53 citations · 83 across the 5 of their papers we have counts for
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cond-mat.other2011★ 53 cited
Unified Formalism for calculating Polarization, Magnetization, and more in a Periodic Insulator
Kuang-Ting Chen, Patrick A. Lee
In this paper, we propose a unified formalism, using Green's functions, to integrate out the electrons in an insulator under uniform electromagnetic fields. We derive a perturbativ…
cond-mat.other2011
Static Electric Field in a 1D Systems without Boundaries
Kuang-Ting Chen, Patrick A. Lee
In this brief report, we show that in a 1D system with unit-cell doubling, the coefficient of the -term is not only determined the topological index, $\int i\bra{u_k}\frac{\d}{\…
cond-mat.other2010★ 29 cited
Topological Insulator and the -vacuum in a system without boundaries
Kuang-Ting Chen, Patrick A. Lee
In this paper we address two questions concerning the effective action of a topological insulator in one and three dimensional space without boundaries, such as a torus. The first…