Season 1 Episode 3 PhD Seminar

Wednesday 19 May 2021, 17:00 → 18:35 Europe/Rome

Zoom only

Lucas Tonetto Coimbra (Sapienza University of Rome)

3rd meeting of physics PhD seminar series

https://uniroma1.zoom.us/s/86265804296
Meeting ID: 862 6580 4296
Passcode: 240702

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17:00 → 17:05 Introduction

17:05 → 17:25 Testing Ultra-Light Bosons through Black Hole Superradiance

Several Standard Model and General Relativity's extensions predict the existence of exotic ultra-light bosons of arbitrary spin. Their coupling to ordinary matter is feeble and therefore are difficult to be tested through direct detection, making them ideal candidates for dark matter. The recent emergence of gravitational-wave astronomy and the growth of high-energy astrophysics observations give the opportunity of testing these exotic bosons through gravitational interactions. In particular, light-mass bosons are expected to trigger the extraction of energy and angular momentum from black holes (superradiance), therefore suggesting the idea of using black holes as particle-physics laboratories and detectors.

Speaker: Dr Giuseppe Lingetti (Università Sapienza)

presentazione.pdf

17:25 → 17:35 Discussion

17:35 → 17:55 Carrier Envelope Phase signatures in Thomson scattering Spectrum

Thomson scattering is the process where low energy laser photons are converted to high energy ones by colliding them on relativistic electrons. This process could be used to as a diagnostic tool to measure the properties of ultrashort and intense laser pulses in focus. Here we will investigate analytically & numerically how the carrier envelope phase of the laser pulse, i.e. the phase relative to the temporal profile, influences the spectrum of the emitted radiation.

Speaker: Marcel Ruijter (Istituto Nazionale di Fisica Nucleare)

PhD_Seminars_Marcel_Ruijter_Thomson_CEP.pdf

17:55 → 18:05 Discussion

18:05 → 18:35 Informal breakout sessions with speakers