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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Magnetic Bloch oscillations in a non-Hermitian quantum Ising chain
(Submitted on 31 Jan 2024 (v1), last revised 28 Mar 2024 (this version, v2))
Abstract: We investigate the impacts of an imaginary transverse field on the dynamics of magnetic domain walls in a quantum Ising chain. We show that an imaginary field plays a similar role as a real transverse field in forming a low-lying Wannier-Stark ladder. However, analytical and numerical calculations of the time evolutions in both systems show that the corresponding Bloch oscillations exhibit totally different patterns for the same initial states. These findings reveal the nontrivial effect of non-Hermiticity on quantum spin dynamics.
Submission history
From: Kunliang Zhang [view email][v1] Wed, 31 Jan 2024 04:15:52 GMT (411kb,D)
[v2] Thu, 28 Mar 2024 14:28:07 GMT (610kb,D)
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