Transport Process in Multi-Junctions of Quantum Systems
Taro Kimura, Masaki Murata
TL;DR
This paper investigates how conserved currents are transmitted and reflected at multi-junctions in quantum systems, using boundary conformal field theory to derive formulas that reveal spin-flip transport phenomena.
Contribution
It introduces a method to compute reflection and transmission coefficients at multi-junctions in quantum systems, highlighting spin-flip transport effects.
Findings
Derived closed-form formulas for reflection/transmission coefficients.
Demonstrated spin-flip transport at junctions.
Provided examples illustrating the transport behavior.
Abstract
We consider the junction of multiple one-dimensional systems and study how conserved currents transport at the junction. To characterize the transport process, we introduce reflection/transmission coefficients by applying boundary conformal field theory. We compute the reflection/transmission coefficients for some examples to derive the closed formulas. The formulas demonstrate spin-flip transport, where the spin polarization is flipped at the junction.
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