TY - JOUR
T1 - Generic f(R) theories and classicality of their scalarons
AU - Gannouji, Radouane
AU - Sami, M.
AU - Thongkool, I.
N1 - Funding Information:
We are indebted to A. Starobinsky for taking pain in reading through the draft and for making detailed comments on the theme of the Letter in his kind communication. M.S. thanks S. Nojiri, S. Panda, K. Bamba, R. Adhikari and Berry Christopher for useful discussions. M.S. is supported by JSPS long term visiting fellowship and thanks Kobayashi–Maskawa Institute for the Origin of Particles and the Universe for hospitality. M.S. is also supported by the Department of Science and Technology, India , under project No. SR/S2/HEP-002/2008 . The work of R.G. is supported by the Grant-in-Aid for Scientific Research Fund of the JSPS No. 10329 .
PY - 2012/9/19
Y1 - 2012/9/19
N2 - We study quantum stability bound on the mass of scalaron in generic theories of f(R) gravity. We show that in these scenarios, the scalaron mass increases faster with local density of the environment than one-loop quantum correction to it thereby leading to violation of quantum bound on the chameleon mass. The introduction of quadratic curvature corrections in the action are shown to stabilize the model.
AB - We study quantum stability bound on the mass of scalaron in generic theories of f(R) gravity. We show that in these scenarios, the scalaron mass increases faster with local density of the environment than one-loop quantum correction to it thereby leading to violation of quantum bound on the chameleon mass. The introduction of quadratic curvature corrections in the action are shown to stabilize the model.
UR - http://www.scopus.com/inward/record.url?scp=84865861415&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2012.08.015
DO - 10.1016/j.physletb.2012.08.015
M3 - Article
AN - SCOPUS:84865861415
SN - 0370-2693
VL - 716
SP - 255
EP - 259
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 2
ER -