English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We extend the four-dimensional de Rham-Gabadadze-Tolley (dRGT) massivegravity model to a general scalar massive-tensor theory in arbitrarydimensions, coupling a dRGT massive graviton to multiple scalars and allowingfor generic kinetic and mass matrix mixing between the massive graviton and thescalars, and derive its Hamiltonian formulation and associated constraintsystem. When passing to the Hamiltonian formulation, two different sectorsarise: a general sector and a special sector. Although obtained via differentways, there are two second class constraints in either of the two sectors,eliminating the BD ghost. However, for the special sector, there are stillghost instabilities except for the case of two dimensions. In particular, forthe special sector with one scalar, there is a "second BD ghost".

Generalized massive gravity in arbitrary dimensions and its Hamiltonian formulation