Browsing by Author "Hetényi, Balázs"
Now showing items 1-3 of 3
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Calculating the polarization in bipartite lattice models: application to an extended Su-Schrieffer-Heeger model
(American Physical Society, 2021-02-08)We address the question of different representations of Bloch states for lattices with a basis, with a focus on topological systems. The representations differ in the relative phase of the Wannier functions corresponding ... -
Geometric cumulants associated with adiabatic cycles crossing degeneracy points: Application to finite size scaling of metal-insulator transitions in crystalline electronic systems
(American Physical Society, 2022-11-28)In this work, we focus on two questions. One, we complement the machinery to calculate geometric phases along adiabatic cycles as follows. The geometric phase is a line integral along an adiabatic cycle and if the cycle ... -
Scaling and renormalization in the modern theory of polarization: application to disordered systems
(American Physical Society, 2021-12-15)We develop a scaling theory and a renormalization technique in the context of the modern theory of polarization. The central idea is to use the characteristic function (also known as the polarization amplitude) in place ...
