A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND<i>B</i>-MODE POLARIZATION POWER SPECTRUM AT SUB-DEGREE SCALES WITH POLARBEAR

Akiba, Y.; Anthony, A. E.; Arnold, K.; Atlas, M.; Barron, Darcy; Boettger, D.; Borrill, J.; Chapman, Scott; Chinone, Yuji; Dobbs, M.; Elleflot, T.; Errard, Josquin; Fabbian, Giulio; Feng, Chang; Flanigan, D.; Gilbert, A.; Grainger, W.; Halverson, N. W.; Hasegawa, M.; Hattori, K.; Hazumi, M.; Holzapfel, W. L.; Hori, Y.; Howard, J.; Hyland, P.; Inoue, Yuki; Jaehnig, G.; Jaffe, A. H.; Keating, Brian; Kermish, Z.; Keskitalo, R.; Kisner, T. S.; Jeune, M. Le; Lee, A. T.; Leitch, E. M.; Linder, Eric V.; Lungu, Marius; Matsuda, Frederick; Matsumura, Tomotake; Meng, Xiaofan; Miller, Nathan J.; Morii, H.; Moyerman, S.; Myers, Michael J.; Navaroli, M.; Nishino, Hitoshi; Orlando, A.; Paar, H. P.; Peloton, J.; Poletti, D.; Quealy, E.; Rebeiz, Gabriel M.; Reichardt, Christian; Richards, P. L.; Ross, C.; Schanning, I.; Schenck, D. E.; Sherwin, Blake D.; Shimizu, A.; Shimmin, C. O.; Shimon, Meir; Siritanasak, P.; Smecher, G.; Spieler, H.; Stebor, N.; Steinbach, B.; Stompor, R.; Suzuki, Aritoki; Takakura, S.; Tomaru, T.; Wilson, B.; Yadav, Amit; Zahn, O.

doi:10.1088/0004-637x/794/2/171

Cited by 237 publications

(95 citation statements)

References 58 publications

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“…In this paper, we perform a comprehensive global fitting on r and the isotropic/anisotropic rotation angles with current CMB data. Besides the low CMB data (PLANK [33], BICEP2/Keck Array [32]), we also adopt the latest CMB data with high such as the POLARBEAR [34], SPTpol [35,36], ACTPol [17]. Our results show that isotropic and anisotropic rotation angles generate B mode in different ways.…”

Section: Introductionmentioning

confidence: 99%

Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data

Zhai

et al. 2020

Physics Letters B

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Cosmological CPT violation will rotate the polarized direction of CMB photons, convert partial CMB E mode into B mode and vice versa. It will generate non-zero EB, TB spectra and change the EE, BB, TE spectra. This phenomenon gives us a way to detect the CPT-violation signature from CMB observations, and also provides a new mechanism to produce B mode polarization. In this paper, we perform a global analysis on tensor-to-scalar ratio r and polarization rotation angles based on current CMB datasets with both low (Planck, BICEP2/Keck Array) and high (POLARBEAR, SPTpol, ACTPol). Benefited from the high precision of CMB data, we obtain the isotropic rotation angleᾱ = −0.01 • ± 0.37 • at 68% C.L., the variance of the anisotropic rotation angles C α (0) < 0.0032 rad 2 , the scale invariant power spectrum D αα ∈[2,350] < 4.71 × 10 −5 rad 2 and r < 0.057 at 95% C.L.. Our result shows that with the polarization rotation effect, the 95% upper limit on r gets tightened by 17%.

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Section: Introductionmentioning

confidence: 99%

Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data

Zhai

et al. 2020

Physics Letters B

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“…Nonetheless, there is still some information in the CMB that has not yet been exploited to its full potential, and which could help overcome some of the aforementioned limitations. Important examples are the observation of primordial polarization B-modes (e.g., [9][10][11]), the Bispectrum (e.g., [12,13]) and higher N-point correlators (e.g., [14]), or observations of CMB secondary anisotropies (e.g., [15]) and lensing effects (e.g., [16][17][18])…”

Section: Introductionmentioning

confidence: 99%

The synergy between CMB spectral distortions and anisotropies

Lucca

Schöneberg

Hooper

et al. 2020

J. Cosmol. Astropart. Phys.

159

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Spectral distortions and anisotropies of the CMB provide independent and complementary probes to study energy injection processes in the early universe. Here we discuss the synergy between these observables, and show the promising future of spectral distortion missions to constrain both exotic and non-exotic energy injections. We show that conventional probes such as Big Bang Nucleosynthesis and CMB anisotropies can benefit from and even be surpassed by future spectral distortion experiments. For this, we have implemented a unified framework within the Boltzmann code class to consistently treat the thermal evolution of photons and baryons. Furthermore, we give an extensive and pedagogical introduction into the topic of spectral distortions and energy injections throughout the thermal history of the universe, highlighting some of their unique features and potential as a novel probe for cosmology and particle physics.1 This quantity should not be confused with the actual photon temperature Tγ , which may have a more complicated evolution. The precise normalization of Tz is arbitrary, but T0 ≡ Tz(0) will be chosen close to the actual temperature today, Tγ(0) = (2.7255 ± 0.0005)K [65,66], in order to have Tγ Tz at least in the late universe.2 Note that with perturbations in the PPSD this is not true anymore as shown in [51].

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“…The primary focus of current CMB research is the measurements of the so-called B-modes -the parity odd polarization patterns [7,8] that could be created by inflationary gravitational waves (GW) [8][9][10] as well as a harbinger of potentially new physics [11][12][13][14][15][16]. On ∼ 10 angular scales, or ∼ 1000, gravitational lensing by large scale structures generates B-modes [17] that were measured by POLARBEAR [18] and SPTPol [19] five years ago. The first measurements of B-modes on larger scales, ∼ 100, where the inflationary GW are expected to contribute the most, were made by BICEP2/Keck [20,21].…”

Section: Introductionmentioning

confidence: 99%

Future CMB constraints on cosmic birefringence and implications for fundamental physics

et al. 2019

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The primary scientific target of the ground and space based Cosmic Microwave Background (CMB) polarization experiments currently being built and proposed is the detection of primordial tensor perturbations. As a byproduct, these instruments will significantly improve constraints on cosmic birefringence, or the rotation of the CMB polarization plane. If convincingly detected, cosmic birefringence would be a dramatic manifestation of physics beyond the standard models of particle physics and cosmology. We forecast the bounds on the cosmic polarization rotation (CPR) from the upcoming ground-based Simons Observatory (SO) and the space-based LiteBIRD experiments, as well as a "fourth generation" ground-based CMB experiment like CMB-S4 and the mid-cost space mission PICO. We examine the detectability of both a stochastic anisotropic rotation field, as well as an isotropic rotation by a constant angle. CPR induces new correlations of CMB observables, including spectra of parity-odd type in the case of isotropic CPR, and mode-coupling correlations in the anisotropic rotation case. We find that LiteBIRD and SO will reduce the 1σ bound on the isotropic CPR from the current value of 30 arcmin to 1.5 and 0.6 arcmin, respectively, while a CMB-S4-like experiment and PICO will reduce it to ∼ 0.1 arcmin. The bounds on the amplitude of a scaleinvariant CPR spectrum will be reduced by one, two and three orders of magnitude by LiteBIRD, SO and CMB-S4-like/PICO, respectively. We discuss potential implications for fundamental physics by interpreting the forecasted bounds on CPR in terms of the corresponding constraints on pseudoscalar fields coupled to electromagnetism, primordial magnetic fields (PMF), and violations of Lorentz invariance. We find that CMB-S4-like and PICO can reduce the 1σ bound on the amplitude of the scale-invariant PMF from 1 nG to 0.1 nG, while also probing the magnetic field of the Milky Way. The upcoming experiments will also tighten bounds on the axion-photon coupling, with SO improving the bound from fa 50HI at present, where HI is the energy scale of inflation, to fa 500HI , and CMB-S4-like and PICO raising it to fa few×10 3 HI , placing stringent constraints on the string theory axions.

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A MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUNDB-MODE POLARIZATION POWER SPECTRUM AT SUB-DEGREE SCALES WITH POLARBEAR

Cited by 237 publications

References 58 publications

Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data

Joint constraint on primordial gravitational waves and polarization rotation angle with current CMB polarization data

The synergy between CMB spectral distortions and anisotropies

Future CMB constraints on cosmic birefringence and implications for fundamental physics

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