Space - like branes
Feb, 200223 pages
Published in:
- JHEP 04 (2002) 018
e-Print:
- hep-th/0202210 [hep-th]
Report number:
- HUTP-02-A001
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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
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