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arXiv · 1905.12381

One-dimensional quantum many body systems with long-range interactions

Somnath Maity·Utso Bhattacharya·Amit Dutta
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Abstract

The presence of algebraically decaying long-range interactions may alter the critical as well as topological behaviour of a quantum many-body systems. However, when the interaction decays at a faster rate, the short-range behaviour is expected to be retrieved. Similarly, the long-range nature of interactions has a prominent signature on the out of equilibrium dynamics of these systems, e.g, in the growth of the entanglement entropy following a quench, the propagation of mutual information and non-equilibrium phase transitions. In this review, we summarize the results of long-range interacting classical and quantum Ising chains which have been studied since decades. Thereafter, we focus on the recent developments on the integrable long-range Kitaev chain emphasising the role of long-range superconducting pairing term on determining its topological phase diagram and out of equilibrium dynamics.

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Somnath Maity, Utso Bhattacharya, Amit Dutta. 2019-05-29. One-dimensional quantum many body systems with long-range interactions. https://doi.org/10.1088/1751-8121%2Fab5634

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