Transport in high D-dimensional topological insulators models

We study the longitudinal conductivity $\sigma^{reg}_{xx}(\omega)$ in the neighboring of the phase transition of the topological charge in topological insulators models in (4+1)-D dimensions [1-4] employing the Kubo formalism of the linear response theory [5-6]. Thus we analyze the effect of topological phase transition of the sudden variation of the second Chern number $Q_2$ in higher dimensions on AC conductivity. In addition, we investigate the effect of the sudden variation of the second Chern number in von Neumann entropy [7-8].

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