TY - JOUR
T1 - Relativistic stars in f(R) gravity, and absence thereof
AU - Kobayashi, Tsutomu
AU - Maeda, Kei Ichi
PY - 2008/9/8
Y1 - 2008/9/8
N2 - Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although nonrelativistic stellar configurations can be constructed, we argue that relativistic stars cannot be present in such f(R) theories. This problem appears due to the dynamics of the effective scalar degree of freedom in the strong gravity regime. Our claim thus raises doubts on the viability of f(R) models.
AB - Several f(R) modified gravity models have been proposed which realize the correct cosmological evolution and satisfy solar system and laboratory tests. Although nonrelativistic stellar configurations can be constructed, we argue that relativistic stars cannot be present in such f(R) theories. This problem appears due to the dynamics of the effective scalar degree of freedom in the strong gravity regime. Our claim thus raises doubts on the viability of f(R) models.
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U2 - 10.1103/PhysRevD.78.064019
DO - 10.1103/PhysRevD.78.064019
M3 - Article
AN - SCOPUS:51849116840
VL - 78
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 6
M1 - 064019
ER -