W-Infinity Symmetry of the Nambu-Goto String in 4 Dimensions

Details W-Infinity Symmetry of the Nambu-Goto String in 4 Dimensions W-Infinity Symmetry of the Nambu-Goto String in 4 Dimensions

1993-10-19

arxiv.org/abs/hep-th/9310121v1

Phys.Lett. B319 (1993) 457-465

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 12p

Scientific paper

10.1016/0370-2693(93)91751-8

We consider a bosonic string propagating in 4--dim Minkowski space. We show that in the orthonormal gauge the classical system exhibits a hidden $W_{\infty}$ chiral symmetry, arising from the equivalence of its transverse modes with the $SU(2)/U(1)$ coset model defined on the string world--sheet. Generalizations to other string backgrounds are proposed. We also define a Liouville--like transformation that maps solutions of the $SU(2)/U(1)$ coset model into the solution space of two decoupled Liouville theories. Inverting this transformation, however, remains an open problem.

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