%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ETR8EH
%@archivingpolicy denypublisher denyfinaldraft
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JJ2G
%@usergroup administrator
%@usergroup banon
%@usergroup lattes
%@usergroup marciana
%3 probing the f.pdf
%B Physics Letters B
%X The direct observation of gravitational waves (GW) in the near future, and the corresponding determination of the number of independent polarizations, is a powerful tool to test general relativity and alternative theories of gravity. In the present work we use the NewmanPenrose formalism to characterize GWs in quadratic gravity and in a particular class of f(R) Lagrangians. We find that both quadratic gravity and the f(R) theory belong to the most general invariant class of GWs, i.e., they can present up to six independent polarizations of GWs. For a particular combination of the parameters, we find that quadratic gravity can present up to five polarizations states. On the other hand, if we use the Palatini approach for f(R) theories, GWs present only the usual two transverse-traceless polarizations such as in general relativity. Thus, we conclude that the observation of GWs can strongly constrain the suitable formalism for these theories.
%8 Aug.
%N 4
%T Probing the f(R)f(R) formalism through gravitational wave polarizations
%@electronicmailaddress alvesmes@das.inpe.br
%@secondarytype PRE PI
%K Gravitational wave polarizations, Modified theories of gravity.
%@group DAS-CEA-INPE-MCT-BR
%@group DAS-CEA-INPE-MCT-BR
%@group DAS-CEA-INPE-MCT-BR
%@e-mailaddress alvesmes@das.inpe.br
%@secondarykey INPE--PRE/
%F lattes: 2021264878089025 1 AlvesMiraArau:2009:PrFRFo
%@issn 0370-2693
%2 dpi.inpe.br/plutao@80/2009/12.01.11.32.48
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%P 401-406
%4 dpi.inpe.br/plutao@80/2009/12.01.11.32.47
%D 2009
%V 679
%@doi 10.1016/j.physletb.2009.08.005
%A Alves, Márcio Eduardo da Silva,
%A Miranda, Oswaldo Duarte,
%A Araujo, José Carlos Neves,
%@dissemination PORTALCAPES
%@area CEA