Diego Saez-Gomez
Diego Saez-Gomez
Diego Saez-Gomez
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Cosmological evolution<br />
in viable f(R)<br />
Hu-Sawicki and Nojiri-Odintsov model<br />
Deceleration parameter<br />
Cosmological evolution in viable modified gravity 9<br />
q = −aä/ȧ 2 DSG, Class.Quant.Grav. 30 095008 (2013)<br />
0.4<br />
0.2<br />
0.0<br />
HS<br />
NO<br />
CDM<br />
0.5<br />
0.0<br />
HS<br />
NO<br />
CDM<br />
0.2<br />
0.4<br />
0.5<br />
0.6<br />
0.8<br />
1.0<br />
1.0<br />
1.0 0.5 0.0 0.5 1.0<br />
z<br />
"CDM initial (a) conditions<br />
1.0 0.5 0.0 0.5 1.0<br />
z<br />
Phantom (b) initial conditions<br />
Figure 3: Evolution of the deceleration parameter q = −aä/ȧ 2 for the models F HS (R) and F NO (R)
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