BICEP2/KECK ARRAY V: MEASUREMENTS OF<i>B</i>-MODE POLARIZATION AT DEGREE ANGULAR SCALES AND 150 GHz BY THE KECK ARRAY

Bicep,; Collaborations, Keck Array; Ade, Peter A. R.; Ahmed, Zeeshan; Aikin, R. W.; Alexander, K. D.; Barkats, D.; Benton, S. J.; Bischoff, C. A.; Bock, J. J.; Brevik, J. A.; Buder, I.; Bullock, E.; Buza, V.; Connors, J.; Crill, B. P.; Dowell, C. D.; Dvorkin, Cora; Duband, L.; Filippini, J. P.; Fliescher, S.; Golwala, S. R.; Halpern, M.; Hasselfield, Matthew; Hildebrandt, S. R.; Hilton, G. C.; Hristov, V. V.; Hui, H.; Irwin, K. D.; Karkare, K. S.; Kaufman, J. P.; Keating, Brian; Kefeli, S.; Kernasovskiy, S. A.; Kovac, J. M.; Kuo, Chao-Lin; Leitch, E. M.; Lueker, M.; Mason, P.; Megerian, K. G.; Netterfield, C. B.; Nguyen, Hien; O’Brient, R.; Ogburn, R. W.; Orlando, A.; Pryke, C.; Reintsema, C. D.; Richter, Steffen; Schwarz, R.; Sheehy, C. D.; Staniszewski, Z.; Sudiwala, R.; Teply, G. P.; Thompson, K. L.; Tolan, J. E.; Turner, Anthony; Vieregg, A. G.; Weber, A. C.; Willmert, J.; Wong, C. L.; Yoon, K. W.

doi:10.1088/0004-637x/811/2/126

Cited by 90 publications

(68 citation statements)

References 70 publications

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“…Figure 5 (right) shows the prediction in the (n s , r) plane. 10 The prediction is compatible with the region (in green) preferred by data at 68, 95% confidence level according to the latest combination from Planck, BICEP2/Keck [47,[51][52][53]. Next generation experiments could probe r down to few × 10 −3 .…”

Section: Inflationary Predictionssupporting

confidence: 69%

“…Light blue and light red mark the regions where gravity cannot be ignored in the Einstein frame. The light green contours are the 1,2σ best fit regions from Planck, BICEP2/Keck [47,[51][52][53].…”

Section: The Minimal Model For Dimensionless Single Field Inflationmentioning

confidence: 99%

“…To compare our predictions with experimental results we plot in the same figure also the contours of the 1,2 σ best-fit regions from the official combination of the BICEP2/Keck Array/Planck [47,[51][52][53]. The yellow line represents the quadratic approximation obtained in the limit β λ S (v s ) = 0 (see eq.…”

Section: Jhep05(2015)065mentioning

confidence: 99%

“…Right: predictions for the scalar spectral index n s and for the tensor/scalar ratio r with the same coding. The green area is favoured by a global fit of Planck, BICEP2/Keck [47,[51][52][53] assuming that the Higgs has a dominant initial vacuum expectation value [67], in our multifield context inflation starts only after that the field evolution has reached the attractor solution along which h is subdominant, as exemplified in figure 4b.…”

Section: Inflationary Predictionsmentioning

confidence: 99%

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Dynamically induced Planck scale and inflation

Kannike

Hütsi

Pizza

et al. 2015

J. High Energ. Phys.

158

136

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Theories where the Planck scale is dynamically generated from dimensionless interactions provide predictive inflationary potentials and super-Planckian field variations. We first study the minimal single field realisation in the low-energy effective field theory limit, finding the predictions n s ≈ 0.96 for the spectral index and r ≈ 0.13 for the tensor-toscalar ratio, which can be reduced down to ≈ 0.04 in presence of large couplings. Next we consider agravity as a dimensionless quantum gravity theory finding a multifield inflation that converges towards an attractor trajectory and predicts n s ≈ 0.96 and 0.003 < r < 0.13, interpolating between the quadratic and Starobinsky inflation. These theories relate the smallness of the weak scale to the smallness of inflationary perturbations: both arise naturally because of small couplings, implying a reheating temperature of 10 7−9 GeV. A measurement of r by Keck/Bicep3 would give us information on quantum gravity in the dimensionless scenario.

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Section: Inflationary Predictionssupporting

confidence: 69%

Section: The Minimal Model For Dimensionless Single Field Inflationmentioning

confidence: 99%

Section: Jhep05(2015)065mentioning

confidence: 99%

Section: Inflationary Predictionsmentioning

confidence: 99%

See 2 more Smart Citations

Dynamically induced Planck scale and inflation

Kannike

Hütsi

Pizza

et al. 2015

J. High Energ. Phys.

158

136

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“…Recently, initial measurements of the odd parity polarization pattern, B-mode, of the CMB were also reported. [2,3,4,5,6,7,8].…”

Section: Introductionmentioning

confidence: 99%

The Polarbear-2 and the Simons Array Experiments

et al. 2016

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We present an overview of the design and status of the POLARBEAR-2 and the Simons Array experiments. POLARBEAR-2 is a Cosmic Microwave Background polarimetry experiment which aims to characterize the arc-minute angular scale B-mode signal from weak gravitational lensing and search for the degree angular scale B-mode signal from inflationary gravitational waves. The receiver has a 365 mm diameter focal plane cooled to 270 milli-Kelvin. The focal plane is filled with 7,588 dichroic lenslet-antenna coupled polarization sensitive Transition Edge Sensor (TES) bolometric pixels that are sensitive to 95 GHz and 150 GHz bands simultaneously. The TES bolometers are read-out by SQUIDs with 40 channel frequency domain multiplexing. Refractive optical elements are made with high purity alumina to achieve high optical throughput. The receiver is designed to achieve noise equivalent temperature of 5.8 µK CMB √ s in each frequency band. POLARBEAR-2 will deploy in 2016 in the Atacama desert in Chile. The Simons Array is a project to further increase sensitivity by deploying three POLARBEAR-2 type receivers. The Simons Array will cover 95 GHz, 150 GHz and 220 GHz frequency bands for foreground control. The Simons Array will be able to constrain tensor-to-scalar ratio and sum of neutrino masses to σ (r) = 6 × 10 −3 at r = 0.1 and ∑ m ν (σ = 1) to 40 meV.

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Linear inflation from quartic potential

Kannike

Racioppi

Raidal

2016

J. High Energ. Phys.

115

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We show that if the inflaton has a non-minimal coupling to gravity and the Planck scale is dynamically generated, the results of Coleman-Weinberg inflation are confined in between two attractor solutions: quadratic inflation, which is ruled out by the recent measurements, and linear inflation which, instead, is in the experimental allowed region. The minimal scenario has only one free parameter -- the inflaton's non-minimal coupling to gravity -- that determines all physical parameters such as the tensor-to-scalar ratio and the reheating temperature of the Universe. Should the more precise future measurements of inflationary parameters point towards linear inflation, further interest in scale-invariant scenarios would be motivated.Comment: 19 pages, 7 figures, revised version published on JHE

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BICEP2/KECK ARRAY V: MEASUREMENTS OFB-MODE POLARIZATION AT DEGREE ANGULAR SCALES AND 150 GHz BY THE KECK ARRAY

Cited by 90 publications

References 70 publications

Dynamically induced Planck scale and inflation

Dynamically induced Planck scale and inflation

The Polarbear-2 and the Simons Array Experiments

Linear inflation from quartic potential

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