10 papers
A quantum geometric mechanism for chiral domain wall metastability: Application to twisted transition-metal dichalcogenides
Nisarg Chadha, Qiang Gao, Eslam Khalaf +1
Band topology can have an imprint on the excitations of a ferromagnet. A known example is quantum Hall ferromagnets and their lattice analogs; when both flavors have the same Chern…
Observation of metastable chiral domain walls in a topological magnet
Richen Xiong, Chenxin Qin, Zhaoyu Han +17
The interplay between topology and correlation can give rise to exotic collective excitations. The integer and fractional quantum anomalous Hall (QAH) magnets recently discovered i…
Bootstrap bounds for Quantum Spin Systems using String Operators
Nisarg Chadha, Michael G. Scheer, Eslam Khalaf
Bootstrap is a numerical many-body method that provides rigorous bounds on ground-state observables by imposing a set of necessary constraints on the expectation values of operator…
Controlled expansion for correlated electrons with concentrated kinematics
Pavel A Nosov, Eslam Khalaf, Patrick Ledwith
We introduce a systematic expansion tailored to systems with strong local interactions and capable of computing response functions, including finite DC transport, analytically. The…
Microsopic Theory of Spin Polarons in Chern Ferromagnets
Qiang Gao, Eslam Khalaf
We develop a microscopic theory of charged excitations in an SU(2) Chern ferromagnet and obtain closed-form wavefunctions for a hierarchy of charge- spin polaron states binding…
Bound states of anyons: a geometric quantization approach
Qingchen Li, Pavel A. Nosov, Taige Wang +1
The question of anyon interactions and their possible binding plays a key role in the physics of fractional quantum Hall states. Here, we introduce a controlled and scalable approa…