[RBRC seminar] Jet evolution in the Glasma: a light-front Hamiltonian approach

by Ms Dana Avramescu (Jyvaskyla U.)

Thursday 13 Aug 2026, 13:00 → 14:30 US/Eastern

2-160 (https://bnl.zoomgov.com/j/1600983728?pwd=RAD7OLcqre7Ycsp6JfFp6HAnpyLxex.1)

This seminar presents a quantum formalism for the real-time evolution of jets in the Glasma, the strong classical color fields formed in the early stages of heavy-ion collisions. Classical transport studies based on Wong's equations coupled to real-time lattice simulations have shown that these fields induce sizable momentum broadening for both jets and heavy quarks, motivating a fully quantum treatment. The first part addresses the foundations of this approach, focusing on gauge invariance in the definition of the momentum of a particle in a classical non-Abelian background field. The correspondence between Wong's equations and the Heisenberg equations of motion is established, showing that the kinetic momentum broadening receives non-trivial contributions from the transverse field components, even in the eikonal limit. The second part presents its realization within the time-dependent Basis Light-Front Quantization (tBLFQ) framework, where a high-energy quark evolves in the Glasma fields treated as a time-dependent external potential. The extracted transverse momentum broadening and jet quenching parameter agree with classical estimates, including the expected scaling with the saturation momentum. This approach will be extended to consider non-eikonal propagation and gluon emissions in the Glasma.

References: https://arxiv.org/abs/2604.08520, https://arxiv.org/abs/2605.10413