3 citations · 4 across the 6 of their papers we have counts for
6 papers
Local observable errors from truncating interaction tails in gapped quantum lattice systems
Kangle Li
We bound the error in ground-state expectations of local observables caused by truncating the spatial tails of a gapped quantum lattice Hamiltonian. We show that the error is contr…
Topological phases and quantum criticality from Chern-Simons-matter theories
Yunchao Hao, Yingcheng Li, Kangle Li +1
Motivated by recent numerical studies where various Chern-Simons-matter theories emerge, we analytically study topological phases and quantum criticality in two-dimensional…
Stabilizer Perturbation Theory: A Systematic Construction via Schrieffer-Wolff Transformation
Xuzhe Ying, Kangle Li, Hoi Chun Po
Perturbation theories provide valuable insights on quantum many-body systems. Systems of interacting particles, like electrons, are often treated perturbatively around exactly solv…
Symmetry-enforced minimal entanglement and correlation in quantum spin chains
Kangle Li, Liujun Zou
The interplay between symmetry, entanglement and correlation is an interesting and important topic in quantum many-body physics. Within the framework of matrix product states, in t…
Quantum metric driven transition between superfluid and incoherent fluid
Xuzhe Ying, Kangle Li
We study the interplay between repulsive interaction and superfluidity in flat band system. We consider spatially indirect excitons in the Lieb lattice bilayer as an example. We sh…
Constructive Fermionic Matrix Product States for Projected Fermi Sea
Kangle Li, Yan-Bai Zhang, Hoi Chun Po
Projected wave functions offer a means for incorporating local correlation effects in gapless electronic phases of matter like metals. Although such wave functions can be readily s…