RT Journal Article
T1 Nonminimal scalar-tensor theories
A1 Ayuso, Ismael
A1 Ruiz Cembranos, José Alberto
AB 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.
PB Amer Physical Soc
SN 2470-0010
YR 2020
FD 2020-02-05
LK https://hdl.handle.net/20.500.14352/6075
UL https://hdl.handle.net/20.500.14352/6075
LA eng
NO © 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.
NO Ministerio de Economía y Competitividad (MINECO)/AEI/FEDER
NO Ministerio de Economía y Competitividad (MINECO)
NO Ministerio de Ciencia e Innovación (MICINN)/Consolider Ingenio
NO IDPASC
NO Fundação para a Ciência e a Tecnologia (FCT)/MCTES through national funds (PIDDAC)
DS Docta Complutense
RD 1 sept 2024