Hidden time-reversal in driven XXZ spin chains: exact solutions and new dissipative phase transitions
| Autor: | Yao, Mingxing, Lingenfelter, Andrew, Belyansky, Ron, Roberts, David, Clerk, Aashish A. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We show that several models of interacting XXZ spin chains subject to boundary driving and dissipation possess a subtle kind of time-reversal symmetry, making their steady states exactly solvable. We focus on a model with a coherent boundary drive, showing that it exhibits a unique continuous dissipative phase transition as a function of the boundary drive amplitude. This transition has no analogue in the bulk closed system, or in incoherently driven models. We also show the steady state magnetization exhibits a surprising fractal dependence on interaction strength, something previously associated with less easily measured infinite-temperature transport quantities (the Drude weight). Our exact solution also directly yields driven-dissipative double-chain models that have pure, entangled steady states that are also current carrying. Comment: 6 pages, 4 figures + 16 pages, 7 figures |
| Databáze: | arXiv |
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