The Benefits of Stress: Resolution of the Lifshitz Singularity

Jul, 2012
16 pages
Published in:
  • Phys.Rev.D 86 (2012) 106008
e-Print:
Report number:
  • SLAC-PUB-15119,
  • SU-ITP-12-18

Citations per year

2012201520182021202402468101214
Abstract: (arXiv)
Through the AdS/CFT correspondence, Lifshitz spacetimes describe field theories with dynamical scaling (z1z \neq 1). Although curvature invariants are small, the Lifshitz metric exhibits a null singularity in the IR with a large tidal force that excites string oscillator modes. However, Lifshitz is not a vacuum solution of the Einstein equations -- the metric is supported by nontrivial matter content which must be taken into account in analyzing the propagation of test objects. In this paper, we consider the interaction of a string with a D0-brane density in the IR which supports a class of UV-complete z=2z=2 Lifshitz constructions. We show that string/D-brane scattering in the Regge limit slows the string significantly, preventing divergent mode production and resolving the would-be singularity in string propagation.
Note:
  • 16 pages/ v2: new references added
  • 11.25.Tq
  • 04.60.Cf
  • space-time: Lifshitz
  • string: interaction
  • singularity
  • propagation
  • scattering
  • Regge
  • energy loss