37 citations · 229 across the 28 of their papers we have counts for
15 papers · 1 filter
Soft breaking of the symmetry in the theory
F. C. E. Lima, C. A. S. Almeida
We consider a two-dimensional scalar field theory that modifies the standard model by introducing a smooth breaking of translational invariance through a hyperbolic generaliz…
Mitigating the information degradation in a massive Unruh-DeWitt theory
P. H. M. Barros, F. C. E. Lima, C. A. S. Almeida +1
We investigated the influence of the massive scalar field on the information degradation concerning the Unruh-DeWitt (UDW) detectors. In this conjecture, we adopted a system with a…
Kinks and double-kinks in generalized -and -models
F. C. E. Lima, R. Casana, C. A. S. Almeida
Examining the and models within a two-dimensional framework in the flat spacetime and embracing a theory with unconventional kinetic terms, one investigates the eme…
Physical aspects of the deformation of kinks in a generalized model
F. C. E. Lima, C. A. S. Almeida, Rodolfo Casana
We study a generalized model that gives rise to BPS kink/antikink configurations with compacton-like profiles. One observes that the positive parameter controlling the genera…
Topological solitons in the sigma-cuscuton model
F. C. E. Lima, C. A. S. Almeida
Building a multi-field theory with canonical and non-canonical contributions, one studies the topological solitons of the O(3)-sigma model. We propose a model constituted by the O(…
New class of solutions in the non-minimal O(3)-sigma model
F. C. E. Lima, C. A. S. Almeida
For the study of topological vortices with non-minimal coupling, we built a kind of non-canonical O(3)-sigma model, with a Maxwell term modified by a dielectric function. Through t…
Exponentially generalized vortex
F. C. E. Lima, C. A. S. Almeida
In this work, we propose an exponentially generalized Abelian model. We investigated the presence of vortex structures in models coupled to Maxwell and Chern-Simons fields. We chos…
Differential configurational complexity and phase transitions of the BPS solutions in the O(3)-sigma model
F. C. E. Lima, C. A. S. Almeida
Using a spherically symmetric ansatz, we show that the Chern-Simons O(3)-sigma model with a logarithmic potential admits topological solutions. This result is quite interesting sin…
Phase transitions in the logarithmic Maxwell O(3)-sigma model
F. C. E. Lima, C. A. S. Almeida
We investigate the presence of topological structures and multiple phase transitions in the O(3)-sigma model with the gauge field governed by Maxwell's term and subject to a so-cal…
Configurational Entropy and braneworlds in f(T,B) gravity
A. R. P. Moreira, F. C. E. Lima, C. A. S. Almeida
The thick brane scenario built on the f(T,B) teleparallel gravity theory was considered for the study of phase transitions, internal structures, and new classes of solutions in a m…
Topological structures in a non-canonical perturbative dynamics of a cuscuton-like model
F. C. E. Lima, A. Yu. Petrov, C. A. S. Almeida
In this work, a possible description for quantum dynamics of the cuscuton within the sigma-model approach is presented. Lower order perturbative corrections and the structure of di…
Vortex solutions in nonpolynomial scalar QED
F. C. E. Lima, A. Yu. Petrov, C. A. S. Almeida
In order to investigate possible topological vortex structures in generalized models, we developed a perturbative generation approach for scalar-vector theories. We demonstrate exp…
Thick brane in f(T,B) gravity
A. R. P. Moreira, J. E. G. Silva, F. C. E. Lima +1
In this paper, we explore the five-dimensional f(T,B) teleparallel modified gravity with f_1(T,B)=T+k_1B^{n_1} and f_2(T,B)=B+k_2T^{n_2} in the brane scenario. Asymptotically, the…
New class of solutions of a generalized -sigma Chern-Simons model
F. C. E. Lima, D. M. Dantas, C. A. S. Almeida
In this work, we investigated the existence of compacton-like configuration in the O(3)-sigma model. We consider a minimally coupled O(3)-sigma model with a gauge field governed by…
Continuously transforming kinks into compactons in the O(3)-sigma model
F. C. E. Lima, D. A. Gomes, C. A. S. Almeida
In this work, we investigate the solutions of vortices in the O(3)-sigma model with the gauge field governed by the Chern-Simons term and subject to a hyperbolic self-dual potentia…