Veronika E. Hubeny
String worldsheet for accelerating quark
Hubeny, Veronika E.; Semenoff, Gordon W.
Gordon W. Semenoff
We consider the AdS bulk dual to an external massive quark in SYM following an arbitrary trajectory on Minkowski background. While a purely outgoing boundary condition on the gluonic field allows one to express the corresponding string worldsheet in a closed form, the setup has curious consequences. In particular, we argue that any quark whose trajectory on flat spacetime approaches that of a light ray in the remote past (as happens e.g. in the case of uniform acceleration) must necessarily be accompanied by an anti-quark. This is puzzling from the field theory standpoint, since one would expect that a sole quark following any timelike trajectory should be allowed. We explain the resolution in terms of boundary and initial conditions. We analyze the configuration in global AdS, which naturally suggests a modification to the boundary conditions allowing for a single accelerated quark without accompanying anti-quark. We contrast this resolution with earlier proposals.
Hubeny, V. E., & Semenoff, G. W. (2015). String worldsheet for accelerating quark. Journal of High Energy Physics, 2015(10), Article 71. https://doi.org/10.1007/jhep10%282015%29071
|Journal Article Type||Article|
|Acceptance Date||Sep 30, 2015|
|Online Publication Date||Oct 12, 2015|
|Publication Date||Oct 31, 2015|
|Deposit Date||Apr 24, 2019|
|Publicly Available Date||Apr 24, 2019|
|Journal||Journal of High Energy Physics|
|Publisher||Scuola Internazionale Superiore di Studi Avanzati (SISSA)|
|Peer Reviewed||Peer Reviewed|
Published Journal Article
Publisher Licence URL
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
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