Tue, 17 Feb 2009

14:30 - 15:30
L3

The edge correlation of random forests

Dudley Stark
(QMUL)
Abstract

The conjecture was made by Pemantle that a forest chosen uniformly at random from all forests in any finite graph G has the edge-negative association property. We use enumerative methods to show that this conjecture is true for n large enough when G is a complete graph on n vertices and derive related results for random trees.

Tue, 24 Feb 2009
12:00
L3

Asymptotic Quasinormal Frequencies for d-Dimensional Black Holes

Jose Maciel Natario
(Lisboa)
Abstract

I will explain what quasinormal modes are and how to obtain asymptotic formulae for the quasinormal frequencies of static, spherically symmetric black hole spacetimes in d dimensions in the limit of very large imaginary part.

Tue, 10 Feb 2009
12:00
L3

Boundedness and decay of scalar waves on Kerr and more general black holes

Igor Rodnianski
(Princeton)
Abstract

I will review our current mathematical understanding of waves on black hole backgrounds, starting with the classical boundedness theorem of Kay and Wald on Schwarzschild space-time and ending with recent boundedness and decay theorems on a wider class of black hole space-times.

Mon, 02 Mar 2009

12:00 - 13:00
L3

Calabi-Yau Groups

Volker Braun
(Dublin Institute of Advanced Studies)
Abstract
Conjecturally, there are only finitely many possible fundamental groups of Calabi-Yau manifolds. I will start by reviewing some of the known examples of such "Calabi-Yau groups" and their importance or string theory. Then I will present some progress towards the classification of the free quotients of complete intersection Calabi-Yau manifolds in products of projective spaces.
Subscribe to L3