paper

Heavy quarks in a magnetic field

arXiv:1111.0314 · doi:10.1007/JHEP04(2012)096

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.

(v3) Misprints corrected, discussion on moving horizons improved and enhanced

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