“School of Particles%20And%20Accelerator”
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| Paper IPM / Particles%20And%20Accelerator / 16174 |
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| Abstract: | |||||||||
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In the standard model of cosmology, the B-mode polarization of the cosmic microwave background can be generated due to the tensor perturbation of metric which is related to gravitational effects in the inflation epoch and scalar perturbation cannot explain B-mode polarization. We consider Compton scattering in the Non-Commutative framework and show that Compton scattering in presence of Non-Commutative background and scalar mode of perturbation, besides generating circularly polarized microwave, can lead to B-mode polarization of the Cosmic Microwave Background. We estimate that generated V-mode C_VlC
Vl
â
can be expressed as linearly polarized power spectrum C_PlC
Pl
â
as well as B-mode power spectrum C_BlC
Bl
â
as a function of C_VlC
Vl
â
. We show that C_VlC
Vl
â
(C_BlC
Bl
â
) for NC-scale _NC 20Î
NC
â
â¼20 TeV are in the range of (nK^2)O(nK
2
) ((pK^2)O(pK
2
)) and higher, respectively, which are in the range of observational data.
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