The Atacama Cosmology Telescope: A Measurement of the Primordial Power Spectrum

Hložek, Renée; Dunkley, Joanna; Addison, Graeme E.; Appel, John W.; Bond, J. R.; Carvalho, C. S.; Das, Sudeep; Devlin, Mark J.; Dünner, Rolando; Essinger‐Hileman, T.; Fowler, Joseph W.; Gallardo, Patricio A.; Hajian, Amir; Halpern, M.; Hasselfield, Matthew; Hilton, Matthew; Hincks, Adam D.; Hughes, John P.; Irwin, K. D.; Klein, Jeff; Kosowsky, Arthur; Marriage, Tobias A.; Marsden, Danica; Menanteau, F.; Moodley, Kavilan; Niemack, Michael D.; Nolta, Michael R.; Page, Lyman A.; Parker, Lucas; Partridge, B.; Rojas, Felipe; Sehgal, Neelima; Sherwin, Blake D.; Sievers, Jonathan; Spergel, David N.; Staggs, Suzanne T.; Swetz, Daniel S.; Switzer, Eric R.; Thornton, Robert J.; Wollack, Edward J.

doi:10.1088/0004-637x/749/1/90

Cited by 114 publications

(125 citation statements)

References 84 publications

(96 reference statements)

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“…Silk damping of the small-scale anisotropies prohibits using multipoles larger than max ∼ 2000 to extract information about initial conditions. This limits the number of modes available in the CMB to 85) which is nearly saturated by the recent Planck measurements. More modes are in principle accessible through large-scale structure measurements.…”

Section: Non-gaussianitymentioning

confidence: 99%

“…The stress-energy tensor arising from (2.84) corresponds to a perfect fluid with pressure P and energy density ρ = 2XP ,X − P , where P ,X denotes a derivative with respect to X. The Friedmann equation and the Klein-Gordon equation are 85) so the inflationary parameter (1.4) becomes…”

Section: Non-slow-roll: K-inflationmentioning

confidence: 99%

“…where ∇ 2 is the Laplacian on X 6 , and the effects of local sources are parameterized as 85) with T M N the stress-energy tensor derived from S loc . In the absence of local sources, i.e.…”

Section: Equations Of Motion-the Trace Of the Ten-dimensional Einstementioning

confidence: 99%

“…In this section, we present a few ideas for how this might nevertheless be achieved. 85 In §5.6.1, we describe trapped inflation [622], in which dissipative dynamics arises from repeated production of particles or strings. We explain how trapped inflation could plausibly arise in the class of string compactifications discussed in the context of axion monodromy inflation in §5.4.2, albeit in a slightly different parameter regime.…”

Section: Inflating With Dissipationmentioning

confidence: 99%

“…85 An effective field theory of dissipative inflation was constructed in [793]. Related work on warm inflation [794] is reviewed in [795] (see also [767,796]).…”

Section: Trapped Inflationmentioning

confidence: 99%

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Inflation and String Theory

2015

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Section: Non-gaussianitymentioning

confidence: 99%

Section: Non-slow-roll: K-inflationmentioning

confidence: 99%

Section: Equations Of Motion-the Trace Of the Ten-dimensional Einstementioning

confidence: 99%

Section: Inflating With Dissipationmentioning

confidence: 99%

“…85 An effective field theory of dissipative inflation was constructed in [793]. Related work on warm inflation [794] is reviewed in [795] (see also [767,796]).…”

Section: Trapped Inflationmentioning

confidence: 99%

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Inflation and String Theory

2015

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Triumphs and tribulations of ΛCDM, the double dark theory

Primack

2012

Annalen der Physik

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ΛCDM has become the standard cosmological model because its predictions agree so well with observations of the cosmic microwave background and the large-scale structure of the universe. However ΛCDM has faced challenges on smaller scales. Some of these challenges, including the "angular momentum catastrophe" and the absence of density cusps in the centers of small galaxies, may be overcome with improvements in simulation resolution and feedback. Recent simulations appear to form realistic galaxies in agreement with observed scaling relations. Although dark matter halos start small and grow by accretion, the existence of a star-forming band of halo masses naturally explains why the most massive galaxies have the oldest stars, a phenomenon known as known as galactic "downsizing." The discovery of many faint galaxies in the Local Group is consistent with ΛCDM predictions, as is the increasing evidence for substructure in galaxy dark matter halos from gravitational lensing flux anomalies and gaps in cold stellar streams. However, the "too big to fail" (TBTF) problem challenges ΛCDM. It arose from analysis of the Acquarius and Via Lactea very high-resolution ΛCDM simulations of dark matter halos like that of the Milky Way. Each simulated halo has ∼ 10 subhalos that were so massive and dense that they would appear to be too big to fail to form lots of stars. The TBTF problem is that none of the observed satellite galaxies of the Milky Way or Andromeda have stars moving as fast as would be expected in these densest subhalos. This may indicate the need for a more complex theory of dark matter -or perhaps just better understanding of dark matter simulations and/or baryonic physics.

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Re‐examining astrophysical constraints on the dark matter model

Brooks

2014

Annalen der Physik

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Recent high-resolution simulations that include Cold Dark Matter (CDM) and baryons have shown that baryonic physics can dramatically alter the dark matter structure of galaxies. These results modify our predictions for observed galaxy evolution and structure. Given these updated expectations, it is timely to re-examine observational constraints on the dark matter model. A few observations exist that may indirectly trace dark matter, and may help confirm or deny possible dark matter models. Warm Dark Matter (WDM) and Self-Interacting Dark Matter (SIDM) are currently the favorite alternative models to CDM. Constraints on the WDM particle mass require it to be so heavy that WDM is nearly indistinguishable from CDM. The best observational test of SIDM is likely to be in the dark matter distribution of faint dwarf galaxies, but there is a lack of theoretical predictions for galaxy structure in SIDM that account for the role of baryons.

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The Atacama Cosmology Telescope: A Measurement of the Primordial Power Spectrum

Cited by 114 publications

References 84 publications

Inflation and String Theory

Inflation and String Theory

Triumphs and tribulations of ΛCDM, the double dark theory

Re‐examining astrophysical constraints on the dark matter model

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