Search Results - "Santos, J. R. L"

LIV effects on the quantum stochastic motion in an acoustic FRW-geometry by Anacleto, M. A., Bessa, C. H. G., Brito, F. A., Mateus, A. E., Passos, E., Santos, J. R. L.

“…It is well known in the literature that vacuum fluctuations can induce a random motion of particles which is sometimes called quantum Brownian motion or…”
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Cosmological scenarios from multiquintessence by Correa, R. A. C., Moraes, P. H. R. S., de Souza Dutra, A., Santos, J. R. L., de Paula, W.

“…In this work we derive and analyse cosmological scenarios coming from multi-component scalar field models. We consider a direct sum of a sine-Gordon with a Z2…”
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Building analytical three-field cosmological models by Santos, J. R. L., Moraes, P. H. R. S., Ferreira, D. A., Neta, D. C. Vilar

“…A difficult task to deal with is the analytical treatment of models composed of three real scalar fields, as their equations of motion are in general coupled…”
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Cosmology in the Universe with Distance Dependent Lorentz-Violating Background by Passos, E., Brito, F. A., Anacleto, M. A., Almeida, C. A. G., Santos, J. R. L.

“…We consider a cosmological setup with inflaton in the presence of a redshift dependent Lorentz-violating time-like background to address the inflationary…”
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A General Method for Transforming Nonphysical Configurations in BPS States by Correa, R. A. C., Winter, O. C., Dutra, A. de Souza, Santos, J. R. L.

“…In this work, we apply the so-called BPS method in order to obtain topological defects for a complex scalar field Lagrangian introduced by Trullinger and…”
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Multi-sine-Gordon models by Bazeia, D., Losano, L., Malbouisson, J. M. C., Santos, J. R. L.

“…This work deals with the presence of defect structures in generalized sine-Gordon models. The models are described by periodic potentials, with substructure…”
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Additive manufacturing models of fetuses built from three‐dimensional ultrasound, magnetic resonance imaging and computed tomography scan data by Werner, H., dos Santos, J. R. L., Fontes, R., Daltro, P., Gasparetto, E., Marchiori, E., Campbell, S.

“…Objective To generate physical fetal models using images obtained by three‐dimensional ultrasonography (3DUS), magnetic resonance imaging (MRI) and computed…”
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Virtual bronchoscopy in the fetus by Werner, H., Dos Santos, J. R. L., Fontes, R., Daltro, P., Gasparetto, E., Marchiori, E., Campbell, S.

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Inflation in f(R, T) gravity by Bhattacharjee, Snehasish, Santos, J. R. L., Moraes, P. H. R. S., Sahoo, P. K.

“…The article presents modeling of inflationary scenarios for the first time in the f ( R ,  T ) theory of gravity. We assume the f ( R ,  T ) functional form to…”
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Diffusive process under Lifshitz scaling and pandemic scenarios by Anacleto, M.A., Brito, F.A., de Queiroz, A.R., Passos, E., Santos, J.R.L.

“…We here propose to model active and cumulative cases data from COVID-19 by a continuous effective model based on a modified diffusion equation under Lifshitz…”
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New family of potentials with analytical twiston-like solutions by Santos, J. R. L., Borges, D. S. S., Moreira, I. O.

“…In this letter we present a new approach to find analytical twiston models. The effective two-field model was constructed by a non-trivial combination of two…”
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Two scalar field cosmology from coupled one-field models by Moraes, P. H. R. S., Santos, J. R. L.

“…One possible description for the current accelerated expansion of the Universe is quintessence dynamics. The basic idea of quintessence consists of analyzing…”
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A complete cosmological scenario from f(R,Tϕ) gravity theory by Moraes, P. H. R. S., Santos, J. R. L.

“…Recent elaborated by Harko et al., the f ( R ,  T ) theories of gravity allow one to contemplate an optimistic alternative to dark energy, for which R and T…”
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A complete cosmological scenario from [Formula omitted] gravity theory by Moraes, P. H. R. S, Santos, J. R. L

“…Recent elaborated by Harko et al., the f(R, T) theories of gravity allow one to contemplate an optimistic alternative to dark energy, for which R and T stand…”
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Constraining f(Q,T) gravity from energy conditions by Arora, Simran, Santos, J.R.L., Sahoo, P.K.

“…We are living in a golden age for experimental cosmology. New experiments with high accuracy precision are been used to constrain proposals of several theories…”
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LIV effects on the quantum stochastic motion in an acoustic FRW-geometry by Anacleto, M. A, Bessa, C. H. G, Brito, F. A, Mateus, A. E, Passos, E, Santos, J. R. L

“…It is well known in the literature that vacuum fluctuations can induce a random motion of particles which is sometimes called quantum Brownian motion or…”
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Cosmology from a running vacuum model driven by a scalar field by Santos, J. R. L, Moraes, P. H. R. S

“…The possibility that the vacuum energy density $\rho_\Lambda$ is, indeed, varying in time, has been investigated lately from the running vacuum models…”
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Harmonic oscillators from displacement operators and thermodynamics by Brito, F. A, Santos, F. F, Santos, J. R. L

“…Physica A, 2018 In this investigation, the displacement operator is revisited. We established a connection between the Hermitian version of this operator with…”
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Lorentz-violating dimension-five operator contribution to the black body radiation by Anacleto, M.A., Brito, F.A., Maciel, E., Mohammadi, A., Passos, E., Santos, W.O., Santos, J.R.L.

“…We investigate the thermodynamics of a photon gas in an effective field theory model that describes Lorentz violations through dimension-five operators and…”
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New family of potentials with analytical twiston-like solutions by Santos, J. R. L, Borges, D. S. S, Moreira, I. O

“…Europhysics Letters, 2018 In this letter we present a new approach to find analytical twiston models. The effective two-field model was constructed by a…”
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