New ghost-free gravity Lagrangians with propagating torsion Academic Article uri icon

abstract

  • A new class of R2 type of actions without ghosts and tachyons is found in which both the vierbein field ea and the spin connection ab are independent and propagating fields. A complete set of spin-projection operators for ea and ab is constructed. The particle content of these actions and other R2 theories in the literature is given. The relation of this work to the interesting work of Neville is discussed. 1980 The American Physical Society.

published proceedings

  • Physical Review D

author list (cited authors)

  • Sezgin, E., & van Nieuwenhuizen, P.

citation count

  • 251

complete list of authors

  • Sezgin, E||van Nieuwenhuizen, P

publication date

  • June 1980