[hep-th] Seminari grupe za gravitaciju, cestice i polja, 18. i 19. maj 2023

[Marko Vojinovic]

Pozdrav svima,

U vezi sa Marijinom najavom za seminare u cetvrtak i petak, skrecem paznju
da cete seminare u petak moci da pratite i online. Imamo nov BBB server,
i nov link za pristup je sledeci:

    https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww

Puno pozdrava!

:-)
Marko


Dr. Marko Vojinovic
Group for Gravitation, Particles and Fields
Institute of Physics
University of Belgrade
======================
home page: www.markovojinovic.com
e-mail:    vmarko at ipb.ac.rs



On Sun, 14 May 2023, Marija Dimitrijevic Ciric wrote:

>
> Zdravo svima,
>
> kao sto znate, ove nedelje imamo goste iz inostranstva: prof. Richard 
> Szabo (Heriot-Watt University, Edinburgh), prof. Vladislav Kupriyanov 
> (Universidade Federal do ABC, São Paulo) i dr Larisa Jonke (IRB, 
> Zagreb). Gosti ce biti na Fizikom fakultetu od ponedeljka do cetvrtka, a 
> u petak cemo biti na Institutu. Evo najave seminara u cetvrtak i petak. 
> Obratite paznju da su navedena vremena bez 15 minuta kasnjenja, dakle 
> seminari pocinju tacno u navedeno vreme.
>
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>
> Cetvrtak 18. maj, Fizicki fakultet, sala 665
>
> 15:00-16:00 dr Igor Prlina (Institut za fiziku, Zemun)
>
> Naslov:  Amplitugicians: Using (non-magic) Tricks to Find Scattering 
> Amplitudes
>
> Asptrakt: This talk will introduce the audience to the goals and methods 
> of the so-called Amplitudes project, where alternatives to the Feynman 
> diagram approach are used to calculate scattering amplitudes in 
> different theories. Some common themes in the Amplitudes approach are 
> symmetry adapted variables, recursive relations and geometric 
> interpretation. These themes will be illustrated by introducing spinor 
> helicity formalism, BCFW recursion, momentum twistors, and the 
> Amplituhedron. Finally, some of the lecturer's own results on the 
> connection of the boundaries of the Amplituhedron with amplitude 
> singularities will be presented.
>
> 16:00-17:00 prof. Richard Szabo (Heriot-Watt University, Edinburgh)
>
> Naslov: Homotopy double copy of noncommutative gauge theories
>
> Apstrakt: This talk will summarise recent work attempting to understand 
> how standard noncommutative gauge theories, such as those which arise 
> naturally from string theory, fit into the paradigmof colour-kinematics 
> duality and the double copy of gauge theory to gravity. The treatment 
> will focus on the elegant formulation of the double copy prescription 
> using homotopy algebras. Along the way we shall encounter some novel 
> noncommutative scalar field theories with rigid colour symmetry that 
> have no commutative counterparts, whose double copies are deformations 
> of some known topological theories such as the special Galileon theory 
> in two dimensions and self-dual gravity in four dimensions.
>
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>
> Petak 19. maj, Institut za fiziku
>
> 11:00-12:00 prof. Vladislav Kupriyanov (Universidade Federal do ABC, São 
> Paulo)
>
> Naslov:  Homotopy algebras, symplectic embeddings and noncommutative 
> gauge theory
>
> Asptrakt: The problem of the consistent definition of noncommutative 
> gauge theory on spaces with non-constant noncommutativity parameters has 
> attracted the attention of theoretical physicists and mathematicians for 
> more than two decades. Nevertheless, this theory is still not completely 
> understood in full generality. In recent years we have formulated two 
> new approaches to consistent non-commutative and non-associative 
> deformations of gauge theory. The first one employs the framework of 
> homotopy algebras and is a powerful tool for the construction of order 
> by order noncommutative deformation. The second approach makes use of 
> the elements from the symplectic geometry and is better adapted for 
> obtaining the explicit all-order expressions. Several interesting 
> results have been obtained and published in this direction. In this talk 
> I will briefly describe the two approaches and discuss the recent 
> progress in noncommutative gauge theories.
>
> 12:00-13:00 prof. Maja Buric (Fizicki fakultet, Beograd)
>
> Naslov: Scalar fields on fuzzy de Sitter space
>
> Apstrakt: After a short introduction of fuzzy de Sitter geometry, we 
> present general
> solution to the Klein-Gordon equation on this noncommutative space.
>
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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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