3 papers
cond-mat.str-el2025
Emergent Pair Density Wave Order Across a Lifshitz Transition
Luhang Yang, Elbio Dagotto, Adrian E. Feiguin
We numerically investigate the telltale signs of pair-density-wave order (PDW) in the Kondo-Heisenberg chain by focusing on the momentum resolved spectrum in different parameter re…
cond-mat.str-el2020
Beyond perturbation theory: A time-dependent approach to inelastic scattering spectroscopies in- and away from equilibrium
Krissia Zawadzki, Luhang Yang, Adrian E. Feiguin
We propose a non-perturbative numerical approach to calculate the spectrum of a many-body Hamiltonian with time and momentum resolution by exactly recreating a scattering event usi…
cond-mat.str-el2020
From deconfined spinons to coherent magnons in an antiferromagnetic Heisenberg chain with long range interactions
Luhang Yang, Adrian E. Feiguin
We study the spectrum and the nature of the excitations of an antiferromagnetic (AFM) Heisenberg chain with staggered long range interactions, both numerically using the time-depen…