[ABE-L] Lembrete: COLMEA -=?ISO-8859-1?Q?_col=F3quio_interins?=titucional - 26 de novembro - CBPF

[Maria Eulalia Vares]

p.s.
Caros colegas, 
reenvio, como lembrete, o aviso do colmea nesta quarta-feira.

Cartaz de divulgação disponível em 
http://www.im.ufrj.br/~coloquiomea/cartaz/2014_11.pdf

Abraços,

Eulalia 
---------- Original Message -----------
From: "Maria Eulalia Vares" <eulalia em im.ufrj.br>
To: im em im.ufrj.br,abe-l em ime.usp.br
Cc: eulalia em cbpf.br
Sent: Wed, 19 Nov 2014 12:54:19 -0200
Subject: COLMEA - colóquio interinstitucional - 26 de novembro - CBPF

> Caros colegas,
> 
> No dia 26 de novembro teremos mais uma edição do Colóquio 
> Interinstitucional "Modelos Estocásticos e Aplicações" (CBPF-IMPA-
> PUC-UFF-UFRJ) com a qual fecharemos o ciclo 2014 do COLMEA.
> 
> Programa:
> 
> 14:00-15:30h - Augusto Q. Teixeira (IMPA)
> "Percolation and local isoperimetric inequalities"
> 
> 15:40-17:00h - Fernando de Melo (CBPF)
> "Open-system dynamics of entanglement"
> 
> 17:00h - Discussão e lanche
> 
> Local: CBPF – Auditório Ministro João Alberto
> Rua Xavier Sigaud, 150. Urca. Rio de Janeiro.
> 
> Informações mais completas sobre os colóquios anteriores podem ser 
> encontradas em
> 
> http://www.im.ufrj.br/~coloquiomea/
> 
> O cartaz de divulgação estará disponível nos próximos dias.
> 
> Todos são muito bem vindos. Agradecemos também pela divulgação.
> 
> Atenciosamente,
> 
> o comitê organizador:  Augusto Q. Teixeira (IMPA), Evaldo M.F. 
> Curado (CBPF), Fábio D.A. Aarão Reis (UFF),  Maria Eulalia Vares 
> (UFRJ), Mariane Branco Alves (UFRJ), Patrícia Gonçalves (PUC-Rio), 
> Stefan Zohren (PUC-Rio)
> 
> ===========================================
> 
> Resumos das palestras
> 
> Percolation and local isoperimetric inequalities
> Augusto Q. Teixeira (IMPA)
> 
> In this talk we will discuss some relations between percolation on a 
> given graph G and its geometry. There are several interesting 
> questions relating various properties of G, such as growth or 
> dimension, and the process of percolation on G. In particular one 
> could look for conditions under which the critical percolation 
> threshold p_c(G) is non-trivial, that is: p_c(G) is strictly between 
> zero and one. In a very important paper on this subject, Benjamini 
> and Schramm asked whether it is true that for every graph satisfying 
> dim(G) > 1, one has p_c(G) < 1. We will explain this question in 
> detail, explaining what they meant by the dimension of a graph and 
> we will present a result that has recently been obtained in this direction.
> 
> Open-system dynamics of entanglement
> Fernando de Melo (CBPF)
> 
> One of the greatest challenges in the fields of quantum information processing
> and quantum technologies is the detailed coherent control over each 
> and all of the constituents of quantum systems with an ever 
> increasing number of particles. Within this endeavor, the harnessing 
> of many-body entanglement against the detrimental effects of the 
> environment is a major and pressing issue. Besides being an 
> important concept from a fundamental standpoint, entanglement has 
> been recognized as a crucial resource for quantum speed-ups or 
> performance enhancements over classical methods. Understanding and 
> controlling many-body entanglement in open systems may have strong 
> implications in quantum computing, quantum simulations of many-body 
> systems, quantum cryptography, quantum metrology, our understanding 
> of the quantum-to-classical transition, and other important 
> questions of quantum foundations.
> 
> In this seminar entanglement will be taken as a dynamic quantity on 
> its own, that evolves due to the unavoidable interaction of the 
> entangled system with its surroundings. I will introduce the main 
> aspects of entanglement dynamics in open quantum systems, portraying 
> its richness and complexity. After setting the stage, I will present 
> two different approaches two deal with entanglement dynamics: First, 
> for bipartite systems I'll present a deterministic dynamical 
> equation for entanglement. Second, in order to cope with many-body 
> systems, I'll resort to a statistical description of typical 
> entanglement dynamics. The latter relies solely on geometrical 
> aspects of the space of states.
> 
> --
> Maria Eulalia Vares
> Departamento de Métodos Estatísticos
> Instituto de Matemática - UFRJ
> http://www.im.ufrj.br/~eulalia
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