W. Linda Xu

weishuangxu [at] physics.harvard.edu

Research

My research has focused mostly on aspects of dark matter phenomenology, but I am generally interested in all aspects of BSM physics, particularly in a cosmological context.

Publications

[arXiv:1910.14669] Searching for Dark Photon Dark Matter with Cosmic Ray Antideuterons with Lisa Randall

We show that cosmic ray antideuteron detection experiments represent one of the best ways to search for hidden sector thermal relic dark matter, and in particular investigate a vector portal dark matter that annihilates via a massive dark photon.

[arXiv:1904.08949] Testing LCDM With Dwarf Galaxy Morphology with Lisa Randall

We consider methods to infer 3D morphological information on Local Group dwarf spheroidals, and test the fitness of CDM+hydrodynamics simulations to the observed galaxy shapes.

[arXiv:1802.06788] Probing sub-GeV Dark Matter-Baryon Scattering with Cosmological Observables with Cora Dvorkin and Andrew Chael

We derive new limits on the elastic scattering cross-section between baryons and dark matter using Cosmic Microwave Background data from the Planck satellite and measurements of the Lyman-alpha forest flux power spectrum from the Sloan Digital Sky Survey.

Teaching

A list of courses at Harvard for which I served as a Teaching Fellow:

Spring 2020 Physics 15a Mechanics and Special Relativity
Spring 2019 Physics 143a Quantum Mechanics I
Fall 2017 Physics 212 Graduate Cosmology
Spring 2017 Applied Physics 50b Electricity & Magnetism

In the summer of 2015 I served as a teaching assistant for the Summer Science Program, a nonprofit for high school students oriented towards astronomy.