A recent paper  claims that topologically massive gravity contains only chiral boundary excitations at a particular value of the Chern-Simons coupling. On the other hand, propagating bulk degrees of freedom with negative norm were found even at the chiral point in . The two references use very different methods, making comparison of their respective claims difficult. In this letter, we use the method of  to construct a tower of physical propagating bulk states satisfying standard AdS boundary conditions. Our states have finite norm, with sign opposite to that of right-moving boundary excitations. Our results thus agree with  and disagree with .
- AdS-CFT correspondence
- Models of quantum gravity
ASJC Scopus subject areas
- Nuclear and High Energy Physics