A gravitating Yang-Mills instanton

Apr 3, 2017
17 pages
Published in:
  • JHEP 07 (2017) 011
  • Published: Jul 4, 2017
e-Print:
Report number:
  • IFT-UAM-CSIC-17-019

Citations per year

201420162018202020201065
Abstract: (Springer)
We present an asymptotically flat, spherically symmetric, static, globally regular and horizonless solution of SU(2)-gauged N=1 \mathcal{N}=1 , d = 5 supergravity. The SU(2) gauge field is that of the BPST instanton. We argue that this solution, analogous to the global monopoles found in d = 4 N=2 \mathcal{N}=2 and N=4 \mathcal{N}=4 gauged supergravities, describes the field of a single string-theory object which does not contribute to the entropy of black holes when we add it to them and show that it is, indeed, the dimensional reduction on T5^{5} of the gauge 5-brane. We investigate how the energy of the solution is concentrated as a function of the instanton’s scale showing that it never violates the hoop conjecture although the curvature grows unboundedly in the zero scale limit.
Note:
  • 19 pages, 4 figures. Some misprints corrected
  • Black Holes
  • Black Holes in String Theory
  • p-branes
  • Superstring Vacua
  • instanton: Yang-Mills
  • black hole: entropy
  • monopole: global
  • symmetry: rotation
  • supergravity
  • dimensional reduction