Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory

Details Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory

2011-11-13

arxiv.org/abs/1111.3026v2

Phys. Rev. D 85, 043512 (2012)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

32 pages, 2 figures, Matched with the published version

Scientific paper

10.1103/PhysRevD.85.043512

In this paper we study in detail the effect of our recently proposed model of parity and charge-parity (PCP) violating varying alpha on the Cosmic Microwave Background (CMB) photon passing through the intra galaxy-cluster medium (ICM). The ICM is well known to be composed of magnetized plasma. According to our model, the polarization and intensity of the CMB would be affected when traversing through the ICM due to non-trivial scalar photon interactions. We have calculated the evolution of such polarization and intensity collectively, known as the stokes parameters of the CMB photon during its journey through the ICM and tested our results against the Sunyaev-Zel'dovich (SZ) measurement on Coma galaxy cluster. Our model contains a PCP violating parameter, $\beta$, and a scale of alpha variation $\omega$. Using the derived constrained on the photon-to-scalar conversion probability, ${\bar P}_{\gamma \rightarrow \phi}$, for Coma cluster in ref.[34] we found a contour plot in the ($\omega,\beta$) parameter plane. The $\beta =0$ line in this parameter space corresponds to well-studied Maxwell-dilaton type models which has lower bound on $\omega \gtrapprox 6.4 \times 10^{9}$ GeV. In general, as the absolute value of $\beta$ increases, lower bound on $\omega$ also increases. Our model in general predicts the modification of the CMB polarization with a non-trivial dependence on the parity violating coupling parameter $\beta$. However, it is unconstrained in this particular study. We show that this effect can in principle be detected in the future measurements on CMB polarization such that $\beta$ can also be constrained.

Affiliated with

Also associated with

No associations

Rating

Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-340604