Seminar of Theory of Relativity and Gravitation
2006/2007 | 2007/2008 | 2008/2009 | 2009/2010 | 2010/2011 | 2011/2012 | 2012/2013 | 2013/2014 | 2014/2015 | 2015/2016 | 2016/2017 | 2017/2018 | 2018/2019 | 2019/2020 | 2020/2021 | 2021/2022 | 2022/2023 | 2023/2024 | 2024/2025 | Seminar homepage
2012-06-08 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15 
Mikołaj KorzyńskiNiejednorodne modele kosmologiczne z czarnymi dziurami jako materią
Closed universe with black holes as the matter content
2012-06-01 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Łukasz NakoniecznyYang-Mills black hole and Dirac fermions
Static solution of Einstein-Yang-Mills system could be used as a toy model for black hole created in dense plasma of elementary particle. This solution and its properties within spherically symmetric magnetic SU(2) ansatz are well known. Using methods of field theory I will show that its existence and regularity depend crucially on the presence of Dirac fermions around such an object. To do so I will use bosonization technique. Within this approach I will show that the interaction between such fermions and Yang-Mills field leads to destruction of static and/or purely magnetic anstaz for black hole in consideration.
2012-05-25 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Andrzej Dragan (IFT UW)Pomiar rzutowy w QFT w nieinercjalnych ukladach odniesienia
2012-05-18 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Piotr SułkowskiON KNOTS, STRINGS AND QUANTUM FIELDS - Chern-Simons theory and homological knot invariants
Knot theory is a fascinating field of mathematics, with applications in physics ranging from biophysics to statistical physics, quantum information theory and string theory. It gained an enormous boost in the 1980’s after a discovery of so-called Jones polynomial, and its physical interpretation in terms of a topological quantum field theory with the action functional consisting purely of Chern-Simons term. The last decade has witnessed another series of fascinating developments in this area, in particular (mathematical) discovery of homological knot invariants, and their (physical) realization in terms of Calabi-Yau manifolds. In this talk we will review an approach to knot theory based on Chern-Simons theory, and discuss recent progress in relating its refinement to string theory and homological knot invariants.Note: This is the first (albeit self-contained) of the two talks devoted to knots, strings and quantum fields. The second talk will be presented as the “Exact Results in Quantum Theory and Gravity” seminar, also on May 18th. See also: www.stringtheory.pl/seminaria/
Knot theory is a fascinating field of mathematics, with applications in physics ranging from biophysics to statistical physics, quantum information theory and string theory. It gained an enormous boost in the 1980’s after a discovery of so-called Jones polynomial, and its physical interpretation in terms of a topological quantum field theory with the action functional consisting purely of Chern-Simons term. The last decade has witnessed another series of fascinating developments in this area, in particular (mathematical) discovery of homological knot invariants, and their (physical) realization in terms of Calabi-Yau manifolds. In this talk we will review an approach to knot theory based on Chern-Simons theory, and discuss recent progress in relating its refinement to string theory and homological knot invariants.Note: This is the first (albeit self-contained) of the two talks devoted to knots, strings and quantum fields. The second talk will be presented as the “Exact Results in Quantum Theory and Gravity” seminar, also on May 18th. See also: www.stringtheory.pl/seminaria/
2012-04-27 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Bartłomiej Kamiński (IFT UW)Czy istnieją niesymetryczne horyzonty ekstremalne?
Do non-symmetric extremal horizons exist?
Twierdzenie o jednoznaczności czarnych dziur nie obejmuje przypadku ekstremalnego. Wiadomo jednak, że jednoznaczny jest przypadek osiowosymetryczny. Opowiem o próbach znalezienia odpowiedzi na pytanie o istnienie przypadków niesymetrycznych, będących tematem mojej pracy magisterskiej.
The black hole uniqueness theorem does not hold for the extremal case. It is only known that the axially symmetric case is unique. I will talk about the attempts to find the answer to the question about existence of non-symmetric cases, which are the topic of my master's thesis.
2012-04-20 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Marek SzydłowskiKosmologiczna współczesna jako efektywna teoria Wszechświata
Kosmologia współczesna jest dyskutowana w terminach koncepcji teorii efektywnych w fizyce. Rola pojęcia standardowego modelu kosmologicznego jego założenia i trudności są analizowane z metodologicznego punktu widzenia. Kryterium informacyjne Akaike jest proponowane jako jeden ze sposobów rozwiązywania problemu degeneracji modeli w kosmologii obserwacyjnej. Pokazujemy strukturalną stabilność modelu LambdaCDM dla wyjaśnienia dlaczego ten model jest najlepszym opisem efektywnym w świetle danych.
2012-04-13 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Andrzej WoszczynaWhat is the momentum of cosmological sound wave?
2012-03-30 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Anna Nakonieczna (IFT UW)Collapse of electrically charged scalar field in dilaton gravity
2012-03-23 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Emanuele Alesci (Earlangen)Hamiltonians and Spinfoams
2012-03-16 (Friday)
Sali Seminaryjna Teoretyczna, Hoża 69 at 11:15
Jakub Mielczarek (OA UJ)