz:
http://arxiv.org/abs/2305.06975
Publikováno v:
Chin. Phys. C 46 (2022) 125102
We investigate generalized Jackiw-Teitelboim gravity, coupling the dilaton field with two scalar matter fields. We obtain the equations of motion of the fields and investigate the linear perturbation of the solutions in general. We study two specific
Externí odkaz:
http://arxiv.org/abs/2208.04210