Space - like branes

Feb, 2002
23 pages
Published in:
  • JHEP 04 (2002) 018
e-Print:
Report number:
  • HUTP-02-A001

Citations per year

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Abstract:
Scalar field theories with appropriate potentials in Minkowski space can have time-dependent classical solutions containing topological defects which correspond to S-branes - i.e. branes all of whose tangential dimensions are spacelike. It is argued that such S-branes arise in string theory as time-dependent solutions of the worldvolume tachyon field of an unstable D-brane or D-brane-anti-D-brane pair. Using the known coupling of the spacetime RR fields to the worldvolume tachyon it is shown that these S-branes carry a charge, defined as the integral of a RR field strength over a sphere (containing a time as well as spatial dimensions) surrounding the S-brane. This same charge is carried by SD-branes, i.e. Dirichlet branes arising from open string worldsheet conformal field theories with a Dirichlet boundary condition on the timelike dimension. The corresponding SD-brane boundary state is constructed. Supergravity solutions carrying the same charges are also found for a few cases.
  • membrane model
  • field theory: scalar
  • field equations: solution
  • solution: classical
  • string model
  • tachyon
  • supergravity
  • dimension: 4
  • dimension: 11
  • domain wall