6533b7dafe1ef96bd126ee0e
RESEARCH PRODUCT
Evolution of initial stage fluctuations in the glasma
Pablo Guerrero-rodríguezTuomas Lappisubject
PhysicsPower seriesquark-gluon plasmaField (physics)Nuclear Theory010308 nuclear & particles physicskvarkki-gluoniplasmaPhase (waves)FOS: Physical sciencesCharge (physics)Function (mathematics)Collision01 natural sciences114 Physical sciencesNuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)nuclear physics0103 physical sciencesGraph (abstract data type)Proper timeStatistical physicsydinfysiikka010306 general physicsrelativistic heavy-ion collisionsdescription
We perform a calculation of the one- and two-point correlation functions of energy density and axial charge deposited in the glasma in the initial stage of a heavy ion collision at finite proper time. We do this by describing the initial stage of heavy ion collisions in terms of freely evolving classical fields whose dynamics obey the linearized Yang-Mills equations. Our approach allows us to systematically resum the contributions of high momentum modes that would make a power series expansion in proper time divergent. We evaluate the field correlators in the McLerran-Venugopalan model using the glasma graph approximation, but our approach for the time dependence can be applied to a general four-point function of the initial color fields. Our results provide analytical insight into the preequilibrium phase of heavy ion collisions without requiring a numerical solution to the Yang-Mills equations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-07-16 |