Accioly, Antonio Jose [UNESP]Helayel-Neto, JoseScatena, Eslley [UNESP]Morais, JeffersonTurcati, RodrigoPereira-Dias, Bruno2013-09-302014-05-202013-09-302014-05-202011-11-21Classical and Quantum Gravity. Bristol: Iop Publishing Ltd, v. 28, n. 22, p. 13, 2011.0264-9381http://hdl.handle.net/11449/24372A sketch of a proof that new massive gravity-the massive 3D gravity model proposed by Bergshoeff, Hohm and Townsend (BHT)-is the only unitary system at the tree level that can be constructed by augmenting 3D general relativity through (curvature)(2)-terms is presented. Two interesting gravitational properties of the BHT model, namely, time dilation and time delay, which have no counterpart in the usual Einstein 3D gravity, are analyzed as well.13engArtigo10.1088/0264-9381/28/22/225008WOS:000296869700009Acesso restrito