Artigos  Física e Química  FEG
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Parity singlets and doublets of massive spin3 particles in D = 2 + 1 via Noether gauge embedding
(European Physical Journal Plus, 2019) [Artigo]Here we demonstrate that the sixthorder (in derivatives) spin3 selfdual model can be obtained from the fifthorder selfdual model via a Noether Gauge Embedding (NGE) of longitudinal Weyl transformations η( μ ν∂α )Φ. ... 
Gamified experimental physics classes: A promising active learning methodology for higher education
(European Journal of Physics, 2019) [Artigo]Gamification is defined as the use of game design elements in a nongame context. In higher education, gamification is a methodology intending to motivate students to acquire academical knowledge and soft skills, while ... 
De Sitter and bounce solutions from anisotropy in extended gravity cosmology
(Modern Physics Letters A, 2019) [Artigo]We investigate the consequences of incepting the Bianchi type I metric in the f(R,T) gravity theory field equations. We particularly derive solutions for a matterdominated universe. From such a scenario, it is possible ... 
Cold Atmospheric Pressure Plasma Jet Reduces Trichophyton rubrum Adherence and Infection Capacity
(Mycopathologia, 2019) [Artigo]This study aimed to evaluate the effects of cold atmospheric pressure plasma (CAPP) jet on Trichophyton rubrum growth, germination and adherence to nail. The effects of plasma jet on T. rubrum conidia germination and on ... 
Galaxy cluster SunyaevZel'dovich effect scalingrelation and type Ia supernova observations as a test for the cosmic distance duality relation
(Journal of Cosmology and Astroparticle Physics, 2019) [Artigo]In this paper, we propose a new test to the cosmic distance duality relation (CDDR), DL=DA(1+z)2, where DL and DA are the luminosity and angular diameter distances, respectively. The data used correspond to 61 Type Ia ... 
An Alternative Approach Concerning Elko Spinors and the Hidden Unitarity
(Advances in Applied Clifford Algebras, 2019) [Artigo]In this theoretical communication we look towards understand the underlying phenomenology concerning the Elko spinors within VSR theory. The program to be accomplished here start when we define the eigenspinors of the ... 
Erratum to: Type4 spinors: transmuting from Elko to singlehelicity spinors (The European Physical Journal C, (2019), 79, 4, (308)
(European Physical Journal C, 2019) [Errata]The last coAuthor’s name in the original manuscript is not correct. 
An unified cosmological evolution driven by a mass dimension one fermionic field
(European Physical Journal C, 2019) [Artigo]An unified cosmological model for an Universe filled with a mass dimension one (MDO) fermionic field plus the standard matter fields is considered. After a primordial quantum fluctuation the field slowly rolls down to the ... 
Exact solution for flat scaleinvariant cosmology
(Revista Mexicana de Astronomia y Astrofisica, 2019) [Artigo]An exact solution for the spatially flat scaleinvariant cosmology, recently proposed by Maeder (2017a) is deduced. No deviation from the numerical solution was detected. The exact solution yields transparency for the ... 
Proper treatment of scalar and vector exponential potentials in the KleinGordon equation: Scattering and bound states
(European Physical Journal Plus, 2019) [Artigo]We point out a misleading treatment in the literature regarding boundstate solutions for the swave KleinGordon equation with exponential scalar and vector potentials. Following the appropriate procedure for an arbitrary ... 
Surface modifications by both anodic oxidation and ion beam implantation on electropolished titanium substrates
(Applied Surface Science, 2019) [Artigo]The purpose of this work is to investigate the superficial induced characteristics on titanium surface by anodic oxidation and ion beam implantation, i.e. two surface modification technologies, by focusing on variations ... 
Higher order derivative operators as quantum corrections
(Nuclear Physics B, 2019) [Artigo]In this paper we propose a nonminimal, and ghost free, coupling between the gauge field and the fermionic one from which we obtain, perturbatively, terms with higher order derivatives as quantum corrections to the photon ... 
Comment on Effective of the qdeformed pseudoscalar magnetic field on the charge carriers in graphene [J. Math. Phys. 57, 082105 (2016)]
(Journal of Mathematical Physics, 2019) [Resenha]We point out a misleading treatment in a recent paper published in this journal [M. Eshgi and H. Mehraban, J. Math. Phys. 57, 082105 (2016)] concerning solutions for the twodimensional DiracWeyl equation with a qdeformed ... 
Field Sources in a CPTEven LorentzViolation Maxwell Electrodynamics
(Brazilian Journal of Physics, 2019) [Artigo]This paper is dedicated to the study of interactions between external sources for the electromagnetic field in a model which exhibits Lorentzsymmetry breaking. We investigate such interactions in the CPTeven photon sector ... 
Partition function for a mass dimension one fermionic field and the dark matter halo of galaxies
(Modern Physics Letters A, 2019) [Artigo]This work studies the finite temperature effects of a mass dimension one fermionic field, sometimes called Elko field. The equilibrium partition function was calculated by means of the imaginary time formalism and the ... 
The restricted InomataMcKinley spinorplane, homotopic deformations and the Lounesto classification
(Journal of Mathematical Physics, 2019) [Artigo]We define a twodimensional space called the spinorplane, where all spinors that can be decomposed in terms of Restricted InomataMcKinley (RIM) spinors reside, and describe some of its properties. Some interesting results ... 
Type4 spinors: transmuting from Elko to singlehelicity spinors
(European Physical Journal C, 2019) [Artigo]In this communication we briefly report an unexpected theoretical discovery which emerge from the mapping of Elko massdimensionone spinors into single helicity spinors. Such procedure unveils a class of spinor which is ... 
A General Method for Transforming Nonphysical Configurations in BPS States
(Advances in High Energy Physics, 2019) [Artigo]In this work, we apply the socalled BPS method in order to obtain topological defects for a complex scalar field Lagrangian introduced by Trullinger and Subbaswamy. The BPS approach led us to compute new analytical solutions ... 
Topology of the Magnetic Field and Resistivity of a Compact Torus Generated in a Mirrorless Theta Pinch
(Brazilian Journal of Physics, 2019) [Artigo]The mapping of the magnetic field and analysis of the plasma resistivity were used to study the change of magnetic field topology during the formation of a reversed field configuration. Using a theta pinch with straight ... 
Note on massless and partially massless spin2 particles in a curved background via a nonsymmetric tensor
(Physical Review D, 2019) [Artigo]In the last few years, we have seen an increase interest on gravitational waves due to recent and striking experimental results confirming Einstein's general relativity once more. From the field theory point of view, gravity ...