Light composite Higgs boson from the normalized Bethe-Salpeter equation

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Kramers equation for a charged Brownian particle: the exact solution

We report the exact fundamental solution for Kramers equation associated to a Brownian gas of charged particles, under the influence of homogeneous (spatially uniform) otherwise arbitrary, external mechanical, electrical and magnetic fields. Some applications are presented, namely the hydrothermodynamical picture for Brownian motion in the long-time regime. (c) 2005 Elsevier B.V. All rights reserved.

Gravitomagnetic moments of the fundamental fields

The quadratic form of the Dirac equation in a Riemann space-time yields a gravitational gyromagnetic ratio κ(S) = 2 for the interaction of a Dirac spinor with curvature. A gravitational gyromagnetic ratio κ(S) = 1 is also found for the interaction of a vector field with curvature. It is shown that the Dirac equation in a curved background can be obtained as the square-root of the corresponding vector field equation only if the gravitational gyromagnetic ratios are properly taken into account.

A simple derivation of the Lindblad equation

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dynamical chiral symmetry breaking: the fermionic gap equation with dynamical gluon mass and confinement

Pós-graduação em Física - IFT

Chiral transition of fundamental and adjoint quarks

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Um estudo sobre bullying entre escolares do ensino fundamental

This research, of quali-quatitative nature. had the aim of characterizing the phenomenon of bullying in two state public schools of Presidente Prudente-SP through the use of questionnaires applied to two hundred eighty-three Students of 5(th) and 8(th) grades. It was taken into consideration frequency. gender. most common places and ages of bullying prevalence. students' place of living. effects on the behavior and the feelings of the victim, as well as the opinion of the participants about facing the problem. The questionnaire used was based on studies of Elliot (1992) and Olweus (1991). The results were likely to characterize the dimensions of bullying in the studied reality, what allowed Lis to confirm its presence in the school environment. requesting more attention from the education professionals concerning the phenomenon.

Time-periodic perturbation of a Lienard equation with an unbounded homoclinic loop

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Experimental study of the conventional equation to determine a plate's moment of inertia

In this work, we describe an experimental setup in which an electric current is used to determine the angular velocity attained by a plate rotating around a shaft in response to a torque applied for a given period. Based on this information, we show how the moment of inertia of a plate can be determined using a procedure that differs considerably from the ones most commonly used, which generally involve time measurements. Some experimental results are also presented which allow one to determine parameters such as the exponents and constant of the conventional equation of a plate's moment of inertia.

On the Generalized Mittag-Leffler Function and its Application in a Fractional Telegraph Equation

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

On anomalous diffusion and the fractional generalized Langevin equation for a harmonic oscillator

The fractional generalized Langevin equation (FGLE) is proposed to discuss the anomalous diffusive behavior of a harmonic oscillator driven by a two-parameter Mittag-Leffler noise. The solution of this FGLE is discussed by means of the Laplace transform methodology and the kernels are presented in terms of the three-parameter Mittag-Leffler functions. Recent results associated with a generalized Langevin equation are recovered.

Estresse entre professoras do ensino fundamental de escolas públicas estaduais

O artigo relata pesquisa que visou, entre outros objetivos, identificar a presença do estresse, a sintomatologia e as fases apresentadas pelos professores de 1ª a 4ª série do Ensino Fundamental atuantes em escolas públicas estaduais de uma cidade do Interior de São Paulo. Participaram do estudo 175 professores, perfazendo, aproximadamente, 70% dos profissionais de Ensino Básico I (PEB-I) em atuação no município. Para obtenção dos objetivos foram utilizados dois instrumentos de coleta de dados: o ISSL (Inventário de Sintomas de Estresse) e um questionário para caracterizar a população pesquisada. A pesquisa revelou que 56,6% dos professores estão experimentando estresse, cujos principais sintomas presentes são: sensação de desgaste físico constante, cansaço constante, tensão muscular, problemas com a memória, irritabilidade excessiva, cansaço excessivo, angústia/ansiedade diária, pensar constantemente em um só assunto e irritabilidade sem causa aparente.

About the Use of the HdHr Algorithm Group in Integrating the Movement Equation with Nonlinear Terms

This work summarizes the HdHr group of Hermitian integration algorithms for dynamic structural analysis applications. It proposes a procedure for their use when nonlinear terms are present in the equilibrium equation. The simple pendulum problem is solved as a first example and the numerical results are discussed. Directions to be pursued in future research are also mentioned. Copyright (C) 2009 H.M. Bottura and A. C. Rigitano.

Some exact solutions of the Dirac equation

Exact analytic solutions are found to the Dirac equation for a combination of Lorentz scalar and vector Coulombic potentials with additional non-Coulombic parts. An appropriate linear combination of Lorentz scalar and vector non-Coulombic potentials, with the scalar part dominating, can be chosen to give exact analytic Dirac wave functions.

Exact closed-form solutions of the Dirac equation for a class of effective Morse potentials

Exact bounded solutions for a fermion subject to exponential scalar potential in 1 + 1 dimensions are found in closed form. We discuss the existence of zero modes which are related to the ultrarelativistic limit of the Dirac equation and are responsible for the induction of a fractional fermion number on the vacuum.