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Temperature versus acceleration : the Unruh effect for holographic models.

Paredes, Angel and Peeters, Kasper and Zamaklar, Marija (2009) 'Temperature versus acceleration : the Unruh effect for holographic models.', Journal of high energy physics., 2009 (04). 015.


We analyse the effect of velocity and acceleration on the temperature felt by particles and strings in backgrounds relevant in holographic models. First, we compare accelerated strings and strings at finite temperature. We find that for fixed Unruh temperature felt by the string endpoints, the screening length is smaller for the accelerated Wilson loop than for the static one in a thermal background of the same temperature; hence acceleration provides a ``more efficient'' mechanism for melting of mesons. Secondly, we show that the velocity-dependence of the screening length of the colour force, previously obtained from a moving Wilson loop in a finite temperature background, is not specific for the string, but is a consequence of the generic fact that an observer which moves with constant velocity in a black hole background measures a velocity-dependent temperature. Finally, we analyse accelerated particles and strings in the AdS black hole background, and show that these feel a temperature which increases as a function of time. As a byproduct of our analysis we find a global Minkowski embedding for the planar AdS black hole.

Item Type:Article
Additional Information:
Keywords:AdS-CFT and dS-CFT Correspondence, Gauge-gravity correspondence.
Full text:(AM) Accepted Manuscript
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Publisher statement:© SISSA 2009. Published by IOP Publishing for SISSA. This is an author-created, un-copyedited version of an article accepted for publication in Journal of High Energy Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at
Date accepted:No date available
Date deposited:06 May 2014
Date of first online publication:April 2009
Date first made open access:No date available

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