Tensionless strings, correspondence with SO(D,D) sigma model

Details Tensionless strings, correspondence with SO(D,D) sigma model Tensionless strings, correspondence with SO(D,D) sigma model

2005-02-12

arxiv.org/abs/hep-th/0502114v1

Phys.Lett. B615 (2005) 285-290

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 9 pages

Scientific paper

10.1016/j.physletb.2005.04.001

String theory with perimeter action is tensionless by its geometrical nature and has pure massless spectrum of higher spin gauge particles. I demonstrate that liner transformation of the world-sheet fields defines a map to the SO(D,D) sigma model equipped by additional Abelian constraint, which breaks SO(D,D) to a diagonal SO(1,D-1). The effective tension is equal to the square of the dimensional coupling constant of the perimeter action. This correspondence allows to view the perimeter action as a "square root" of the Nambu-Goto area action. The aforementioned map between tensionless strings and SO(D,D) sigma model allows to introduce the vertex operators in full analogy with the standard string theory and to confirm the form of the vertex operators introduced earlier.

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