Scalar field quintessence by cosmic Scalar field quintessence by cosmic shear shear constraints from VIRMOS-Descart and CFHTLS and future constraints from VIRMOS-Descart and CFHTLS and future prospects prospects July 2006, Barcelona IRGAC 2006 In collaboration with: I.Tereno, J.-P.Uzan, Y.Mellier, (IAP), L.vanWaerbeke (British Columbia U.), ... Carlo Schimd Carlo Schimd DAPNIA / CEA Saclay DAPNIA / CEA Saclay @ @ DUNE Team DUNE Team & Institut d’Astrophysique de Paris & Institut d’Astrophysique de Paris Based on: astro-ph/0603158 astro-ph/0603158
12
Embed
Scalar field quintessence by cosmic shear constraints from VIRMOS-Descart and CFHTLS and future prospects July 2006, Barcelona IRGAC 2006 In collaboration.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Scalar field quintessence by cosmic shearScalar field quintessence by cosmic shear
constraints from VIRMOS-Descart and CFHTLS constraints from VIRMOS-Descart and CFHTLS and future prospectsand future prospects
July 2006, Barcelona IRGAC 2006
In collaboration with: I.Tereno, J.-P.Uzan, Y.Mellier, (IAP), L.vanWaerbeke (British Columbia U.), ...
Carlo SchimdCarlo Schimd
DAPNIA / CEA Saclay DAPNIA / CEA Saclay @ @ DUNE TeamDUNE Team
& Institut d’Astrophysique de Paris& Institut d’Astrophysique de Paris
NLPm(k,z) = f[LPm(k,z)] e.g. Peacock & Dodds (1996) Smith et al. (2003)calibrated with CDM N-body sim, 5-10% agreementHuterer & Takada (2005)
QCDM QCDM GR GR
Poisson eq.
2
2
( )( , ) ( , )
( )
LIN LINm m lss
lss
D zP k z P k z
D z
...normalization to high-z (CMB):normalization to high-z (CMB):
the modes k enter in non-linear regime ( (k)1 ) at different time 3D non-linear power spectrum is modified 2D shear power spectrum is modified by k = / SK (z)
Ansatz:Ansatz: c, bias, c, etc. not so much dependent on cosmology at every z we can use them, provided we use the correct linear growth factor (defining the onset of the NL regime)...
**
Ria
zuelo
& U
zan (
2002
)C
.S., U
z an &
Ria
zuelo
(2
004)
*
* CMB can be taken into account at no cost
Q models:Q models: self-interacting scalar fieldminimally/non-minimally couled to g