2013/10/28 by Vitor Cardoso, Roberto Emparan, David Mateos +2
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Collision #Distortion (music) #Gauge (firearms) #Gauge theory #Gravitation #Gravitational wave #Pulsars and Gravitational Waves Research #Strong gravity #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep01(2014)138
published as JHEP 01 (2014) 138 · 65 pages, 18 figures
arxiv created 2013/10/28 · openalex publication_date 2014/01/01 · openalex created_date 2016/06/24 · arxiv updated 2022/03/07 · openalex updated_date 2026/08/05
We study the gravitational dual of a high-energy collision in a confining gauge theory. We consider a linearized approach in which two point particles traveling in an AdS-soliton background suddenly collide to form an object at rest (presumably a black hole for large enough center-of-mass energies). The resulting radiation exhibits the features expected in a theory with a mass gap: late-time power law tails of the form t^(-3/2), the failure of Huygens' principle and distortion of the wave pattern as it propagates. The energy spectrum is exponentially suppressed for frequencies smaller than the gauge theory mass gap. Consequently, we observe no memory effect in the gravitational waveforms. At larger frequencies the spectrum has an upward-stairway structure, which corresponds to the excitation of the tower of massive states in the confining gauge theory. We discuss the importance of phenomenological cutoffs to regularize the divergent spectrum, and the aspects of the full non-linear collision that are expected to be captured by our approach.