6 papers
Limits on Velocity Recovery from the PURSUE Sensor Videos
Jacob Haqq-Misra, Ravi Kopparapu
This paper analyzes the 112 sensor videos released by the U.S. Department of War under the PURSUE (Presidential Unsealing and Reporting System for UAP Encounters) initiative. Redac…
WIMP Meets ALP: Coherent Freeze-Out of Dark Matter
Steven Ferrante, Maxim Perelstein, Bingrong Yu
We consider the cosmological history of a weakly interacting massive particle (WIMP) coupled to a light axion-like particle (ALP) via a quadratic coupling. Although the coupling is…
Sommerfeld Enhancement from Quantum Forces for Dark Matter
Steven Ferrante, Maxim Perelstein, Bingrong Yu
Quantum forces are long-range interactions that arise only at the loop level. In this work, we study the Sommerfeld enhancement of dark matter (DM) annihilation cross sections caus…
Collider Searches for Near-Continuum Dark Matter
Steven Ferrante, Lillian Luo, Maxim Perelstein +1
We study collider constraints on the near-continuum dark matter model, in which the dark sector consists of a tower of closely spaced states with weak-scale masses coupled to the S…
Conformal Freeze-in Dark Matter: 5D Dual and Phase Transition
Lillian Luo, Maxim Perelstein
Conformal Freeze-in (COFI) scenario postulates a dark sector described by a conformal field theory (CFT) at energies above the ``gap scale" in the keVMeV range. At the gap scale…
Conformal Freeze-In from Neutrino Portal
Sungwoo Hong, Maxim Perelstein, Taewook Youn
We study a scenario where a dark sector, described by a Conformal Field Theory (CFT), interacts with the Standard Model through the neutrino portal. In this setup, conformal invari…