Article
Astronomy & Astrophysics
Yi Zhong, Yun-Zhi Du
Summary: In this paper, the localization of the five-dimensional U(1) gauge field coupled with a background scalar potential on symmetric and asymmetric degenerate Bloch branes is studied. The Lagrangian of the gauge field is decomposed into its vector and scalar components, and it is found that the effective potential exhibits volcano-like shape for the vector field. Massless vector field and a set of massive KK resonances are obtained. For the scalar part, their massless modes are coupled, while two sets of massive scalar KK modes are independent. The asymmetric parameter has different effects on the localization of scalar modes for the two types of Bloch brane solutions.
Article
Physics, Particles & Fields
D. Bazeia, D. A. Ferreira, M. A. Marques
Summary: This study investigates thick branes in a single extra dimension modeled by a two-field configuration, including the cuscuton to control one of the fields' dynamics. Results show rich internal structure in branes, with novel geometry behavior governed by the parameter controlling the strength of the cuscuton term. The study also reveals significant modifications in the warp factor and energy density of the branes.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Multidisciplinary
Xiang-Nan Zhou, Wei-Qi Guo
Summary: This paper investigates the localization of a five-dimensional gravitino field on a thick brane with non-minimal coupling. By choosing an appropriate gauge condition, the equations for the Kaluza-Klein (KK) modes of gravitino are obtained. Compared to the case without non-minimal coupling, the inclusion of non-minimal coupling allows for the localization of both the zero mode and massive KK modes of a five-dimensional free massless gravitino field on the brane. The study also finds that the non-minimal coupling modifies the mass spectrum of the KK modes and offers more possibilities for localization.
Article
Physics, Particles & Fields
Hirotaka Hayashi, Tomoki Nosaka, Tadashi Okazaki
Summary: In this study, we explore various conjectural dual descriptions of a stack of M2-branes in M-theory and propose several new dualities of the M2-brane SCFTs by analyzing flavored supersymmetric indices. The mappings of local operators, Coulomb, Higgs, and mixed branch operators as well as global symmetries under the dualities are obtained from the precise matching of the indices. We also find closed form expressions and more useful expressions for certain indices, which are significant for further research.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Andreas Gustavsson
Summary: We derive a Lagrangian for a lightlike dimensional reduction of the nonabelian M5 brane theory in six dimension, assuming the six-manifold possesses at least one conformal Killing spinor and two commuting lightlike Killing vector fields. The reduction is performed along one of these lightlike directions.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Multidisciplinary Sciences
Ziqi Chen, Chun'e Fu, Xiaoyu Zhang, Chen Yang, Li Zhao
Summary: This paper investigates gauge invariance in a bulk massless q-form field on a p-brane with codimension two, utilizing a general Kaluza-Klein (KK) decomposition. The KK decomposition analysis reveals four distinct KK modes and eight Schrodinger-like equations. The KK decomposition process also gives rise to four dualities on the p-brane, playing a significant role in maintaining the equivalence of bulk dual fields during dimensional reduction.
Article
Physics, Particles & Fields
Igor Bandos, Kurt Lechner, Dmitri Sorokin, Paul K. Townsend
Summary: This article uses the Hamiltonian formulation for nonlinear chiral 2-form electrodynamics in six-dimensional Minkowski spacetime to demonstrate that small-amplitude plane-wave perturbations of a generic uniform constant 'magnetic' background exhibit trirefringence. The dispersion relations for all three independent wave-polarisations are distinct. The unique coincidence of all three dispersion relations is observed in the chiral 2-form theory on the worldvolume of the M5-brane of M-theory, as waves propagate in a planar M5-M2-M2 bound-state preserving 16 supersymmetries. Similar results are also implied for nonlinear electrodynamics in five and four dimensions in Minkowski spacetime.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Cheng-Chen Li, Zheng-Quan Cui, Tao-Tao Sui, Yu-Xiao Liu
Summary: In this paper, the effective action of a self-interacting scalar field on a brane in the five-dimensional thick braneworld scenario is investigated. The analytical mass spectra and wave functions of the Kaluza-Klein (KK) modes are obtained, and the effective coupling constant, cross section, and decay rate of the KK particles are related to the fundamental coupling in five dimensions and the new physics energy scale. It is found that KK particles with higher modes have longer lifetime and almost do not interact with ordinary matter on the brane if their mode numbers are large enough, making them potential candidates for dark matter.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
Shi Cheng
Summary: This paper discusses 3D brane webs and effective Chern-Simons levels for 3D N=2 gauge theories. It is found that introducing real masses for chiral multiplets leads to equivalent brane webs that can be related by flipping positions of D5-branes. These flips are interpreted as ST-transformations for chiral multiplets, which can turn abelian theories into dual theories with mixed Chern-Simons levels. Each brane web corresponds to a quiver matrix C-ij encoding DT-invariants. The paper also discusses ST-transformations of holomorphic blocks and the movement of flavor D5-branes, which leads to double-layer brane webs and fiber-base duality.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Mohammad Akhond, Federico Carta
Summary: We explore the Higgs branch of 5d fixed points engineered using brane webs with an O7(+)-plane, proposing rules to extract magnetic quivers and calculating the Coulomb branch Hilbert series of these quivers. In some cases, alternative magnetic quivers can be obtained using ordinary brane webs or brane webs with an O5-plane, with a matching Hilbert series found.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Optics
Helene Wetter, Zlata Fedorova, Stefan Linden
Summary: Using evanescently coupled waveguides, we investigated the propagation of surface plasmon polaritons and observed plasmonic analogs of Bloch oscillations and the Wannier-Stark ladder.
Article
Physics, Multidisciplinary
A. R. P. Moreira, F. M. Belchior, R. V. Maluf, C. A. S. Almeida
Summary: This paper investigates the influence of torsion on bulk fields in a thick brane with codimension two in f(T) modified teleparallel gravity. The localization of gauge field zero mode is supported by the brane without the need for an extra coupling. However, Kalb-Ramond and fermionic fields require appropriate couplings. Therefore, a geometrical coupling based on results in 5D thick brane in modified teleparallel gravities is proposed. The Kalb-Ramond field is coupled to torsion scalar T through a gauge-invariant interaction, and for fermionic fields, the Dirac fermions and gravitino are studied with a derivative geometrical coupling. Massive and resonant modes are obtained for all fields using a Schodinger-like approach.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Particles & Fields
Anajak Phonchantuek, Pichet Vanichchapongjaroen
Summary: This paper presents the double dimensional reduction of the complete M5-brane action in the Sen formalism. By dualizing and integrating out certain field components, the complete D4-brane or dual D4-brane action can be obtained. The duality between the D4-brane and dual D4-brane actions can be understood as the swapping of roles between components of the pseudo-2-form field in the Sen formalism.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Materials Science, Multidisciplinary
Federico Balducci, Andrea Gambassi, Alessio Lerose, Antonello Scardicchio, Carlo Vanoni
Summary: In a recent paper, the authors demonstrate a robust form of ergodicity breaking in the dynamics of interfaces in the symmetry-broken phase of the two-dimensional ferromagnetic quantum Ising model. They discuss two classes of initial states on the square lattice and provide a detailed analysis of the evolution of these interfaces. The authors also present evidence supporting the persistence of nonergodicity and highlight the presence of a timescale for the decay of a region of large linear size.
Article
Physics, Particles & Fields
M. Beccaria, A. Cabo-Bizet
Summary: This paper studies the Schur index of N = 4 U(N) SYM theory in 4d and its holographic giant graviton-type expansion at finite N. The world-volume brane superconformal index is computed using a recently proposed definition of the gauge holonomy integral as a multivariate residue. The brane expansion and its relation to previous giant graviton-type representations of the Schur index are clarified.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Multidisciplinary
F. C. E. Lima, C. A. S. Almeida
Summary: In this work, an exponentially generalized Abelian model is proposed to investigate vortex structures in models coupled to Maxwell and Chern-Simons fields. The dynamics of the complex scalar field in models coupled separately to the Maxwell term and the Chern-Simons term are analyzed using Bogomol'nyi equations. It is found that scalar field solutions generate degenerate minimum energy configurations in Maxwell's case and degenerate solutions in the Chern-Simons case.
Article
Astronomy & Astrophysics
J. E. G. Silva, L. J. S. Sousa, W. T. Cruz, C. A. S. Almeida
Summary: This paper studies the properties of gravity and bulk fields living in a torsion warped braneworld. The authors find a new isotropic thick brane geometry and analyze the features of bosonic and fermionic fields in this scenario. The nonminimal coupling between the fields and the geometry, provided by the background vector, leads to modifications in the Kaluza-Klein states.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2022)
Article
Astronomy & Astrophysics
A. R. P. Moreira, F. C. E. Lima, C. A. S. Almeida
Summary: The thick brane scenario in the f(T, B) teleparallel gravity theory is studied for phase transitions, internal structures, and new classes of solutions. When brane splitting occurs, new domain walls appear, leading to internal structures in the model. This preliminary result influences the matter field profile and multiple phase transitions can be identified for certain parameter values. The Differential Configurational Entropy (DCE) is used to analyze these phase transitions and select the most stable solutions.
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2022)
Article
Astronomy & Astrophysics
F. C. E. Lima, C. A. S. Almeida
Summary: This study investigates the possibility of topological vortices with non-minimal coupling by constructing a non-canonical O(3)-sigma model. The research reveals the existence of known kink solutions in the topological sector of the real scalar field, as well as the emergence of solitary wave structures similar to those derived from a KdV-like theory in the nonminimal sector of the pure O(3)-sigma model. Additionally, the vortex solutions in the mixed model exhibit a step function profile, and the interaction with the scalar field leads to nonphysical vortice structures in the field solutions of the O(3)-sigma model.
Article
Physics, Multidisciplinary
Collins Okon Edet, Francisco Cleiton E. Lima, Carlos Alberto S. Almeida, Norshamsuri Ali, Muhammad Asjad
Summary: The study investigates quantum information using the Aharanov-Bohm (AB) ring in Yukawa mechanics in curved space. Shannon entropy is obtained through the eigenfunctions of the system, allowing exploration of quantum information in position and reciprocal space. The study also discusses the influence of magnetic field, AB flux, and topological defect on quantum states and information entropy.
Article
Astronomy & Astrophysics
A. R. P. Moreira, F. C. E. Lima, C. A. S. Almeida
Summary: In this study, we investigate a five-dimensional thick brane in the teleparallel f(T) gravity scenario. This scenario is interesting as it can explain inflation, radiation, and dark matter phenomena under certain conditions. We assume a polynomial profile of the function f(T) for convenience, and some polynomial profiles can produce brane splitting. Geometrically contracted matter field configurations are obtained for functions f(T) with this capability. The stability of the brane is analyzed using Configurational Entropy (CE), which helps to identify the best profile of the function f(T).
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
(2023)
Article
Nanoscience & Nanotechnology
F. C. E. Lima, L. N. Monteiro, C. A. S. Almeida
Summary: In this work, we study the Dirac equation in the position-dependent mass (PDM) scenario, investigating the quantum dynamics of non-Hermitian fermionic particles with effective mass assuming flat spacetime. We introduce a complex potential to achieve PT symmetry and explore the resulting effective potential purely dependent on mass distribution. The non-relativistic limit and specific cases of mass distribution are also examined, revealing intriguing phenomena such as the emergence of bound states and the behavior of fermions as free particles with positive-defined energy.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Physics, Multidisciplinary
F. C. E. Lima, A. R. P. Moreira, C. A. S. Almeida, C. O. Edet, N. Ali
Summary: In this research article, the quantum information entropy of a particle trapped by the Aharonov-Bohm-type field is investigated using Shannon's formalism. To study quantum information, the eigenstates of the quantum system, i.e. the wave functions and energies of the quantum states, need to be investigated. It is assumed that the particle is confined in a cylindrical box in the presence of Aharonov-Bohm-type effect due to dislocation defect. The analysis of quantum information entropy reveals that the dislocation influences the eigenstates and the quantum information of the system.
Article
Physics, Multidisciplinary
F. C. E. Lima, A. R. P. Moreira, C. A. S. Almeida
Summary: This study investigates the influence of matter field and gauge field on the metric functions of the AdS(3) spacetime in the Maxwell-Higgs model. The appearance of black hole solutions is noticed with the presence of a matter field with a solitonic profile that can adjust the field variable. The compactification of the matter field affects the metric functions while not changing the structure of the magnetic black hole vortex horizon.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Multidisciplinary
Francisco Estevao E. Lima, Carlos Alberto S. Almeida
Summary: This study investigates the kink-like solutions of the matter field in a 2D dilaton gravity scenario, analyzing their stability and topological structures. The results show that the nature of the structures in the system needs to be confirmed through a differential configurational complexity (DCC) analysis.
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
A. R. P. Moreira, F. M. Belchior, R. V. Maluf, C. A. S. Almeida
Summary: This paper investigates the influence of torsion on bulk fields in a thick brane with codimension two in f(T) modified teleparallel gravity. The localization of gauge field zero mode is supported by the brane without the need for an extra coupling. However, Kalb-Ramond and fermionic fields require appropriate couplings. Therefore, a geometrical coupling based on results in 5D thick brane in modified teleparallel gravities is proposed. The Kalb-Ramond field is coupled to torsion scalar T through a gauge-invariant interaction, and for fermionic fields, the Dirac fermions and gravitino are studied with a derivative geometrical coupling. Massive and resonant modes are obtained for all fields using a Schodinger-like approach.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Physics, Particles & Fields
A. R. P. Moreira, F. M. Belchior, R. V. Maluf, C. A. S. Almeida
Summary: This paper investigates the behavior of gauge vector and tensor fields on thick brane in f(T) gravity. The thick brane does not provide a normalizable zero mode for gauge and Kalb-Ramond fields. To solve this, two types of gauge-invariant couplings are proposed. Resonant modes are also studied to understand the massive spectrum of fields.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
F. C. E. Lima, C. A. S. Almeida
Summary: In this study, a multi-field theory with canonical and non-canonical contributions is built, and the topological solitons of the O(3)-sigma model are investigated. The results reveal that the solitons have an internal structure and ring-like profile, which are directly related to the contribution of the cuscuton-like term.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
C. A. S. Almeida, W. T. Cruz, R. Maluf, A. Yu Petrov, P. Porfirio
Summary: In this study, the higher-derivative massive gravity in D-dimensional space-time is investigated. The mass term is introduced by a 2-brane embedded in a 4D Minkowski spacetime. The effect of a resonance mass term from the DGP braneworld model is considered. Additionally, the gravitational Chern-Simons and Ricci-Cotton terms are added to the model and the graviton propagator is evaluated using a basis of Barnes-Rivers spin projectors. The consistency of the model, dispersion relations, and causality and unitarity are discussed based on the obtained propagator.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
F. C. E. Lima, A. Yu Petrov, C. A. S. Almeida
Summary: In this work, a possible description for the quantum dynamics of cuscuton within the sigma-model approach is presented. Perturbative corrections and divergences are studied, followed by an investigation into the existence of topological structures in the cuscutonlike model. Numerical methods are used to find kinklike configurations and vortex solutions. The study shows the existence of localized energy and quantized magnetic flux in the topological sectors.
