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Season 15 Episode 3 PhD Seminar

→ Europe/Rome
Aula Conversi (VEF) and Zoom

Aula Conversi (VEF) and Zoom
Description

62th meeting of physics PhD seminar series

https://uniroma1.zoom.us/

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https://groups.google.com/u/1/a/uniroma1.it/g/phd-seminars

You can submit abstracts using the following link:

https://forms.gle/FAKjaQMUoy3ZwHEY9

    • 18:00 → 18:20
      The price to pay for enhanced physico-chemical insight: Nonlinear ultrafast spectroscopy 20m

      In this talk, we introduce the fundamental concept at the core of spectroscopy: the radiation-matter interaction. We then introduce the concept of polarization: starting from its basic formulation and moving toward refined versions that include nonlinearity and ultrafast effects. This is a crucial step for understanding how to gain more detailed information about our samples.
      The power of these techniques comes at a cost. The three major challenges are: the coexistence of multiple background phenomena, high noise levels, and a strong sensitivity to instrumental parameters and imperfections. Our job is to mitigate as much as possible these issues.

      Speaker: Pietro Lussana
      phdseminar.pptx
    • 18:20 → 18:30
      Dicussion 10m
    • 18:30 → 18:45
      Coffee break 15m
    • 18:45 → 19:05
      Testing gravity with compact objects 20m

      Gravitational waves have opened an unprecedented window onto the strong-field, dynamical regime of gravity, allowing us to probe the nature of compact objects and test General Relativity in extreme conditions. In this talk, I will explore how deviations from standard predictions may arise in binary coalescences, focusing on two key phases: the inspiral and the ringdown.

      During the inspiral, the presence of additional scalar charges can modify the dynamics and imprint characteristic signatures in the waveform, offering a sensitive probe of beyond-GR scenarios. Moving to the post-merger phase, I will discuss advances in ringdown modelling, including nonlinear effects and potential departures from the classical quasi-normal mode picture.

      Speaker: Lodovico Capuano
    • 19:05 → 19:15
      Discussion 10m