of the Department of Theoretical Physics

Seminar is held on Tuesdays at 13:10 pm in the lecture room of the Institute

on the 10th floor of the department building at Trója, V Holešovičkách 2, Prague 8

- October 30, 2018
- TBA
- (seminar in Czech language)
- November 6, 2018
- Propagators of the wave equation on low-regularity spacetimes
*Dr. Yafet Erasmo Sanchez Sanchez*- Max Planck Institute for Mathematics, Bonn
I will define classical and non-classical solutions of the wave equation. I will give some motivations about why low regularity scenarios are interesting. Finally, I will focus on the classical ones and discuss their relationship with quantum field theory in spacetimes with limited regularity.

- July 24, 2018
- The type D and the near-horizon geometry equations
*Prof. Jerzy Lewandowski*- Institute of Theoretical Physics, University of Warsaw
- September 25, 2018
- skype seminar
- Black holes as probes of fundamental physics
*Robert Benkel*- University of Nottingham, UK
- September 27, 2018
- !!! Thursday from 13:10 !!!
- Shadow of black holes at cosmological distances
*Dr. Oleg Yu. Tsupko*- Space Research Institute of Russian Academy of Sciences, Moscow
- October 2, 2018
- Remarks on ghost-free theories
*Prof. Valeri P. Frolov*- Department of Physics, University of Alberta, Edmonton
- October 5, 2018
- !!! FRIDAY from 13:10 !!!
- Gravitational-wave astrophysics: a new era of discovery
*Dr. Jessica McIver*- California Institute of Technology
- October 5, 2018
- !!! FRIDAY, from 16:20 !!!
- Hyperbolicity of relativistic fluids
*Dr. David Hilditch*- Centro Multidisciplinar de Astrofisica, IST, University of Lisbon
I will discuss conditions for the well-posedness of the initial value problem for evolution type PDEs. Well-posedness is a necessary condition for any numerical approximation to converge in the limit of infinite resolution. The crucial condition is that of strong-hyperbolicity. I will then consider various fluid models and highlight in particular the difficulties faced in particular in the modeling of stars. Several popular formulations of MHD turn out to be ill-posed.

- October 9, 2018
- Derrick’s theorem on curved spacetime and the stability of relativistic stars in modified gravity
*Dr. Sante Carloni*- Centro Multidisciplinar de Astrofisica, IST, University of Lisbon
I will present a generalisation of Derick theorem to the case of curved spacetime. As a consequence of this generalisation, relativistic boson stars are proved to be always unstable. Derrick’s theorem has profound consequences also on modified gravity, and in particular on theories with an additional scalar degrees of freedom. I will comment extensively on these consequences.

- October 16, 2018
- The next big thing: extreme-mass-ratio inspiral

(Impressions from 2018 Capra conference) *Dr. Tomáš Ledvinka*- ITP
- October 23, 2018
- Uniformly accelerating, yet standing still

(On boost-rotation, topology of G-->0 limit of C-metric, higher dimensions, and linearized gravity) *Dr. David Kofroň*- ITP
The search for the C-metric in higher dimensions is still unsuccessful and ongoing project. I wanted, also unsuccessfully, to find a simple solution to general boost-rotation symmetric metric in higher dimensions (generalization of Bonnor-Swaminayaran solutions). Finally I ended up in the linearized gravity to gain some insight in this topics and to learn some lessons. Based on work in progress this would be more discussion open seminar than a lecture.

- spring 2018
- fall 2017
- spring 2017
- fall 2016
- spring 2016
- fall 2015
- spring 2015
- fall 2014
- spring 2014
- fall 2013
- spring 2013
- fall 2012
- spring 2012
- fall 2011
- spring 2011
- fall 2010
- spring 2010
- fall 2009
- spring 2009
- fall 2008
- spring 2008
- fall 2007
- spring 2007
- fall 2006
- spring 2006
- fall 2005
- spring 2005
- fall 2004
- spring 2004
- fall 2003
- spring 2003
- spring 2002
- fall 2001
- spring 2001
- fall 2000
- spring 2000
- fall 1999
- spring 1999
- fall 1998
- spring 1998
- fall 1997

*Jiří Bičák*
*Oldřich Semerák*

© October 19, 2018; Oldřich Semerák

© October 24, 2018; generated by application