تقرير
Quantum transport of strongly interacting fermions in one dimension at far-out-of-equilibrium
| العنوان: | Quantum transport of strongly interacting fermions in one dimension at far-out-of-equilibrium |
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| المؤلفون: | Zou, Jie, Li, Xiaopeng |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter Quantum Physics |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases, Quantum Physics |
| الوصف: | In the study of quantum transport, much has been known for dynamics near thermal equilibrium. However, quantum transport far away from equilibrium is much less well understood--the linear response approximation does not hold for physics far-out-of-equilibrium in general. In this work, motivated by recent cold atom experiments on probing quantum many-body dynamics of a one-dimensional XXZ spin chain, we study the strong interaction limit of the one-dimensional spinless fermion model, which is dual to the XXZ spin chain. We develop a highly efficient computation algorithm for simulating the non-equilibrium dynamics of this system exactly, and examine the non-equilibrium dynamics starting from a density modulation quantum state. We find ballistic transport in this strongly correlated setting, and show a plane-wave description emerges at long-time evolution. We also observe sharp distinction between transport velocities in short and long times as induced by interaction effects, and provide a quantitative interpretation for the long-time transport velocity. |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.106.053321 |
| الوصول الحر: | http://arxiv.org/abs/2206.13023Test |
| رقم الانضمام: | edsarx.2206.13023 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.106.053321 |
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