A novel type of correlation involving particle-antiparticle pairs was found out in the 1990’s. Currently known as squeezed or Back-to-Back Correlations (BBC), they should be present if the hadronic masses are modified in ...

This work is based on a Brazilian project that aims to promote the use of a semi-quantitative tool with students (11 - 18 years old) in topics about local environmental problems. The paper presents the VISQ program, a ...

Elliptic flow at RHIC is computed event by event with NeXSPheRIO. Reasonable agreement with experimental data on v2(h) and v2(pt) is obtained. Various effects are studied as well: equation of state (with or without critical ...

We build a complete supersymmetric version of a 3-3-1 gauge model using the superfield formalism. We point out that a discrete symmetry, similar to R symmetry in the minimal supersymmetric standard model, is possible to ...

We consider the supersymmetric extension of the 3-3-1 model with right-handed neutrinos.We study the mass spectra in the scalar and pseudoscalar sectors, and for a given set of the input parameters, we find that the ...

We build the complete supersymmetric version of a 3-4-1 gauge model using the super-eld formalism. We point out that a discrete symmetry, similar to the R-symmetry in the minimal supersymmetric standard model, is possible ...

Esse artigo analisa o uso da robótica educacional e sua contribuição para o conhecimento da ciência, identificando as aprendizagens possíveis em sala de aula. Na pesquisa utiliza-se uma adaptação do método clinico piagetiano ...

Este artigo tem por objetivo apresentar uma simulação da estimativa dos parâmetros das habilidades de indivíduos sujeitos a um teste, utilizando o método da Teoria da Resposta ao Item (TRI). Para isso, foi feito uma análise ...

The anapole form factor of the nucleon is calculated in chiral perturbation theory in leading order. To this order, the form factor originates from the pion cloud, and is proportional to the non-derivative parity-violating ...

The Bethe ansatz in its several formulations is the common tool for the exact solution of one dimensional quantum Hamiltonians. This ansatz asserts that the several eigenfunctions of the Hamiltonians are given in terms of ...

The analysis of wave effects above salinity is important in order to define mixing processes and their potential to change density gradients, since action in the region of the Patos Lagoon plume is highly dynamic. This ...

The exact solution of the asymmetric exclusion problem and several of its generalizations is obtained by a matrix product ansatz. Due to the similarity of the master equation and the Schr¨odinger equation at imaginary times ...

In this paper, we report a formulation for the exposure buildup factor by solving the one-dimensional photon transport equation in a heterogeneou slab by the LTSN method, assuming the Klein-Nishina scattering kernel as the ...

The franciscana dolphin, Pontoporia blainvillei, is endemic to the western South Atlantic Ocean. Its distribution is restricted to waters up to 30 m depth, making it vulnerable to human influence. In southern Brazil the ...

The transition to turbulence in a stably stratified flow is a problem of considerable interest in fluid dynamics with applications in both geophysical sciences and engineering. This transition is controlled by competition ...

We obtain through a Matrix Product Ansatz (MPA) the exact solution of the most general N-state spin chain with U(1)N symmetry and nearest neighbour interaction. In the case N = 6 this model contain as a special case the ...

Recently it was shown that the eigenfunctions for the the asymmetric exclusion problem and several of its generalizations as well as a huge family of quantum chains, like the anisotropic Heisenberg model, Fateev- Zamolodchikov ...

The anapole form factor of the nucleon is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isovector anapole form factor does not vanish. The anapole moment depends on ...

A survey is given on the applications of hydrodynamic model of nucleus-nucleus collisons, focusing especially on i) the resolution of hydrodynamic equations for arbitrary configurations, by using the smoothed-particle ...

We study a two-dimensional XXZ-Ising model on a square-hexagon denoted for simplicity by 4–6 lattice with spin 1/2. The phase diagram at zero temperature is discussed, where five states are found, two types of ferrimagnetic ...