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gr-qc2018★ 39 cited
New Weyl-invariant vector-tensor theory for the cosmological constant
Pavel Jiroušek, Alexander Vikman
We introduce a new Weyl-invariant and generally-covariant vector-tensor theory with higher derivatives. This theory can be induced by extending the mimetic construction to vector f…
gr-qc2018★ 37 cited
Recovering P(X) from a canonical complex field
Eugeny Babichev, Sabir Ramazanov, Alexander Vikman
We study the correspondence between models of a self-interacting canonical complex scalar field and P(X)-theories/shift-symmetric k-essence. Both describe the same background cosmo…