تقرير
Spatial entanglement in interacting Bose-Einstein condensates
| العنوان: | Spatial entanglement in interacting Bose-Einstein condensates |
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| المؤلفون: | Sánchez-Kuntz, N., Floerchinger, S. |
| المصدر: | Phys. Rev. A 103, 043327 (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter High Energy Physics - Theory |
| مصطلحات موضوعية: | Condensed Matter - Quantum Gases, High Energy Physics - Theory, 81Qxx, 81Txx, 81Vxx |
| الوصف: | The entanglement between spatial regions in an interacting Bose-Einstein condensate is investigated using a quantum field theoretic formalism. Regions that are small compared to the healing length are governed by a non-relativistic quantum field theory in the vacuum limit, and we show that the latter has vanishing entanglement. In the opposite limit of a region that is large compared to the healing length, the entanglement entropy is like in the vacuum of a relativistic theory where the velocity of light is replaced with the velocity of sound and where the inverse healing length provides a natural ultraviolet regularization scale. Besides the von Neumann entanglement entropy, we also calculate R\'enyi entanglement entropies for a one-dimensional quasi-condensate. Comment: 28 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.103.043327 |
| URL الوصول: | http://arxiv.org/abs/2011.11076 |
| رقم الأكسشن: | edsarx.2011.11076 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.103.043327 |
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