Heavy quarks in a magnetic field

TL;DR

This paper investigates the dynamics of a heavy charged quark in a magnetic field within a strongly coupled conformal field theory, revealing dissipative spiral motion and unique world-sheet geometries with a time-dependent horizon.

Contribution

It provides a novel analysis of heavy quark motion in magnetic fields using holography, highlighting dissipative behavior and specific world-sheet geometries in AdS/CFT.

Findings

Quark exhibits dissipative spiral motion in magnetic field.

World-sheet geometry has a locally AdS_2 structure with a time-dependent horizon.

Connections established with other circular string motions.

Abstract

The motion of a heavy charged quark in a magnetic field is analyzed in the vacuum of strongly coupled CFT. The motion of the quark is dissipative. It moves in spiral until it eventually comes to rest. The world-sheet geometry is locally AdS_2 but has a time dependent horizon. The string profile in the static gauge extends from the boundary till a point where an embedding singularity exists. Connections with other circular string motions are established.