Navegação Ciências Exatas e da Terra por Autor "Teles, Tarcisio Nunes"
Resultados 1-7 de 7
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Collisionless relaxation in non-neutral plasmas
(2008) [Artigo de periódico]A theoretical framework is presented which allows us to quantitatively predict the final stationary state achieved by a non-neutral plasma during a process of collisionless relaxation. As a specific application, the theory ... -
Ensemble inequivalence in a mean-field XY model with ferromagnetic and nematic couplings
(2014) [Artigo de periódico]We explore ensemble inequivalence in long-range interacting systems by studying an XY model of classical spinswith ferromagnetic and nematic coupling.We demonstrate the inequivalence bymapping themicrocanonical phase diagram ... -
Ergodicity breaking and parametric resonances in systems with long-range interactions
(2012) [Artigo de periódico]We explore the mechanism responsible for the ergodicity breaking in systems with long-range forces. In thermodynamic limit such systems do not evolve to the Boltzmann-Gibbs equilibrium, but become trapped in an out-of-equilibrium ... -
Nonequilibrium phase transitions in systems with long-range interactions
(2012) [Artigo de periódico]We introduce a generalized Hamiltonian mean field model—an XY model with both linear and quadratic coupling between spins and explicit Hamiltonian dynamics. In addition to the usual paramagnetic and ferromagnetic phases, ... -
Relaxation and emittance growth of a thermal charged-particle beam
(2009) [Artigo de periódico]We present a theory that allows us to accurately calculate the distribution functions and the emittance growth of a thermal charged-particle beam after it relaxes to equilibrium. The theory can be used to obtain the fraction ... -
Reply to “Comment on ‘Temperature inversion in long-range interacting systems’ ”
(2016) [Artigo de periódico]We present evidence that the mechanism proposed in Teles et al. [Phys. Rev. E 92, 020101 (2015)], referred to as the TGDC mechanism, does apply to a model with repulsive mean-field interactions where it produces temperature ... -
Temperature inversion in long-range interacting systems
(2015) [Artigo de periódico]Temperature inversions occur in nature, e.g., in the solar corona and in interstellar molecular clouds: Somewhat counterintuitively, denser parts of the system are colder than dilute ones.We propose a simple and appealing ...
