1.3k citations · 1.8k across the 6 of their papers we have counts for
3 papers · 1 filter
Gravitational freeze-in dark matter from Higgs Preheating
Ruopeng Zhang, Zixuan Xu, Sibo Zheng
Gravitational freeze-in is a mechanism to explain the observed dark matter relic density if dark matter neither couples to inflation nor to standard model sector. In this work, we…
Freeze-in Dark Matter via Lepton Portal: Hubble Tension and Stellar Cooling
Zixuan Xu, Shuai Xu, Ruopeng Zhang +1
We propose a new freeze-in dark matter candidate which feebly couples to the standard model charged leptons. The feeble interactions allow it (i) to freeze-in from the Standard Mod…
Fabrication of Specimens for Atom Probe Tomography Using a Combined Gallium and Neon Focused Ion Beam Milling Approach
Frances I. Allen, Paul T. Blanchard, Russell Lake +6
We demonstrate a new focused ion beam sample preparation method for atom probe tomography. The key aspect of the new method is that we use a neon ion beam for the final tip-shaping…