56 citations · 58 across the 2 of their papers we have counts for
5 papers
Wave Dark Matter Non-minimally Coupled to Gravity
Lingyuan Ji
We consider a model where a light scalar field (with mass ), conjectured to be dark matter, has a non-minimal coupling to gravity. In the non-relativistic l…
Standard Model Prediction for Cosmological 21cm Circular Polarization
Lingyuan Ji, Marc Kamionkowski, Keisuke Inomata
Before cosmic reionization, hydrogen atoms acquire a spin polarization quadrupole through interaction with the anisotropic 21-cm radiation field. The interaction of this quadrupole…
Reheating constraints to WIMPflation
Lingyuan Ji, Marc Kamionkowski
Analyses of inflation models are usually conducted assuming a specific range---e.g., --of the number of -folds of inflation. However, the analysis can al…
Direct millicharged dark matter cannot explain EDGES
Cyril Creque-Sarbinowski, Lingyuan Ji, Ely D. Kovetz +1
Heat transfer between baryons and millicharged dark matter has been invoked as a possible explanation for the anomalous 21-cm absorption signal seen by EDGES. Prior work has shown…
Strong Lensing of Gamma Ray Bursts as a Probe of Compact Dark Matter
Lingyuan Ji, Ely D. Kovetz, Marc Kamionkowski
Compact dark matter has been efficiently constrained in the M <~ 10 M_sun mass range by null searches for microlensing of stars in nearby galaxies. Here we propose to probe the mas…