prof. dr hab. Francesco Giacosa (Jan Kochanowski University/Goethe U Frankfurt): Bound state formation in a thermal gas

Name: prof. dr hab. Francesco Giacosa (Jan Kochanowski University/Goethe U Frankfurt): Bound state formation in a thermal gas
Start: 2021-05-21T10:15:00+02:00
End: 2021-05-21T11:00:00+02:00
Location: No location set

Friday May 21, 2021, 10:15 AM → 11:00 AM Europe/Warsaw

Description

Abstract:

We first recall the phase-shift approach to calculate the contribution of resonances to the pressure of a thermal gas. To this end, we shall make use of a solvable QM model (the so-called Lee model) and present some results for well-known resonances, such as the rho and the sigma mesons. Next, we discuss, upon using a QFT approach, the emergence of a bound state due to attractive interaction of (scalar) particles and we investigate how the bound state affects the pressure of the thermal gas of this system.

The talk is based on these publications:

2009.13547 [hep-ph]
1902.03203 [hep-ph]
1506.01260 [nucl-th]

Important: This seminar is remote only due to the COVID-19 regulations

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prof. dr hab. Francesco Giacosa (Jan Kochanowski University/Goethe U Frankfurt): Bound state formation in a thermal gas