[hep-th] podsetnik na predavanja u okviru CEEPUS mreze, cetvrtak 29. maj

[Marija Dimitrijevic Ciric]

Zdravo svima,  

samo da vas podsetim da cemo sutra imati dva seminara u okviru CEEPUS
programa. Nasi gosti su prof. dr Dragoljub Dimitrijevic sa PMF-a u Nisu
i prof. dr Andrzej Borowiec sa Univerziteta u Wroclawu. Evo detalja: 

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ČETVRTAK 29. maj, 14 časova, sala 665 (plava sala) na Fizičkom fakultetu
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prof. Dragoljub Dimitrijević (PMF Nis)

Title: Scalar Fields in Cosmology

Abstract: Cosmological observational data has been collected over the
last thirty years. These include the precise measurement of CMB
radiation, evidence of the accelerated expansion of the Universe, the
discovery of gravitational waves, an image of the black hole at the
center of the supergiant elliptical galaxy and many others. In order to
study for example Cosmological Inflation or primordial black holes we
need to use real scalar fields in curved space-time background. The
scalar fields in use are canonical and non-canonical scalar fields. This
is introductory story of one interesting
non-canonical scalar field - tachyon scalar field.

Prof. Andrzej Borowiec (Wroclaw University, Wroclaw)

Title: Scalar-tensor gravity models and their application in cosmology

Abstract: Scalar-tensor gravity is the most straightforward
generalization of Einstein metric gravity by adding a single scalar
field. It can be helpful in solving various problems plaguing the
original theory, such as non-renormalizability or the well-known dark
energy and dark matter problems in cosmology. During my lecture, I will
focus on the internal mathematical structure of such a class of
theories, the role of conformal transformation, choice of frame,
non-minimal coupling to the matter stress-energy tensor, and the role
played by invariant quantities. I will point out the difference between
purely metric, Palatini, or hybrid approaches and how they can be
described in a unified way. Next, I provide concrete cosmological models
and their analyses in the minisuperspace formalism, which allows one to
take into account the arbitrary form of the stress-energy tensor
non-minimally coupled to the metric. In particular, the possibility of
separating dark from baryonic matter following cosmological data will be
presented.

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Pozdrav! 

Marija

-- 
Marija Dimitrijevic Ciric

University of Belgrade
Faculty of Physics
Studentski trg 12-16
11000 Belgrade
Serbia
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