nLab
Polyakov action

Contents

Idea

An action functional for sigma models with target space a pseudo-Riemannian manifold.

Properties

The Polyakov action is classically equivalent to the Nambu-Goto action.

References

The Polyakov action was introduced in

  • Alexander Polyakov,

    Quantum geometry of bosonic strings , Phys. Lett. B103 (1981) 207;

    Quantum geometry of fermionic strings , Phys. Lett. B103 (1981) 211

Revised on September 5, 2012 10:55:28 by Urs Schreiber (82.169.65.155)