Schild's Null Strings in Flat and Curved Backgrounds

Abstract

Schild's null (tensionless) strings are discussed in certain flat and curved backgrounds. We find closed, stationary, null strings as natural configurations existing on the horizons of spacetimes which possess such null hypersurfaces. Examples of these are obtained in Schwarzschild and Rindler spacetimes. A dynamic null string is also identified in Rindler spacetime. Furthermore, a general prescription (with explicit examples) is outlined by means of which null string configurations can be obtained in a large class of cosmological backgrounds.

RevTex 3.0, 14 Pages, no figures

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• Tensionless String in the Notoph Background
• Null Strings in Kerr Spacetime
• Twistor representation of null two-surfaces
• Null Branes in Curved Backgrounds
• Optical equations for null strings
• Null Cosmic Strings: Scattering by Black Holes, Optics and Spacetime Content
• Null Strings and Membranes in Demianski-Newman Background
• String Propagation in Bianchi Type I models: Dynamical anisotropy Damping and Consequences