Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Ott Vilson"'
Publikováno v:
The Fifteenth Marcel Grossmann Meeting.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5770520c8a7363bb9c7014e3e38ca6f5
https://doi.org/10.1142/9789811258251_0056
https://doi.org/10.1142/9789811258251_0056
Autor:
Ott Vilson, Mihkel Rünkla
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 between the metric and the scalar field. The symmetric teleparallel constr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70d8dbf250201af310ba2d3755176ac2
http://arxiv.org/abs/1805.12197
http://arxiv.org/abs/1805.12197
Einstein's celebrated theory of gravitation can be presented in three forms: general relativity, teleparallel gravity, and the rarely considered before symmetric teleparallel gravity. Extending the latter, we introduce a new class of theories where a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14ef12429d42308d29a2e3559768796a
We compute the parametrized post-Newtonian parameter $\gamma$ in the case of a static point source for multiscalar-tensor gravity with completely general nonderivative couplings and potential in the Jordan frame. Similarly to the single massive field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c8743e4f00237d442c7fc8f3e4eccc
http://arxiv.org/abs/1607.02356
http://arxiv.org/abs/1607.02356
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 formulations of slow-roll regimes in the Einstein and Jordan frames usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6216e7239e18661fe27d3bf4a1e914a3
Autor:
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 scalar field. We recall the objects that are invariant with respect to a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9552d80f895c1fa67742a694eb88c00
http://arxiv.org/abs/1509.02481
http://arxiv.org/abs/1509.02481
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 scalar field redefinition explicitly distinct from the coupling functio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aaf71c063519e02877dd66784796c8c
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 investigate the conditions under which its field equations and the paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfe9a0e644afafef01c73f09ef9ba01f
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 reparametrization of the scalar fields, the theory can be presented in diffe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d98de177000f7ec5157b681e493dc06c
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 different conformal frames and parametrizations. In this work we argue, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::284b1100b67660e2e67d42257b371820
http://arxiv.org/abs/1411.1947
http://arxiv.org/abs/1411.1947