189 citations · 538 across the 9 of their papers we have counts for
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Family of scalar-nonmetricity theories of gravity
Mihkel Rünkla, Ott Vilson
We extend the class of recently formulated scalar-nonmetricity theories by coupling a five-parameter nonmetricity scalar to a scalar field and considering a mixed kinetic term betw…
Nonmetricity formulation of general relativity and its scalar-tensor extension
Laur Järv, Mihkel Rünkla, Margus Saal +1
Einstein's celebrated theory of gravitation can be presented in three forms: general relativity, teleparallel gravity, and the rarely considered before symmetric teleparallel gravi…
Post-Newtonian parameter for multiscalar-tensor gravity with a general potential
Manuel Hohmann, Laur Jarv, Piret Kuusk +2
We compute the parametrized post-Newtonian parameter in the case of a static point source for multiscalar-tensor gravity with completely general nonderivative couplings and pot…
Invariant slow-roll parameters in scalar-tensor theories
Piret Kuusk, Mihkel Rünkla, Margus Saal +1
A general scalar-tensor theory can be formulated in different parametrizations that are related by a conformal rescaling of the metric and a scalar field redefinition. We compare f…
The formalism of invariants in scalar-tensor and multiscalar-tensor theories of gravitation
Laur Jarv, Piret Kuusk, Margus Saal +1
We give a brief summary of the formalism of invariants in general scalar-tensor and multiscalar-tensor gravities without derivative couplings. By rescaling of the metric and repara…
Some remarks concerning invariant quantities in scalar-tensor gravity
Ott Vilson
The aim of the current paper is to clarify some aspects of the formalism used for describing the scalar-tensor gravity characterized by four arbitrary local functionals of the scal…
Invariant quantities in the multiscalar-tensor theories of gravitation
Piret Kuusk, Laur Jarv, Ott Vilson
The aim of the current paper is to study the multiscalar-tensor theories of gravity without derivative couplings. We construct a few basic objects that are invariant under a Weyl r…
Transformation properties and general relativity regime in scalar-tensor theories
Laur Jarv, Piret Kuusk, Margus Saal +1
We consider first generation scalar-tensor theories of gravitation in a completely generic form, keeping the transformation functions of the local rescaling of the metric and the s…
Parametrizations in scalar-tensor theories of gravity and the limit of general relativity
Laur Jarv, Piret Kuusk, Margus Saal +1
We consider a general scalar-tensor theory of gravity and review briefly different forms it can be presented (different conformal frames and scalar field parametrizations). We inve…
Invariant quantities in the scalar-tensor theories of gravitation
Laur Jarv, Piret Kuusk, Margus Saal +1
We consider the general scalar-tensor gravity without derivative couplings. By rescaling of the metric and reparametrization of the scalar field, the theory can be presented in dif…