The 4th Conference of the Polish Society on Relativity

Session

Cosmology II

25 Sept 2017, 17:50

Kazimierz Dolny, Poland

43. Dark Inflation

Michal Artymowski (Jagiellonian University)

25/09/2017, 17:50

Oral presentation (preferred)

I will present the Idea of an inflaton without direct couplings to any additional fields. I will show a possible mechanisms of reheating together with implications of dark inflation on predictions of inflation, dark energy, dark matter, thermal history of the Universe, electro-weak phase transition and gravitational waves production.

18. General relativity with a positive cosmological constant $\Lambda $ as a gauge theory

Janusz Garecki

25/09/2017, 18:10

Oral presentation (preferred)

In the paper we show that the general relativity action (and Lagrangian) in recent Einstein-Palatini formulation is equivalent to the action (and Langrangian) of a gauge field.

We begin with a bit of information of the Einstein-Palatini (EP) action, then we present how Einstein fields equations can be derived from it. In the next section, we consider Einstein-Palatini action integral for...

76. Game of frames: Jordan vs. Einstein - dynamical systems approach

Orest Hrycyna (National Centre for Nuclear Research)

25/09/2017, 18:30

Oral presentation (preferred)

TBA

35. New classes of modified teleparallel gravity models

Sebastian Bahamonde (University College London)

Oral presentation (preferred)

In this talk, a new class of modified teleparallel theory is presented. The action of this theory
is constructed by a function of the irreducible parts of torsion f(Tax, Tten, Tvec), where Tax, Tten
and Tvec are the axial, tensor and vector components of torsion. This is the most general (well-motivated) second order teleparallel theory of gravity that can be constructed from the...