5 papers
Generating function and Bloch representation for quantum Fisher tensor
Felipe P. Abreu, Wei Chen
The Uhlmann relative amplitude between two density matrices is shown to be a generating function, through which the quantum Fisher tensor that contains both the quantum Fisher info…
Thermodynamics of an Anyon System
Wei Chen
We examine the thermal behavior of a relativistic anyon system, dynamically realized by coupling a charged massive spin-1 field to a Chern-Simons gauge field. We calculate the free…
Mott Transition in An Anyon Gas
Wei Chen, Matthew P. A. Fisher, Yong-Shi Wu
We introduce and analyze a lattice model of anyons in a periodic potential and an external magnetic field which exhibits a transition from a Mott insulator to a quantum Hall fluid.…
Two-Loop Analysis of Non-abelian Chern-Simons Theory
Wei Chen, Gordon W. Semenoff, Yong-Shi Wu
Perturbative renormalization of a non-Abelian Chern-Simons gauge theory is examined. It is demonstrated by explicit calculation that, in the pure Chern-Simons theory, the beta-func…
Z_N Phases in Hot Gauge Theories
Wei Chen, Mikhail Dobroliubov, Gordon Semenoff
We argue that the \zn phases of hot gauge theories cannot be realized as a real system with an Hermitean density matrix.