CMB Cosmological Parameter Extraction

1
Early Late Inflation Theory cf. CMBLSS _at_
CITA
Concordance (pre-WMAP2) discordant notes. The
basic parameters LCDM with power law index and
no/little GW is concordant. Some discord ..
always. Extension to larger parameter lists. Are
current discordant notes statistically
significant, systematics, astrophysics,
fundamental physics? Add parameters theory
priors cost function, baroqueness, taste? r_ts
(lt.72/lt.36??), k_BSI, dn_s/dlnk, size_U/chi_U,
subdominant (isoc/adiab), z_reh (VMOs?) e.g.
Vaudrevange, Lewis, McDonald _at_ CITA/PI focus gp
soon Nolta WMAP2 Resolving (or celebrating)
discord with planned experiments. break
degeneracies of cosmic parameters planned
CMBext, with ext z-surveys, cl-gp surveys
(Sunyaev-Zeldovich/Opt/X/weaklens), weak lensing
LSS surveys, SN CMB High-L frontier TT near
term, cbipol, boom2Kpol, acbar forecasts. Long
term Apex, ACT, SPT, Quiet forecasts. CMB
Polarization EE/BB, High Low-L CBI, BOOM2K ,
DASI, CAPMap, WMAP2, BICEP, QUaD, Polarbear,
QUIET, AMiBA, Planck, CMBpol
2
Anomalies Systematics, Statistics, AstroPhysics
or Fundamental Physics?
anomalies _at_ low L 2,3 20-30 check_at_200, gt
600? ET checkmarks 2, 22, 222, 2222 Issues
L2,3 how low is the probability? Glitches?
non-WMAP data e.g. Acbar/CBI calibration CBI
anomalous power _at_ L gt 2000, Sunyaev Zeldovich
effect in the cosmic web is plausible if s8 if
0.9 (nonlinear gasdynamics) Statistical
isotropy broken on large scales?
3
Jan04 CMB data cf. good-fit LCDM uniform-accelera
tion model
4
String Theory Landscape _at_ Stanford
100
Perhaps 10 different vacua
5
single field inflation vs. WMAP1extext
WMAP1 Peiris et al. 2003
Each point is a viable slow-roll model, able to
sustain inflation for sufficient e-foldings to
solve the horizon problem and make the Universe
(nearly) flat BUT highly restricted.
Monte Carlo simulations using flow-equations
(Kinney 2002). slow-roll priors are artificial,
highly restrictive misleading about allowed
inflationary phase space. Equivalent to a power
series expansion of order 5, 6, 8 of histories.
CITA approach efficiently sampled inflation
acceleration histories (trajectories). Physics
priors NONE - all are allowed (constrain by
taste, e.g. allowed bumpiness). Only data can
decide, includes very weak priors like
anthropic data as well as high precision
CMBLSS. Monte Carlo simulation of acceleration
histories
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Potential of the Hybrid D3/D7 Inflation Model
String Theory Landscape Inflation
Phenomenology for CMBLSS
running index as simplest breaking (back to early
80s), radically broken scale invariance, 2-field
inflation, isocurvatures, Cosmic strings/defects,
compactification topology, other baroque
add-ons. subdominant String/Mtheory-motivated,
extra dimensions, brane-ology, reflowering of
inflaton/isocon models (includes curvaton),
modified kinetic energies, k-essence,
Dirac-Born-Infeld sqrt(1-momentum2), DBI in
the Sky Silverstein etal 2004, etc.
KKLT, KKLMMT
any acceleration trajectory will do?? q (ln
Ha) H(phi,) V(phi,) Measure?? anti-baroque
prior
14 std inflation parameters
many many more e.g. blind search for patterns
in the primordial power spectrum
7
Running of the Spectral Index Parameter Fits
Tegmark et al. astro-ph/0310723
Spergel et al. ApJS, 148, 175
Bond, Contaldi Pogosyan astro-ph/0310735
CBI VII, Readhead et al. astro-ph/0402359
CMB weak lens s8
CMB data only dns/dlnk lt0 in Jan03, Mar03
Mar04
8
PLANCK vs. WMAP4yr Ground based telescopes
(circa 2008)

• WMAP 4yr
• Ground-based telescopes pre-Planck
  ACT/SPT-like (bolometers) QUIET (HEMT arrays).
  Coverage assumed few of the sky (1000 sq
  deg) polarization included
• PLANCK (2007)

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END
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No running dn/dlnk0
Damped Lyman alpha system effect at small scales
increased WMAP errors at large scales of Slosar
Seljak 04
Systematic error budget? .. McDonald etal,
Haehnelt etal
11
acceleration trajectories, featured potentials,
expansions about uniform q(T) (aka
slow-roll-ology in the Hamilton-Jacobi/stochastic
inflation formulation works OK), the
nonlocal WKB approximation (Habib etal 02,04)
BContaldiKofmanSouradeepVaudrevange