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It is understood very well that at 20Gbps and beyond, P/N skew from fiber weave effect in printed circuit board (PCB) has to be taken into account. Several studies have been done to measure and quantify the effect of glass weave but very few have offered techniques to budget for P/N skew. System companies need an effective way to capture glass weave skew and budget for it in channel designs. Using...
We study a two-band model of fermions in a 1d chain with an antisymmetric hybridization that breaks inversion symmetry. We find that for certain values of its parameters, the sp-chain maps formally into a p-wave superconducting chain, the archetypical 1d system exhibiting Majorana fermions. The eigenspectra, including the existence of zero energy modes in the topological phase, agree for both models...
We develop an efficient numerical method to study the quantum critical behavior of disordered systems with order‐parameter symmetry in the large‐N limit. It is based on the iterative solution of the large‐N saddle‐point equations combined with a fast algorithm for inverting the arising large sparse random matrices. As an example, we consider the superconductor‐metal quantum phase transition in...
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