Nonminimal scalar-tensor theories



Downloads per month over past year

Ayuso, Ismael and Ruiz Cembranos, José Alberto (2020) Nonminimal scalar-tensor theories. Physical review D, 101 (4). ISSN 2470-0010

[thumbnail of CembranosJAR78libre.pdf]

Official URL:


We compute the spectrum, mixing and interaction structure of scalar models with a general coupling to the scalar curvature. As it is well known the perturbative states of these theories are given by two massive spin-0 modes in addition to one massless spin-2 state. This latter mode can be identified with the standard graviton field. Indeed, it is possible to define an Einstein frame, where the dynamics of the massless spin-2 graviton is the one associated with the Einstein-Hilbert action. We explore systematically the interactions of all these degrees of freedom in the mentioned frame, since part of the coupling structure can be anticipated by geometrical arguments.

Item Type:Article
Additional Information:

© 2020 Amer Physical Soc.
We are thankful to J. Beltran Jimenez and A. de la Cruz-Dombriz for very useful comments. This work has been supported by MICINN and MINECO (Spain) projects No. FIS2011-23000, No. FPA2011-27853-C0201, No. FIS2014-52837-P and No. FIS2016-78859-P (AEI/FEDER, UE), Consolider-Ingenio MULTIDARK CSD2009-00064, the Grant No. PD/BD/114435/2016 from IDPASC and FCT/MCTES through national funds (PIDDAC) by the Grant No. UID/FIS/04434/2019 and by the Project No. PTDC/FIS-OUT/29048/2017.

Uncontrolled Keywords:Brans dicke theories; Model higgs boson; Nucleosynthesis constraints; Cosmological models; Relativistic theory; Modified gravity; Machs principle; Inflation; Supergravity; Symmetry.
Subjects:Sciences > Physics
ID Code:59296
Deposited On:17 Mar 2020 18:54
Last Modified:17 Mar 2020 18:54

Origin of downloads

Repository Staff Only: item control page