Gauge-invariant modification of Witten's open superstring
Autor: | Stuart Samuel, Olaf Lechtenfeld |
---|---|
Rok vydání: | 1988 |
Předmět: | |
Zdroj: | Physics Letters B. 213:431-438 |
ISSN: | 0370-2693 |
Popis: | A violation of gauge invariance in Witten's open superstring field theory has recently been discovered. We propose a modification which resolves this problem by avoiding the collision of picture-changing operators. Feynman rules for the modified, gauge-invariant theory are presented, including a useful representation for the Ramond propagator. All four-point amplitudes are off-shell finite, agree on-shell with the Polyakov approach and exhibit decoupling of spurious physical states. |
Databáze: | OpenAIRE |
Externí odkaz: |