Deep inelastic scattering off a plasma with flavour from D3-D7 brane model

TL;DR

This paper studies how flavor currents propagate in a strongly coupled plasma using a holographic D3-D7 brane model, revealing temperature-dependent absorption phenomena related to quark constituents.

Contribution

It provides a holographic analysis of flavor current propagation in a finite-temperature plasma, highlighting the temperature-dependent behavior of plasma structure functions.

Findings

High temperature leads to non-zero plasma structure functions for high-energy currents.

Low temperature results in zero quark contribution to plasma structure functions.

Absorption of flavor current by quarks occurs at high temperatures.

Abstract

We investigate the propagation of a space-like flavour current in a strongly coupled N = 2 super Yang-Mills plasma using the D3-D7 brane model at finite temperature. The partonic contribution to the plasma structure functions is obtained from the imaginary part of the retarded current-current commutator. At high temperatures we find a non-vanishing result, for a high energy current, indicating absorption of the flavour current by the quark constituents of the plasma. At low temperatures there is no quark contribution to the plasma structure functions.