Dynamical phase diagram of Su-Schrieffer-Heeger model

Naji, Jalil; Jafari, Rohollah

doi:10.47176/ijpr.22.2.11394

Dynamical phase diagram of Su-Schrieffer-Heeger model

Document Type : Original Article

Authors

Jalil Naji ¹

Rohollah Jafari ²

¹ Department of Physics, Faculty of Science, Ilam University, Ilam, Iran

² Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran and School of Physics, Institute for Studies in Theoretical Physics and Mathematics (IPM), P.O. Box 19395-5531, Tehran, Iran

https://doi.org/10.47176/ijpr.22.2.11394

Abstract

In this paper, we have studied the dynamical phase diagram of the Su-Schrieffer-Heeger model using the notion of dynamical quantum phase transition in the ramped quench case. We have shown that, when the quench crosses both the critical points of the model, the phase diagram of the model includes two regions with dynamical quantum phase transition and no dynamical quantum phase transition. We have shown that if the sweep velocity is smaller than the critical value, the system shows dynamical quantum phase transition. If the quench crosses the single critical point, the system always shows the dynamical quantum phase transition

Keywords

dynamical quantum phase transition

Su-Schrieffer-Heeger model

20.1001.1.16826957.1401.22.2.19.1

Subjects

Condensed Matter Physics

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