1 citations · 1 across the 5 of their papers we have counts for
5 papers
Logarithmic Wavelets for Dark Matter--Phonon Scattering
Xu-Xiang Li, Zhengkang Zhang
Phonon excitations in crystals are a promising detection channel for sub-GeV dark matter (DM), and anisotropic targets add directional sensitivity through the daily modulation of t…
Astrophysical Uncertainties in Sub-GeV Dark Matter Detection via Single Phonon Excitations
Xu-Xiang Li, Navaneetha Valsan, Zhengkang Zhang
We present the first systematic study of how local dark matter velocity distribution uncertainties propagate into direct detection rates for dark matter--single phonon scattering.…
Geometric Building Blocks of Effective Field Theory Amplitudes
Timothy Cohen, Xu-Xiang Li, Zhengkang Zhang
On-shell amplitudes are invariant under field redefinitions. Nonderivative field redefinitions have a natural interpretation as coordinate transformations on the target manifold. G…
An Effective Sphaleron Awakens
Xu-Xiang Li, Michael J. Ramsey-Musolf, Tuomas V. I. Tenkanen +1
Using thermal effective field theory, we present a self-consistent perturbative formulation of the Higgs phase sphaleron rate after a radiatively-induced first-order phase transiti…
The Geometric Universal One-Loop Effective Action
Xu-Xiang Li, Xiaochuan Lu, Zhengkang Zhang
We derive universal formulae for integrating out heavy degrees of freedom in scalar field theories up to one-loop level in terms of covariant quantities associated with the geometr…