Marco Baldi
Marco Baldi
Marco Baldi
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The fifth-force determines an “effective” violation of the Weak<br />
Equivalence Principle for CONSTANT and VARIABLE couplings<br />
R(k)/R CDM(k)<br />
1.0<br />
0.9<br />
0.8<br />
0.7<br />
0.6<br />
Tuesday, July 6, 2010<br />
CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM CDM<br />
EXP010a2<br />
EXP015a3<br />
EXP010e2<br />
EXP010e3<br />
EXP015e3<br />
Results (II): bias<br />
0.1 1.0 10.0 100.0<br />
k [ h Mpc -1 z=0.00000<br />
0.5<br />
]<br />
<strong>Marco</strong> <strong>Baldi</strong> - MGADS, Strasbourg 16 VI 2010<br />
GRAVITATIONAL BIAS<br />
Since baryons are not coupled<br />
they do not feel any fifth-force.<br />
Baryon and CDM perturbations<br />
grow with a different rate, and the<br />
two components develop a purely<br />
gravitational bias at all scales.<br />
The bias is enhanced by<br />
nonlinearities at small scales and<br />
grows with time.<br />
N=2x512 3 , L=80Mpc/h, Hydro
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