Superdiffusivity of quantum walks: A Feynman sum-over-paths description, F. M. de Andrade and M. G. E. da Luz,
Phys. Rev. A 86, 042309 (2012) DOI: 10.1103/PhysRevA.86.042309
Superconductivity and magnetism in K(x)MoO(2-d), L. M. S. Alves, C. A. M. dos Santos, S. S. Benaion, A. J. S. Machado, B.
S. de Lima, J. J. Neumeier, M. D. R. Marques, J. Albino Aguiar, R. J. O. Mossanek, and M. Abbate, J. Appl. Phys. 112, 073923 (2012)
Tema: Statistical Mechanics of systems with long-range interactions
Palestrante: Yan Levin Instituto de Física da UFRGS
Data: 18/10/2012 Quinta-feira 15:30 hs.
Local: Sala PE 04
Resumo: Systems with long-range forces behave very differently from those in which
particles interact through short-range potentials. For systems with
short-range forces, for arbitrary initial conditions, the final stationary
state corresponds to the thermodynamic equilibrium and can be described
equivalently by either a microcanonical, canonical, or a grand-canonical
ensemble. On the other hand, for systems with unscreened long-range
interactions, equivalence between ensembles breaks down. In a
microcanonical ensemble, in thermodynamic limit, such Hamiltonian
systems do not evolve to the usual Maxwell-Boltzmann equilibrium,
but become trapped in a non-ergodic stationary state which explicitly
depends on the initial particle distribution. In this talk, a theoretical
framework will be presented which allows us to obtain the final stationary
state achieved by systems with long-range interactions. The theory is able
to quantitatively predict both the density and the velocity distributions
in the final stationary state, without any adjustable parameters [1,2,3].
 Y. Levin, R. Pakter and T. N. Telles, Phys. Rev. Lett. v. 100, p.
 Y. Levin, R. Pakter and F.B. Rizzato, Phys. Rev. E v. 78, p. 021130
(2008); T. N. Teles, Y. Levin and R. Pakter, Mon. Not. R. Astron. Soc. v.
417, p. L21 (2011).
 R. Pakter and Y. Levin, Phys. Rev. Lett. v. 106, p. 200603 (2011)
Concurso para Físico Experimental no Departamento de Física da UFSCar. Interessados procurem o Prof. Rigolin: e-mail: email@example.com. Muito interessados escrevam para: firstname.lastname@example.org mandando seu CV.