6 papers
Dual Haldane sphere and quantized band geometry in chiral multifold fermions
Yu-Ping Lin, Wei-Han Hsiao
We show that the chiral multifold fermions present a dual Haldane sphere problem in momentum space. Owing to the Berry monopole at the degenerate point, a dual Landau level emerges…
Time-reversal odd transport in bilayer graphene: Hall conductivity and Hall viscosity
Wei-Han Hsiao
We consider the time-reversal odd dynamics of the bilayer graphene at low energies in the quantum Hall regime. A generating functional for the effective action that captures the el…
Landau quantization of multilayer graphene on a Haldane sphere
Wei-Han Hsiao
We consider the problem of multilayer graphene on a Haldane sphere and determine the Landau level spectrum for this family of systems. This serves as a generalization of the Landau…
Self-Dual Bosonic Quantum Hall State in Mixed Dimensional QED
Wei-Han Hsiao, Dam Thanh Son
We consider a (2+1) dimensional Wilson-Fisher boson coupled to a (3+1) dimensional U(1) gauge field. This theory possesses a strong-weak duality in terms of the coupling constant e…
Universal collective modes in 2 dimensional chiral superfluids
Wei-Han Hsiao
In this work, we utilize semi-classical kinetic equations to investigate the order parameter collective modes of a class of 2 dimensional superfluids. Extending the known results f…
Quantum Phase Transitions in Proximitized Josephson Junctions
Chien-Te Wu, F. Setiawan, Brandon M. Anderson +2
We study fermion-parity-changing quantum phase transitions (QPTs) in platform Josephson junctions. These QPTs, associated with zero-energy bound states, are rather widely observed…