Convocazione ai seminari dei tre vincitori ex aequo della procedura selettiva per professore di II fascia -SSD PHYS-02/A (EX SSD FIS/02)
Aula Careri edificio Marconi CU013 1°Piano
Data 19.09.2025
Oratori:
Stephen Green ore 14.00
Claudio Andrea Manzari ore 15.00
Alessio Notari ore 16.00
Per coloro che fossero impossibilitati ad essere presenti vi è la possibilità di seguire tramite il collegamento zoom dell'aula.
https://uniroma1.zoom.us/j/85110453871?pwd=cFcrRGp2S1hpRTM1aVZhek43YXB2QT09
Titoli e Abstract dei seminari:
Stephen Green:
Title: Machine Learning for Gravitational Wave Science
Abstract:
Since 2015, the LIGO-Virgo-KAGRA network has reported over 200 gravitational-wave detections from merging black holes and neutron stars. These observations have informed our understanding of black hole astrophysics, cosmology, nuclear physics, and fundamental gravity. In the coming decade, new ground- and space-based observatories will detect far more---and more diverse---sources. Extracting science from these data requires both detailed theoretical predictions and fast, accurate inference. I will describe how simulation-based inference, powered by neural network density estimators, is reshaping gravitational-wave analysis. Once trained on simulated data, these models perform Bayesian inference in seconds. These methods also open the door to improved accuracy when trained on realistic noise. I will highlight recent advances in population studies, eccentric binary analyses, and binary neutron star inference, as well as theoretical work on strong-field gravity and ringdown modeling. These advances are transforming gravitational-wave science today and laying the foundation for tomorrow’s discoveries.
Claudio Andrea Manzari:
Title: Unsolved Puzzles in Particle Physics
Abstract:
I will explore two of the most profound open questions in particle physics, focusing on some exciting directions of my ongoing research activity: the strong CP problem and the flavor puzzle. I will begin with an overview of the strong CP problem, highlighting proposed solutions based on parity and time-reversal symmetries and their rich phenomenology, which can be probed at present and future collider experiments. I will then turn to the axion solution, including my recent proposal for a network of gamma-ray satellites, currently under construction, that could enable axion detection in the event of a galactic supernova. Finally, I will introduce the flavor puzzle and discuss the intriguing possibility that some fermion masses arise solely through quantum effects.
Alessio Notari:
Title: Primordial Gravitational Waves and Black Holes from the Early Universe
After broadly reviewing my research on the interplay between cosmology and fundamental physics, I focus on one line: primordial gravitational waves as probes of new physics in the Early Universe. I discuss gravitational wave production in theories with broken discrete symmetries which give rise to primordial domain walls and their impact on Pulsar Timing Arrays, which recently provided evidence for a gravitational-wave background. Finally, I explore primordial black hole formation from the collapse of regions surrounded by domain walls, the observational constraints, and their potential as dark matter candidates.