Analytical study of kinklike structures with polynomial tails

D Bazeia, R Menezes, DC Moreira - Journal of Physics …, 2018 - iopscience.iop.org
This work deals with models described by a single real scalar field in two-dimensional
spacetime. The aim is to propose potentials that support massless minima and investigate …

Quasinormal modes in kink excitations and kink–antikink interactions: a toy model

JGF Campos, A Mohammadi - The European Physical Journal C, 2020 - Springer
We study excitations and collisions of kinks in a scalar field theory where the potential has
two minima with Z_2 Z 2 symmetry. The field potential is designed to create a square well …

Configurational entropy of generalized sine–Gordon-type models

W Barreto, A Herrera–Aguilar, R da Rocha - Annals of Physics, 2022 - Elsevier
A family of deformed models of the sine–Gordon-type can be generated by twisting the sine–
Gordon model. As a particular case, the 3-sine–Gordon model is here addressed, whose …

Fermion bound states in geometrically deformed backgrounds

D Bazeia, A Mohammadi, DC Moreira - Chinese Physics C, 2019 - iopscience.iop.org
This work deals with the behavior of fermions in the background of kinklike structures in the
two-dimensional spacetime. The kinklike structures appear from bosonic scalar field models …

[HTML][HTML] Braneworlds in bumblebee gravity

MA Marques, R Menezes, AY Petrov, PJ Porfírio - Nuclear Physics B, 2023 - Elsevier
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 …

First-order formalism for thick branes in modified gravity with Lagrange multiplier

D Bazeia, DA Ferreira, DC Moreira - Europhysics Letters, 2020 - iopscience.iop.org
This work discusses the construction of braneworld solutions in modified gravity with
Lagrange multipliers. We examine the general aspects of the model and present a first-order …

Casimir energy through transfer operators for sine-Gordon backgrounds

L Santamaría-Sanz - Progress of Theoretical and Experimental …, 2024 - academic.oup.com
The quantum vacuum interaction energy between a pair of semitransparent two-dimensional
plates represented by Dirac delta potentials and its first derivative, embedded in the …

BPS states for scalar field theories based on 2 and (4) algebras

G Luchini, T Tassis - Journal of High Energy Physics, 2020 - Springer
JHEP05(2020)011 Page 1 JHEP05(2020)011 Published for SISSA by Springer Received:
September 13, 2019 Revised: February 20, 2020 Accepted: April 15, 2020 Published: May 5 …

Vortices in vacuumless systems

MA Marques - Advances in High Energy Physics, 2019 - Wiley Online Library
We investigate the presence of vortex solutions in potentials without vacuum state. The study
is conducted considering Maxwell and Chern‐Simons dynamics. Also, we use a first‐order …

Aspectos de estruturas topológicas em baixas dimensões

FCE Lima - 2023 - repositorio.ufc.br
Antes de começar a discutir o tema e o propósito desta tese, deixo abaixo o seguinte trecho
da música Trem-Bala como reflexão:“Não é sobre chegar no topo do mundo e saber que …