Bhattacharya, Utso ; Dutta, Amit (2018) Topological footprints of the Kitaev chain with long-range superconducting pairings at a finite temperature Physical Review B, 97 (21). ISSN 2469-9950
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Official URL: http://doi.org/10.1103/PhysRevB.97.214505
Related URL: http://dx.doi.org/10.1103/PhysRevB.97.214505
Abstract
We study the 1D Kitaev chain with long range superconductive pairing terms at a finite temperature where the system is prepared in a mixed state in equilibrium with a heat reservoir maintained at a constant temperature $T$. In order to probe the footprint of the ground state topological behavior of the model at finite temperature, we look at two global quantities extracted out of two geometrical constructions: the Uhlmann and the interferometric phase. Interestingly, when the long-range effect dominates, the Uhlmann phase approach fails to reproduce the topological aspects of the model in the pure state limit; on the other hand, the interferometric phase, though has a proper pure state reduction, shows a behaviour independent of the ambient temperature.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Physical Society. |
ID Code: | 117163 |
Deposited On: | 16 Apr 2021 04:33 |
Last Modified: | 16 Apr 2021 04:33 |
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