Ghost freedom and string actions
Abstract
We prove that the effective action for a closed bosonic string propagating in a massless background is ghost free to all orders in α'.
- Publication:
-
Physics Letters B
- Pub Date:
- April 1988
- DOI:
- 10.1016/0370-2693(88)90186-4
- Bibcode:
- 1988PhLB..203..378J