Search Publications
Updated constraints from the effective field theory analysis of the BOSS power spectrum on early dark energy
Poulin, Vivian; Smith, Tristan L.; Simon, Théo +1 more
Analyses of the full shape of the Baryon Oscillation Spectroscopic Survey (BOSS) DR12 power spectrum using the one-loop prediction from the effective field theory of large-scale structures (EFTBOSS) have led to new constraints on extensions to the Λ cold dark matter model, such as early dark energy (EDE), which has been suggested as a resolution t…
Reference frames in general relativity and the galactic rotation curves
Frutos-Alfaro, F.; Costa, L. Filipe O.; Natário, José +1 more
The physical interpretation of the exact solutions of the Einstein field equations is, in general, a challenging task, part of the difficulties lying in the significance of the coordinate system. We discuss the extension of the International Astronomical Union (IAU) reference system to the exact theory. It is seen that such an extension, retaining…
Constraints on monopole-dipole potential from tests of gravity
Poddar, Tanmay Kumar; Pachhar, Debashis
An ultralight axion like particle (ALP) can mediate a macroscopic force with long-range monopole-dipole interactions between the Earth and the Sun, if the Earth is treated as a polarized source. Because of the geomagnetic field, there exists an estimated 1042 polarized electrons within the Earth. These electrons, in a polarized state, c…