On the Tensionless Limit of Bosonic Strings, Infinite Symmetries and Higher Spins

Details On the Tensionless Limit of Bosonic Strings, Infinite Symmetries and Higher Spins On the Tensionless Limit of Bosonic Strings, Infinite Symmetries and Higher Spins

2003-05-19

arxiv.org/abs/hep-th/0305155v3

Nucl.Phys. B669 (2003) 159-172

Physics

High Energy Physics

High Energy Physics - Theory

1+17 pages. Typos corrected and references added

Scientific paper

10.1016/j.nuclphysb.2003.07.002

In the tensionless limit of string theory on flat background all the massive tower of states gets squeezed to a common zero mass level and the free theory is described by an infinite amount of massless free fields with arbitrary integer high spin. We notice that in this situation the very notion of critical dimension gets lost, the apparency of infinite global symmetries takes place, and the closed tensionless string can be realized as a constrained subsystem of the open one in a natural way. Moreover, we study the tensionless limit of the Witten's cubic sting field theory and find that the theory in such a limit can be represented as an infinite set of free arbitrary higher spin excitations plus an interacting sector involving their zero-modes only.

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