Generation of circular polarization of the CMB

Zarei, Moslem; Bavarsad, Ehsan; Haghighat, M.; Mohammadi, Rohoollah; Motie, Iman; Rezaei, Zahra

doi:10.1103/physrevd.81.084035

Cited by 61 publications

(51 citation statements)

References 38 publications

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“…polarization by the Compton scattering is possible [11]. Meanwhile, it is recently shown that the photons of a linearly polarized laser beam can acquire circular or B-mode linear polarization by scattering off active neutrinos via a parity violation process.…”

Section: Jhep02(2017)003mentioning

confidence: 99%

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

Tizchang¹,

Batebi²,

Haghighat³

et al. 2017

J. High Energ. Phys.

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It is known that the linearly polarized photons can partly transform to circularly polarized ones via forward Compton scattering in a background such as the external magnetic field or noncommutative space time. Based on this fact we explore the effects of the NC-background on the scattering of a linearly polarized laser beam from an intense beam of charged leptons. We show that for a muon/electron beam flux ε µ,e ∼ 10 12 /10 10 TeV cm −2 sec −1 and a linearly polarized laser beam with energy k 0 ∼1 eV and average powerP laser 10 3 KW, the generation rate of circularly polarized photons is about R V ∼ 10 4 /sec for noncommutative energy scale Λ NC ∼ 10 TeV. This is fairly large and can grow for more intense beams in near future.

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Section: Jhep02(2017)003mentioning

confidence: 99%

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

Tizchang¹,

Batebi²,

Haghighat³

et al. 2017

J. High Energ. Phys.

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“…Sawyer has discussed the CP due to photon-photon interactions mediated by neutral hydrogen background [16]. In addition, some new physics effects can induce the CP of the CMB [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Circular polarization of the CMB: A probe of the first stars

De¹,

Tashiro²

2015

Phys. Rev. D

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While it is revealed that the Cosmic Microwave Background (CMB) is linearly polarized at 10 % level, it is predicted that there exists no significant intrinsic source for circular polarization (CP) in the standard cosmology. However, during the propagation through a magnetised plasma, the CP of the CMB could be produced via the Faraday conversion (FC). The FC converts a pre-existing linear polarization into CP in presence of a magnetic field with relativistic electrons. In this paper, we focus on the FC due to supernova remnants of the first stars, also called Pop III stars. We derive an analytic form for the angular power spectrum of the CP of the CMB generated by the general FC. We apply this result to the case of the FC triggered by explosions of the first stars and evaluate the angular power spectrum, C V V l . We show that the amplitude of l(l + 1)C V V l /(2π) > 10 −2 µK 2 for l > 100, with only one Pop III star per halo, the age of Pop III SN remnants as 10 4 years and frequency of CMB observation as 1 GHz. We expect the CP of the CMB to be a very promising probe of the yet unobserved first stars, primarily due to the expected high signal along with an unique frequency dependence.

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“…[10,11], the angular power spectrum of CMB circular polarizations and relevant correlations are studied in the case that circular polarization is generated by photon-electron scattering in the presence of magnetic fields. I is shown that Lorentz symmetry violation in some extension of standard model for particle physics [9,12] and an axion-like cosmological pseudoscalar field [13] can generate the CMB circular polarization. Ref.…”

mentioning

confidence: 99%

“…[8,9] present the role of background magnetic fields in producing the CMB circular polarization, and ∆φ F C ∼ 10 −19 for micro gauss magnetic fields. In refs.…”

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confidence: 99%

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Euler-Heisenberg Lagrangian and photon circular polarization

Motie

Xue

2012

EPL

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Considering the effective Euler-Heisenberg Lagrangian, i.e., non-linear photonphoton interactions, we study the circular polarization of electromagnetic radiation based on the time-evolution of Stokes parameters. To the leading order, we solve the Quantum Boltzmann Equation for the density matrix describing an ensemble of photons in the space of energy-momentum and polarization states, and calculate the intensity of circular polarizations. Applying these results to a linear polarized thermal radiation, we calculate the circular polarization intensity, and discuss its possible relevance to the circular polarization intensity of the Cosmic Microwave Background radiation. : 73.50.Fq, 42.50.Xa, 98.70.Vc Introduction. Modern cosmological observations of the cosmic microwave background (CMB) radiation provide important evidences to understand our Universe. Cosmological informations encoded in the CMB radiation concerns not only temperature fluctuations and the spectrum of anisotropy pattern, but also the intensity and spectrum PACS

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Generation of circular polarization of the CMB

Cited by 61 publications

References 38 publications

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

Using an intense laser beam in interaction with muon/electron beam to probe the noncommutative QED

Circular polarization of the CMB: A probe of the first stars

Euler-Heisenberg Lagrangian and photon circular polarization

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