Relativity Seminar
of the Institute of Theoretical Physics

fall 2011


Given seminars:

September 21, 2011
!!! MIMOě┴DN╠ VE STěEDU (od 13:10) !!!!
Dynamical volume element of space-time manifold and its outputs: the cosmological constant problem, the fifth force problem; etc.
Dr. Alexander Kaganovich
Dept. of Physics and Dept. of Mathematics, Ben Gurion University of the Negev, Beer-Sheva, Israel
October 18, 2011
Asymptotic stability of Petrov type II twisting metrics - Part 1
dr. W│odzimierz Natorf
Institute of Theoretical Physics, Warsaw University / ┌TF
October 25, 2011
Asymptotic stability of Petrov type II twisting metrics - Part 2
dr. W│odzimierz Natorf
Institute of Theoretical Physics, Warsaw University / ┌TF
November 1, 2011
On convergence of linear perturbations of the Schwarzschild black hole
Pavel ╚Ý×ek
┌TF
(seminar in Czech language)
November 8, 2011
Seminß° se nekonß
(seminar in Czech language)
November 15, 2011
Punctures and trumpets
Anton Khirnov
┌TF
(seminar in Czech language)
November 22, 2011
The emergence of special and doubly special relativity
dr. Fabio Scardigli
Academia Sinica, Institute of Physics, Taipei, Taiwan

In this talk we show how a classical Brownian motion on a short scale can originate a relativistic motion on scales larger than particle's Compton wavelength. Viewed in this way, special relativity is not a primitive concept, but rather it statistically emerges when a coarse graining average over distances of order, or longer than the Compton wavelength is taken. We also present the modifications necessary to accommodate in our scheme the doubly special relativistic dynamics. In this way, an unsuspected, common statistical origin of the two frameworks is brought to light for the first time. Salient issues such as generalized commutation relations, and Hausdorff dimensions of path-integral trajectories, are also discussed. Reference paper: arXiv: 1105.3930

November 29, 2011
Nambu brackets and membrane actions
Ing. Branislav JurŔo, CSc., DSc.
Matematickř ˙stav UK, MFF UK
December 6, 2011
Conformal Null Einstein-Maxwell Fields
Jakub HruÜka
┌TF
(seminar in Czech language)
December 13, 2011
Linear problem for the Ernst equation
Norman GŘrlebeck
┌TF
December 20, 2011
Some spacetimes with higher rank Killing-Stńckel tensors / Perimeter School International: informace o studiu
dr. David Kubiz˛ßk
Perimeter Institute for Theoretical Physics, Waterloo, Ontario

By applying the lightlike Eisenhart lift to several known examples of low-dimensional integrable systems admitting integrals of motion of higher-order in momenta, we obtain four- and higher-dimensional Lorentzian spacetimes with irreducible higher-rank Killing tensors. Such metrics, we believe, are first examples of spacetimes admitting higher-rank Killing tensors. Included in our examples is a four-dimensional supersymmetric pp-wave spacetime, whose geodesic flow is superintegrable. We also discuss the extension to the quantum regime.

January 3, 2012
Seminß° se nekonß
(seminar in Czech language)
January 10, 2012
Good news, bad news: type II perturbations of the Kerr metric
W│odek Natorf
ITP

Other semesters:


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