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Article overview
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Chiral description of ghost-free massive gravity | | Sergei Alexandrov
; Kirill Krasnov
; Simone Speziale
; | | Date: |
14 Dec 2012 | | Abstract: | We propose and study a new first order version of the ghost-free massive
gravity. Instead of metrics or tetrads, it uses a connection together with
Plebanski’s chiral 2-forms as fundamental variables, rendering the phase space
structure similar to that of SU(2) gauge theories. The chiral description
simplifies computations of the constraint algebra, and allows us to perform the
complete canonical analysis of the system. In particular, we explicitly compute
the secondary constraint and carry out the stabilization procedure, thus
proving that in general the theory propagates 7 degrees of freedom,
consistently with previous claims. Finally, we point out that the description
in terms of 2-forms opens the door to an infinite class of ghost-free massive
bi-gravity actions. | | Source: | arXiv, 1212.3614 | | Services: | Forum | Review | PDF | Favorites | |
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