4 papers
Non-abelian bosonization in two and three spatial dimensions and applications
Yen-Ta Huang, Dung-Hai Lee
In this paper, we generalize Witten's non-abelian bosonization in -D to two and three spatial dimensions. Our theory applies to fermions with relativistic dispersion. The bo…
The "non-regularizability" of gapless free fermion Hamiltonian protected by on-site symmetries
Yen-Ta Huang, Lokman Tsui, Dung-Hai Lee
The non-regularizability of free fermion field theories, which is the root of various quantum anomalies, plays a central role in particle physics and modern condensed matter physic…
A Holographic Theory for the Phase Transitions Between Fermionic Symmetry-protected Topological States
Lokman Tsui, Yen-Ta Huang, Dung-Hai Lee
In an earlier work we developed a holographic theory for the phase transition between bosonic symmetry-protected topological (SPT) states. This paper is a continuation of it. Here…
Does the existence of Majorana zero mode in superconducting vortices imply the superconductivity is topologically non-trivial?
Lokman Tsui, Zi-Xiang Li, Yen-Ta Huang +2
We show that the presence of Majorana zero modes (2D), and chiral-dispersing Majorana modes (3D), in the vortex cores of superconductors are neither sufficient nor necessary condit…