TL;DR
This paper investigates how dilaton and axion fields affect electromagnetic wave propagation, revealing dilaton-induced amplification or attenuation and axion-induced polarization rotation, with observational constraints from the cosmic microwave background.
Contribution
It provides a detailed analysis of electromagnetic wave behavior in dilaton and axion fields and establishes observational bounds on dilaton variation from CMB data.
Findings
Dilaton field causes frequency-independent amplification or attenuation.
Axion field induces polarization rotation in electromagnetic waves.
CMB observations limit dilaton variation to less than 8 x 10^(-4).
Abstract
We study the electromagnetic wave propagation in the joint dilaton field and axion field. Dilaton field induces amplification/attenuation in the propagation while axion field induces polarization rotation. The amplification/attenuation induced by dilaton is independent of the frequency (energy) and the polarization of electromagnetic waves (photons). From observations, the agreement with and the precise calibration of the cosmic microwave background (CMB) to blackbody radiation constrains the fractional change of dilaton |{\Delta}{\psi}|/{\psi} to less than about 8 x 10^(-4) since the time of the last scattering surface of the CMB.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.