22 citations · 66 across the 8 of their papers we have counts for
8 papers
When Tiny Halos Stir Spacetime: Gravitational Waves from Fifth-Force Mergers
Xinpeng Wang, Yifan Lu, Zachary S. C. Picker +2
Dark matter fermions interacting via attractive fifth forces mediated by a light mediator can form dark matter halos in the very early universe. We show that bound systems composed…
Neutrino masses, matter-antimatter asymmetry, dark matter, and supermassive black hole formation explained with Majorons
Yifan Lu, Zachary S. C. Picker, Alexander Kusenko +1
The spontaneous breaking of a global lepton number symmetry can result in a (pseudo) Nambu-Goldstone boson known as the Majoron. We study a singlet Majoron model that couples to tw…
Incentivizing supplemental math assignments and using AI-generated hints is associated with improved exam performance
Yifan Lu, K. Supriya, Shanna Shaked +2
Inequities in student access to trigonometry and calculus are often associated with racial and socioeconomic privilege, and often influence introductory physics course performance.…
Black Holes from Fermi Ball Collapse
Yifan Lu, Zachary S. C. Picker, Stefano Profumo +1
Fermi balls are non-topological solitons that can naturally form in an early universe containing a dark sector with heavy fermions and an attractive interaction mediated by a light…
Direct-collapse supermassive black holes from relic particle decay
Yifan Lu, Zachary S. C. Picker, Alexander Kusenko
We investigate the formation of high-redshift supermassive black holes (SMBHs) via the direct collapse of baryonic clouds, where the unwanted formation of molecular hydrogen is suc…
Feeding plankton to whales: high-redshift supermassive black holes from tiny black hole explosions
Yifan Lu, Zachary S. C. Picker, Alexander Kusenko
Recent observations of the high-redshift universe have uncovered a significant number of active galactic nuclei, implying that supermassive black holes (SMBHs) would have to have b…
Structure Formation after Reheating: Supermassive Primordial Black Holes and Fermi Ball Dark Matter
Marcos M. Flores, Yifan Lu, Alexander Kusenko
In the presence of (relatively) long-range forces, structures can form even during the radiation dominated era, leading to compact objects, such as Fermi balls or primordial black…
Subleading corrections to the free energy in a theory with scaling
James T. Liu, Yifan Lu
We numerically investigate the sphere partition function of a Chern-Simons-matter theory with gauge group at level coupled to three adjoint chiral multiplets that is du…