Programme: Poster

 Poster: David Andriot Title: UNIFORMLY ACCELERATED MOTION and THOMAS PRECESSION in DSR: Predictions of Quantum Gravity effects Abstract: In this work, we have studied two relativistic phenomenons - the uniformly accelerated motion and the Thomas precession - and calculated how they were modified by several approaches of Deformed Special Relativity (DSR). We used Magueijo-Smolin and Snyder deformations. We obtained some pertubative corrections to the two phenomenons, and in one case, we obtained that a uniformly accelerated observer could reach the speed of light in a finite duration, which depends of his mass. Poster: Mohammadreza Khoshbin-e-Khoshnazar Title: Abstract: We proposed that a discretized torus can be suitable candidate for the very early universe and we show when the number of finit sets approches the planck density the corelation would be complicated.It seems this idead might be solved horizon problem.Finally we speculate on binding energy in the very early universe by using cluster expansion methode.This idea might be solved singularity problem. Poster: Elisa Manrique Title: Abstract: Poster: Dr. Merced Montesinos Title: Abstract: Poster: Jeffry Morton Title: Abstract: Poster: Dr Ioannis Raptis Title: Abstract: Poster: Roman Steigl Title: Quantum cosmology with scalar field Abstract: The Wheeler-DeWitt equation of standart cosmological models with a scalar field is formulated with arbitrary factor ordering. Exact solutions for arbitrary factor ordering are presented. These solutions are permited by factor ordering parameters. Moreover, relevance of continuity equation derived from the Wheeler-DeWitt equation is depending on these parameters. Consequently parameters family is reduced. Poster: Takashi Tamaki Title: Universal area spectrum in single-horizon black holes Abstract: We investigate highly damped quasinormal mode of single-horizon black holes motivated by its relation to loop quantum gravity. Using the WKB approximation, we show that the real part of the frequency approaches the value $T_{\rm H}\ln 3$ for dilatonic black hole. It is surprising since the area specrtum of the black hole determined by the Bohr's correspondence principle completely agrees with that of Schwarzschild black hole for any values of the electromagnetic charge or the dilaton coupling. We discuss its generality for single-horizon black holes and the meaning in loop quantum gravity.