2 papers
astro-ph.CO2021
Gauge-Invariant Tensor Perturbations Induced from Baryon-CDM Relative Velocity and the B-mode Polarization of the CMB
James Gurian, Donghui Jeong, Jai-chan Hwang +1
At second-order, scalar perturbations can source traceless and transverse perturbations to the metric, called induced gravitational waves (IGW). The apparent gauge-dependence of th…
astro-ph.CO2018
Exploring suppressed long-distance correlations as the cause of suppressed large-angle correlations
C. J. Copi, J. Gurian, A. Kosowsky +2
The absence of large-angle correlations in the map of cosmic microwave background temperature fluctuations is among the well-established anomalies identified in full-sky and cut-sk…