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Extended tachyon field, Chaplygin gas, and solvable k-essence cosmologies
(American Physical Society, 2004-12)
We investigate a flat Friedmann-Robertson-Walker spacetime filled with k essence and find the set of functions F that generate three different families of extended tachyon fields and Chaplygin gases. They lead to accelerated ...
Diquarks and nucleons under strong magnetic fields in the NJL model
(American Physical Society, 2020-11)
We study the description of nucleons and diquarks in the presence of a uniform strong magnetic field within the framework of the two-flavor Nambu–Jona-Lasinio model. Diquarks are constructed through the resummation of quark ...
Magnetic field reversals and long-time memory in conducting flows
(American Physiological Society, 2014-10)
Employing a simple ideal magnetohydrodynamic model in spherical geometry, we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment. ...
Solving the multi-site and multi-orbital Dynamical Mean Field Theory using Density Matrix Renormalization
(Frontiers Research Foundation, 2018-02)
We implement an efficient numerical method to calculate response functions of complex impurities based on the Density Matrix Renormalization Group (DMRG) and use it as the impurity-solver of the Dynamical Mean Field Theory ...
WW3-BRAMS MODEL COUPLING FOR OCEAN WAVES FORECASTINGAcoplamento Brams-WW3 para Previsão de Ondas Oceânicas
(Universidade Federal de Santa Maria, 2016)
Disjunctive Optimization Model for the Production Planning and Blending of Crude Oil in a Conventional Oil Field
(American Chemical Society, 2018-01)
This work presents a multiperiod nonlinear formulation based on generalized disjunctive programming (GDP) that integrates the production planning and pooling problems in a conventional onshore oil reservoir with fixed ...
Effective field theory approach for the S= 32 bilayer honeycomb antiferromagnet
(American Physical Society, 2021)
A sparse spectrum technique for gridding and separating potential field anomalies
(Society of Exploration Geophysicists, 2000-07)
The discrete Fourier transform of a potential field, measured at stations irregularly distributed on a surface, is modeled by means of a high-resolution sparse estimate derived originally for seismic signal processing. The ...
Dynamical mean field theory with the density matrix renormalization group
(American Physical Society, 2004-12)
A new algorithm to solve the dynamical mean field theory (DMFT) equations of strongly correlated models exploiting the DMRG methodology was presented. The methods uses the density matrix renormalization group technique to ...