Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-03-20
JHEP 0806:005,2008
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX 2e, 66 pages, 26 figures
Scientific paper
10.1088/1126-6708/2008/06/005
We explore various aspects of the motion of heavy quarks in strongly-coupled gauge theories, employing the AdS/CFT correspondence. Building on earlier work by Mikhailov, we study the dispersion relation and energy loss of an accelerating finite-mass quark in N=4 super-Yang-Mills, both in vacuum and in the presence of a thermal plasma. In the former case, we notice that the application of an external force modifies the dispersion relation. In the latter case, we find in particular that when a static heavy quark is accelerated by an external force, its rate of energy loss is initially insensitive to the plasma, and there is a delay before this rate approaches the value derived previously from the analysis of stationary or late-time configurations. Following up on work by Herzog et al., we also consider the evolution of a quark and antiquark as they separate from one another after formation, learning how the AdS/CFT setup distinguishes between the singlet and adjoint configurations, and locating the transition to the stage where the deceleration of each particle is properly accounted for by a constant friction coefficient. Additionally, we examine the way in which the energy of a quark-antiquark pair moving jointly through the plasma scales with the quark mass. We find that the velocity-dependence of the screening length is drastically modified in the ultra-relativistic region, and is comparable with that of the transition distance mentioned above.
Chernicoff Mariano
Guijosa Alberto
No associations
LandOfFree
Acceleration, Energy Loss and Screening in Strongly-Coupled Gauge Theories does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Acceleration, Energy Loss and Screening in Strongly-Coupled Gauge Theories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Acceleration, Energy Loss and Screening in Strongly-Coupled Gauge Theories will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-586838