تقرير
Reflected entropy and computable cross-norm negativity: Free theories and symmetry resolution
| العنوان: | Reflected entropy and computable cross-norm negativity: Free theories and symmetry resolution |
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| المؤلفون: | Berthiere, Clément, Parez, Gilles |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter High Energy Physics - Theory Quantum Physics |
| مصطلحات موضوعية: | High Energy Physics - Theory, Condensed Matter - Statistical Mechanics, Condensed Matter - Strongly Correlated Electrons, Quantum Physics |
| الوصف: | We investigate a separability criterion based on the computable cross-norm (CCNR), and a related quantity called the CCNR negativity. We introduce a reflected version of the CCNR negativity, and discuss its connection with other well-established entanglement-related quantities, namely the reflected entropy and the operator entanglement entropy. For free fermionic and bosonic theories, we derive exact formulas in terms of two-point correlation functions, which allow for systematic numerical investigations and, in principle, analytical treatments. For systems with a global $U(1)$ symmetry, we study the symmetry-resolved reflected entropy and CCNR negativity. We provide conformal field theory (CFT) results for the charged moments in the case of adjacent intervals, finding perfect agreement with the numerics. We observe an equipartition of reflected entropies and CCNR negativities, both for free-fermions and free-boson models. The first charge-dependent corrections are conjectured for fermions, and worked out from the CFT calculations for bosons. Comment: 9+2 pages, 3 figures; v2: minor corrections, matches published version |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2307.11009 |
| رقم الأكسشن: | edsarx.2307.11009 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |