New instability of non-extremal black holes: spitting out supertubes

• Published in: The journal of high energy physics Vol. 2012; no. 2
• Main Authors: Chowdhury, Borun D., Vercnocke, Bert
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-02-2012; Springer Nature B.V; Springer
• Subjects: Angular momentum; Black holes; Classical and Quantum Gravitation; Decoupling; Elementary Particles; High energy physics; High Energy Physics - Theory; Motivation; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Relativity Theory; String Theory; Supersymmetry; Black Holes in String Theory; AdS-CFT Correspondence; Black Holes
• ISSN: 1029-8479; 1126-6708; 1029-8479
• DOI: 10.1007/JHEP02(2012)116

A
bstract
We search for stable bound states of non-extremal rotating three-charge black holes in five dimensions (Cvetic-Youm black holes) and supertubes. We do this by studying the potential of supertube probes in the non-extremal black hole background and find that generically the marginally bound state of the supersymmetric limit becomes metastable and disappears with non-extremality (higher temperature). However near extremality there is a range of parameters allowing for stable bound states, which have lower energy than the supertube-black hole merger. Angular momentum is crucial for this effect. We use this setup in the D1-D5 decoupling limit to map a thermodynamic instability of the CFT (a new phase which is entropically dominant over the black hole phase) to a tunnelinginstability of the black hole towards the supertube-black hole bound state. This generalizes the results of [
1
], which mapped an entropy enigma in the bulk to the dual CFT in a supersymmetric setup.