2023-01-23

UTAPwiki/セミナー/初期宇宙・相対論速報

Speaker: Kohei Kamada

Title: Particle interaction induced CMB polarization

Abstract:
It is well known that the CMB polarization is induced by the Thomson scattering
of the CMB photon with electrons.
As long as we consider the standard interaction between them, we do not expect that
no CMB B-mode and V-mode are induced unless we take into account the tensor perturbation.
In this talk, however, starting from the introduction of the quantum treatment of the CMB polarization,
I will explain how the CMB B-mode or V-mode can be induced by non-standard interactions.
If time allows, I will try to show the recent discussion on the possibility of the CMB B/V-mode
induction from the cosmic neutrino background.

References:
[1] Arthur Kosowsky, “Cosmic microwave background polarization”,
Annals Phys. 246 (1996) 49-85, astro-ph/9501045
[2] Nicola Bartolo, Ahmad Hoseinpour, Sabino Matarrese, Giorgio Orlando, Moslem Zarei
"CMB Circular and B-mode Polarization from New Interactions”
Phys.Rev.D 100 (2019) 4, 043516, arXiv:1903.04578 [hep-ph]
[3] Maxim Dvornikov, and Victor B. Semikoz
"Birefringence of electromagnetic waves in the relic neutrino gas”
JCAP 03 (2021) 028, arXiv:2011.14883
[4] R. Mohammadi, J. Khodagholizadeh, M. Sadegh, A. Vahedi, S.S. Xue,
“Cross-correlation Power Spectra and Cosmic Birefringence of the CMB via Photon-neutrino Interaction”,
arXiv:2109.00152 [hep-ph]