Julien LESGOURGUES (.pdf)

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1) isocurvature modes: what are they ? how can they be generated ? how do they affect CMB and LSS ? 2) observational constraints all modes together adiabatic mode plus one isocurvature mode more specific models
What are they? they various perfect fluids with no energy exchanges (e.g. after BBN) : conservation of number density: true also LOCALLY (flat slicing gauge, uniform H) ⇒ conserved quantity on super-Hubble scales: Wands et al. 00 Wands & Lyth 03
Page 1: Isocurvature Modes after WMAP WMAP-
Page 5 and 6: general case: What are they? they
Page 7 and 8: What are they? they ⇒ set of init
Page 9 and 10: How can they be generated ? Isocurv
Page 11 and 12: How can they be generated ? 1) Topo
Page 13 and 14: 1) adiabatic versus CDI : Sachs-Wol
Page 15 and 16: How do they affect CMB and LSS? 1)
Page 17 and 18: How do they affect CMB and 2) adiab
Page 25 and 26: Post-WMAP Post WMAP (1 st st yr yr)
Page 29 and 30: Post-WMAP Post WMAP (1 st st yr 2)
Page 37 and 38: Post-WMAP Post WMAP (1 st yr) bound
Page 39: Conclusions 1) NO EVIDENCE FOR ISOC

Julien LESGOURGUES (.pdf)

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