Relativity Seminar
of the Institute of Theoretical Physics

spring 2011


Given seminars:

March 1, 2011
Conformal Killing-Yano symmetry in the presence of skew-symmetric torsion
dr. Tsuyoshi Houri
Osaka City University, Advanced Mathematical Institute

Conformal Killing-Yano (CKY) symmetry has been studied as a fundamental hidden symmetry which plays a crucial role in black hole spacetimes. In this talk, after reviewing the history of CKY symmetry in four dimensions, I would like to present a generalization to higher dimensions and its applications. I further talk about CKY symmetry in the presence of skew-symmetric torsion. You will see that such a symmetry appears in black hole spacetimes of supergravity theories and that the torsion is naturally identified with a 3-form occuring in the theories. Finally, I would like to talk about recent progress if time permits. Ref. JHEP07(2010)055[arXiv:1004.1032]

March 8, 2011
Thermodynamic volume of black holes and reverse isoperometric inequality
dr. David Kubizňák
DAMTP, University of Cambridge

March 15, 2011
Higher dimensional Kerr-Schild space-times with anti-de Sitter background
Tomáš Málek
Matematický ústav AV ČR
(seminar in Czech language)
March 22, 2011
Seminář se nekoná
(seminar in Czech language)
March 29, 2011
Dynamics of young stars in a galactic nucleus
Mgr. Jaroslav Haas, dr. Ladislav Šubr, prof. David Vokrouhlický
Astronomický ústav, MFF UK
(seminar in Czech language)
April 5, 2011
Testing gravity with cosmology - II
Dr. Constantinos Skordis
School of Physics and Astronomy, University of Nottingham
April 12, 2011
Geometrical properties of the Szekeres model and its applications in cosmology
David Vrba
ITP
(seminar in Czech language)
April 19, 2011
Dynamics of young stars in a galactic nucleus
Mgr. Jaroslav Haas, dr. Ladislav Šubr, prof. David Vokrouhlický
Astronomický ústav, MFF UK
(seminar in Czech language)
April 26, 2011
!!! KONÁ SE JAKO SEMINÁŘ ÚTF OD 10:00 !!!
Using numerical relativity to explore fundamental physics and astrophysics
prof. Luciano Rezzolla
Albert-Einstein Institute, Max-Planck Institute for Gravitational Physics, Potsdam

Recent years have seen a major progress in numerical relativity and the solution of the simplest and yet among the most challenging problems in classical general relativity: that of the evolution of two objects interacting only gravitationally. I will review the results obtained so far when modelling binaries of black holes or of neutron stars and also discuss the impact these studies have in detection of gravitational-waves, in astrophysics, and in our understanding of general relativity.

May 3, 2011
A class of exact solutions to quadratic gravity
Mgr. Tomáš Málek
Matematický ústav AV ČR
(seminar in Czech language)
May 10, 2011
Seminář se nekoná
(seminar in Czech language)
May 17, 2011
beseda o studiu (astrofyziky) v Americe
Mgr. Ondřej Pejcha
Department of Astronomy, Ohio State University, Columbus, USA
(seminar in Czech language)
May 24, 2011
Seminář se nekoná
(seminar in Czech language)
May 31, 2011
The wave equation on space-times of low regularity
Prof. Roland Steinbauer
Department of Mathematics, University of Vienna

We consider the wave operator $\box_g=g^{ab}\nabla_a\nabla_b$ on Lorentzian manifolds where the metric $g$ is of low regularity. After recalling the classical theory of the wave equation on space-time we turn to the case of rough metrics. We present a local existence and uniqueness result for essentially bounded metrics based on the nonlinear distributional geometry in the sense of J.F. Colombeau. Finally, we extend this result to a global well-posedness theorem on (suitably generalized) globally hyperbolic space-times of low regularity.

June 14, 2011
mimořádný seminář na dvě témata
1) Emergent spacetime in superfluid Helium
2) Quasinormal modes in 2D black holes
Andrei Zelnikov
University of Alberta, Canada

Other semesters:


© February 27, 2012; Oldřich Semerák <semerak@mbox.troja.mff.cuni.cz>
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