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- W4301005608 abstract "We study finite size and temperature XX0 Heisenberg spin chain in weak and strong coupling regimes. By using an elegant connection of the model to integrable combinatorics and probability, we explore and interpret a possible phase structure of the model in asymptotic limit: the limit of large inverse temperature and size. First, partition function and free energy of the model are derived by using techniques and results from random matrix models and nonintersecting Brownian motion. We show that, in the asymptotic limit, partition function of the model, written in terms of matrix integral, is governed by the Tracy-Widom distribution. Second, the exact analytic results for the free energy, which is obtained by the asymptotic analysis of the Tracy-Widom distribution, indicate a completely new and sophisticated phase structure of the model. This phase structure consists of second- and third-order phase transitions. Finally, to shed light on our new results, we provide a possible interpretation of the phase structure in terms of dynamical behavior of magnons in the spin chain. We demonstrate distinct features of the phases with schematic spin configurations which have definite features in each region of the phase diagram." @default.
- W4301005608 created "2022-10-04" @default.
- W4301005608 creator A5005698018 @default.
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- W4301005608 date "2016-12-11" @default.
- W4301005608 modified "2023-10-16" @default.
- W4301005608 title "Phase Structure of XX0 Spin Chain and Nonintersecting Brownian Motion" @default.
- W4301005608 doi "https://doi.org/10.48550/arxiv.1612.03463" @default.
- W4301005608 hasPublicationYear "2016" @default.
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