Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu

Details Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu

2011-11-11

arxiv.org/abs/1111.2647v3

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 Pages. We found a mistake in our first version -- the Horava-type models of EPJC 71, 1657 (2011) do have a spatial diffeomo

Scientific paper

The partial Hamiltonian analysis of the actions presented in the paper by M. Chaichian, M. Oksanen, A. Tureanu (Eur. Phys. J. C 71, 1657 (2011)) is incorrect; the true algebra of constraints differs from what they claim for their choice of momentum constraint. Our blind acceptance of the correctness of their constraint algebra led us to conclude, wrongly, that a few of the models presented by the authors (sharing the same constraint algebra) are not invariant under spatial diffeomorphism. We "proved" this by using Noether's second theorem (see first version of the paper), but we then found a mistake in our calculations. The differential identity of spatial diffeomorphism is intact, therefore, their actions are invariant; but in this case, the spatial diffeomorphism gauge symmetry cannot be compatible with their algebra. We now explicitly demonstrate that the actual algebra of constraints is different, and briefly describe how it affects the generator and gauge transformations of the fields.

Affiliated with

Also associated with

No associations

Rating

Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comment on "Arnowitt--Deser--Misner representation and Hamiltonian analysis of covariant renormalizable gravity" by M. Chaichian, M. Oksanen, A. Tureanu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-139209