About
From a first principles QFT perspective, the problem of thermalization in heavy-ion collisions may appear to be intractable. However, at very high energies, a semi-classical "shockwave" description of ultrarelativistic nuclei (and their scattering) emerges, described by the Color Glass Condensate (CGC) EFT. We first discuss how such shockwaves form in QCD, and how they decay, and the rich insights provided by examining this process in the language of broken global symmetries. We then discuss multi-particle production in collisions of the shockwave coherent states. The radiated glue initially forms a far-from-equilibrium Glasma, which can be understood as a generalized Susskind-Glogower squeezed state. The subsequent evolution of the Glasma after it decoheres is characterized by turbulent IR and UV flows with universal features in common with ultracold atomic gases. We discuss some of the unresolved open questions in this description of thermalization in heavy-ion collisions.
00:00:00 Slide 1
00:02:05 Slide 2
00:02:59 Slide 3
00:03:20 Slide 4
00:04:15 Slide 5
00:05:10 Slide 6
00:06:20 Slide 7
00:07:00 Slide 8
00:08:26 Slide 9
00:09:19 Slide 10
00:11:57 Slide 11
The talk
Credits and licence
- Institution
- CERN
- Speaker
- Raju Mr Venugopalan
- Year
- 2026
- Language
- English
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Teens profiles and older, judged from what the source says about it. How courses are placed