High Energy Physics Seminars in two weeks - Tartaglia and Pelliconi

[HECAP - Margherita Di Giovannantonio]

*_HIGH ENERGY PHYSICS SEMINARS_*
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/!!! Please note unusual day!!!/


*_Wednesday_, 16 September *2026, at *16:00* - *Lagrange* Lecture Hall 
-*https://indico.ictp.it/event/11499/*

Michelangelo Tartaglia (Instituto de Física Teórica, UAM-CSIC)


*“Asymmetric Orbifolds with Vanishing One-Loop Vacuum Energy**"*
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_Abstract_

I will talk about a series of works on the classification of 4D 
non-supersymmetric asymmetric Type II orbifold which nonetheless have 
vanishing cosmological constant to at least some orders in string 
perturbation theory. These are engineered by the conservation of a 
supercharge-like operator in each individual sector in the orbifold sum, 
despite the overall explicit breaking of spacetime SUSY. By turning this 
condition into a precise representation theory problem, we can fully 
classify the allowed point groups, both Abelian and non-Abelian. Along 
the way, we computed bordism groups $\Omega_3^{\text{Spin}}(BG)$ for a 
variety of crystallographic groups G to ensure the absence of global 
anomalies..
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*To attend via Zoom kindly register here:*
https://zoom.us/meeting/register/kOCQYCffQbaynpxmVHUjdA


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*Thursday, 17 September *2026, at *16:00* - *Lagrange* Lecture Hall 
-*https://indico.ictp.it/event/11498/ <https://indico.ictp.it/event/11498/>*

Pietro Pelliconi (Princeton University)


*“Yukawa–SYK in Quantum Simulators: from Open-System Dynamics to 
Holographic Signatures**"*
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_Abstract_

Current state-of-the art control over target Hamiltonians in optical 
platforms opens to the possibility of simulating quantum many-body 
systems in a programmable way. Within this landscape, systems with 
holographic duals are particularly appealing targets, as their rich 
phenomenology connects high-energy physics, condensed matter, and 
quantum dynamics.
In this talk, I will focus on the Yukawa-SYK model, a version of the 
celebrated SYK model comprising both bosons and fermions. I will first 
review its phenomenology, emphasizing its similarities to and 
differences from \mathcal{N}=1 SYK, and discuss prospects for 
realization in cold-atom platforms.
I will then focus on the intrinsic open-system dynamics of such 
platforms, where the bosons leak out of the simulator. While in general 
such open-system dynamics heats up the simulation away from the 
holographic regime, leaving an imprint on two-point functions and on 
scrambling, I will show that the strong coupling limit is hidden in the 
statistics of temporal correlations of the leaked bosons. In turn, this 
also quantifies the experimental cost of probing the thermal holographic 
regime, as the number of events required to access it grows 
exponentially with (inverse) temperature.
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*To attend via Zoom kindly register here:*
https://zoom.us/meeting/register/jGWAgPdQTrCMeeOCDG7img