Twistor variational principle for null strings

Details Twistor variational principle for null strings Twistor variational principle for null strings

2001-04-12

arxiv.org/abs/hep-th/0104117v1

Nucl.Phys.Proc.Suppl.102:83-86,2001

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, no figures, ReVTeX4b; based on a talk given at SSQFT'2000, to be published in Nucl Phys B Conf Suppl

Scientific paper

10.1016/S0920-5632(01)01540-7

I present a twistor action functional for null 2-surfaces (null strings) in 4D Minkowski spacetime. The proposed formulation is reparametrization invariant and free of algebraic and differential constraints. Proposed approach results in derivation of evolution equations for the null strings. It is shown that non-geodesic null strings are contained in the presented formalism. A discussion of the problem of minimality for 2-surfaces with degenerate induced metric is given. I also speculate on the possible description of strings (time-like 2-surfaces) and conventional (space-like) 2-surfaces.

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