[hep-th] Seminar grupe za gravitaciju, čestice i polja, 27. oktobar 2023.

[dgocanin]

Zdravo svima,

najavljujem da će u petak, 27. oktobra, Dejan Simić (Institut za fiziku, 
Zemun) održati seminar na Institutu za fiziku.

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Naslov: Note on asymptotic symmetry of massless scalar field at null 
infinity

Apstrakt: Since ten years ago, we know that the memory effect, soft 
theorem and asymptotic symmetry at null infinity are mutually 
equivalent. Any massless field has its soft theorem, including a 
massless scalar field, so we expect the
asymptotic symmetry associated with the massless scalar case to be 
present also. We will try to understand the asymptotic symmetry of a 
massless scalar field at null infinity. In order to make sense of 
asymptotic symmetry for theory without gauge symmetry, we slightly 
generalize the notion of asymptotic symmetry. Derivations of the results 
are done in two different ways, using Hamiltonian analysis and using 
covariant phase space. Along the way, we will explain the necessary 
concepts, such as asymptotic symmetry, Hamiltonian analysis and 
covariant phase space.

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Seminar počinje u 11:15 uživo na Institutu za fiziku u sali 360 na 2. 
spratu. Osim toga, seminar se može pratiti i preko linka

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


Pozdrav,
Dragoljub