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Pseudoscalar perturbations and polarization of the cosmic microwave background
Maxim Pospelov, Adam Ritz, Constantinos Skordis
We show that models of new particle physics containing massless pseudoscalar fields super-weakly coupled to photons can be very efficiently probed with CMB polarization anisotropie…
Quintessence Models and the Cosmological Evolution of alpha
Seokcheon Lee, Keith A. Olive, Maxim Pospelov
The cosmological evolution of a quintessence-like scalar field, phi, coupled to matter and gauge fields leads to effective modifications of the coupling constants and particle mass…
A Re-examination of the Re Bound on the Variation of Fundamental Couplings
Keith A. Olive, Maxim Pospelov, Yong-Zhong Qian +4
We reconsider the Re187 bound on the variation of the fine-structure constant. We combine the meteoritic measurement with several present-day lab measurements to firmly establish t…