6 papers
On the Thermal Transport Puzzles in -RuCl
Zheng-Duo Fan, Xiao-Qi Sun, Jing-Yuan Chen
Thermal transport has been used to probe the nature of -RuCl, an important candidate of Kitaev material. Two remarkable observations were made under applied magnetic fields…
Framing Anomaly in Lattice Chern-Simons-Maxwell Theory
Ze-An Xu, Jing-Yuan Chen
Framing anomaly is a key property of chiral topological orders, for it reveals that the chirality is an intrinsic bulk property of the system, rather than a property of th…
Instanton Density Operator in Lattice QCD from Higher Category Theory
Jing-Yuan Chen
A natural definition for instanton density operator in lattice QCD has long been desired. We show this problem is, and has to be, solved by higher category theory. The problem is s…
Lattice Chern-Simons-Maxwell Theory and its Chirality
Ze-An Xu, Jing-Yuan Chen
We define and solve the Chern-Simons-Maxwell theory on spacetime lattice, with an emphasis on the chirality of the theory. Realizing Chern-Simons theory on lattice ha…
An Explicit Categorical Construction of Instanton Density in Lattice Yang-Mills Theory
Peng Zhang, Jing-Yuan Chen
Since the inception of lattice QCD, a natural definition for the Yang-Mills instanton on lattice has been long sought for. In a recent work, one of authors showed the natural solut…
A Discrete Formulation of Second Stiefel-Whitney Class for Band Theory
Ken Shiozaki, Jing-Yuan Chen
Topological invariants in band theory are often formulated assuming that Bloch wave functions are smoothly defined over the Brillouin zone (BZ). However, first-principles band calc…