Tensionless Strings from Worldsheet Symmetries

Understand

We revisit the construction of the tensionless limit of closed bosonic string theory in the covariant formulation in the light of Galilean conformal symmetry that rises as the residual gauge symmetry on the tensionless worldsheet.

• We relate the analysis of the fundamentally tensionless theory to the tensionless limit that is viewed as a contraction of worldsheet coordinates.
• Analysis of the quantum regime uncovers interesting physics.
• The degrees of freedom that appear in the tensionless string are fundamentally different from the usual string states.