High Energy Physics Seminars next week - Launay + Sun (ON WEDNESDAY!!!)

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_*
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*Tuesday, 23 June *2026, at *16:00* - *_Lagrange Lecture 
Hall_***-*https://indico.ictp.it/event/11364/*


Yoann Launay (Hawking Center for Theoretical Cosmology)


*“Stochastic Scalar(s)-Tensor (Inflation) Theories"*
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_Abstract_

In this talk, I will review our recent work and its attempt to extend 
the scope and predictive power of the stochastic formalism for 
inflation. After briefly introducing our gauge-invariant coarse-graining 
procedure, I will discuss our formulation of stochastic dynamics in full 
General Relativity, including all metric and scalar matter degrees of 
freedom, as well as gradient contributions. I will then present 
numerical implementations of these stochastic equations within the 
framework of Numerical Relativity, demonstrating their efficacy in 
well-understood scenarios and their application to ongoing investigations.
With this framework fully established, I will show how the formalism can 
be generalised beyond General Relativity, in particular to scalar–tensor 
theories of dark energy and multifield scenarios, and potentially beyond.
Finally, if time permits, and given the newly unlocked possibility of 
studying near-horizon phenomena and broader classes of theories, I will 
conclude by discussing how one can identify the stochastically relevant 
regions of spacetime.

To attend via _*Zoom*_, please *_register_* here:
https://zoom.us/meeting/register/j5gHBKwzR9GpMTxn5V0iWA


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*/!!!Please note unusual day!!!/*
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*_Wednesday_, 24 June *2026, at *16:00* - *_Euler Lecture 
Hall_***-*https://indico.ictp.it/event/11316/
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Zimo Sun (Institute for Advanced Study, Princeton)


*“CFT in AdS"*
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_Abstract_

Euclidean AdS is equivalent to the half-space by a Weyl transformation, 
providing a convenient setup for studying boundary CFT and interface CFT 
(the latter after performing the folding trick). I will discuss boundary 
criticality of the Wilson-Fisher (WF) CFT and interface criticality of 
the Gross-Neveu-Yukawa (GNY) CFT in this setup. In the first half of the 
talk, I will present an epsilon-expansion result for the boundary 
central charge of the normal boundary transition of the WF CFT, and 
compare it with a recent fuzzy sphere result. In the second part, I will 
present a novel surface fixed point in the 3d GNY model using large N 
arguments.

To attend via _*Zoom*_, please *_register_* here:
https://zoom.us/meeting/register/ibQQlmKKRBe1iq7R9vp0KA