Improved BFT embedding having chain-structure

Yong-Wan Kim, Chang-Young Ee, Seung-Kook Kim, Young-Jai Park
2006 Physics Letters B  
We newly revisit the gauge non-invariant chiral Schwinger model with a=1 in view of the chain structure. As a result, we show that the Dirac brackets can be easily read off from the exact symplectic algebra of second-class constraints. Furthermore, by using an improved BFT embedding preserving the chain structure, we obtain the desired gauge invariant action including a new type of Wess-Zumino term.
doi:10.1016/j.physletb.2005.10.028 fatcat:jomdn4keibfbhh3p5setqdp2eq