منابع مشابه
Spacelike Branes
Scalar field theories with appropriate potentials in Minkowski space can have timedependent 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 Sbranes arise in string theory as time-dependent solutions of the worldvolume tachyon field of an unstable D-brane or D-brane-anti-D-brane p...
متن کاملSpacelike and Time Dependent Branes from DBI
Spacelike branes are new time-dependent systems to explore and it has been observed that related supergravity solutions can be obtained by analytically continuing known D-brane solutions. Here we show that analytic continuation of known solutions of the Dirac-Born-Infeld equations also lead to interesting analogs of time dependent gravity solutions. Properties of these new solutions, which are ...
متن کاملdS/CFT, CENSORSHIP, INSTABILITY OF HYPERBOLIC HORIZONS, AND SPACELIKE BRANES
Cosmic Censorship relies on the validity of an energy condition, usually taken to be the Dominant Energy Condition. The dS/CFT correspondence furnishes a context in which the DEC can be deduced and need not be assumed; on the other hand, naked singularities arise naturally in asymptotically deSitter spaces when the cosmological horizon has a hyperbolic structure, and there is evidence that the ...
متن کاملSpacelike intersection curve of three spacelike hypersurfaces in E 41
In this paper, we compute the Frenet vectors and the curvatures of the spacelike intersection curve of three spacelike hypersurfaces given by their parametric equations in four-dimensional Minkowski space E 1 .
متن کاملQuantum steering and spacelike separation.
In nonrelativistic quantum mechanics, measurements performed by separate observers are modeled via tensor products. In algebraic quantum field theory, though, local observables corresponding to spacelike separated parties are just required to commute. The problem of determining whether these two definitions of separation lead to the same set of bipartite correlations is known in nonlocality as ...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2002
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2002/04/018