Diego Saez-Gomez
Diego Saez-Gomez
Diego Saez-Gomez
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H(z = 0) = H 0 = 100 hkms −1 Mpc −1 ,h=0.71 ± 0.03 (5)<br />
Scalar-tensor representation of<br />
H (z) = κ2<br />
2<br />
ρ m<br />
f(r) gravity<br />
H 0 (1 + z)h(z) , → H (0) = κ2<br />
ρ 0 m = 3 2H 0 2 Ω0 m . (6)<br />
Nojiri-Odintsov model<br />
H (0) 0 (7)<br />
Ω m (z) , Ω f(R) (z) (8)<br />
n in viable modified Phase space gravity 15<br />
V + (φ) V − (φ) (9)<br />
1.6<br />
1.4<br />
1.2<br />
H 2 H 0<br />
2<br />
1.0<br />
0.8<br />
0.6<br />
.94 0.96 0.98 1.00<br />
(a)<br />
Φ<br />
0.4<br />
2.0 2.2 2.4 2.6 2.8 3.0<br />
The scalar field reaches its boundary, where (b) a sudden singularity occurs.<br />
Φ<br />
DSG, Class.Quant.Grav. 30 095008 (2013)