Holographic Jets in an Expanding Plasma

TL;DR

This paper employs holographic duality to analyze the behavior of quark jets in an expanding plasma, deriving explicit solutions and key parameters like drag coefficient and jet penetration length in a strongly coupled regime.

Contribution

It provides explicit holographic solutions for quark jets in an expanding plasma and calculates their drag coefficients and penetration lengths, advancing understanding of jet quenching in such environments.

Findings

Derived explicit trailing string solutions in expanding plasma.

Calculated the drag coefficient for heavy quarks in this setting.

Estimated the maximum penetration length for ultrarelativistic light quark jets.

Abstract

We use the holographic principle to study quark jets with trailing strings in an expanding plasma that asymptotes Bjorken hydrodynamics. We make use of the fact that the trailing string is the locus of the light delay in bulk to obtain the explicit form for quark jets in the expanding plasma. From the trailing string solution we calculate the drag coefficient of a heavy quark in the strongly coupled expanding plasma. The energy scaling of the maximum penetration length of an ultrarelativistic light quark jet using light rays in bulk is estimated.