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Entanglement negativity and replica symmetry breaking in general holographic states

Journal Article · · Journal of High Energy Physics
The entanglement negativity $$\mathcal{E}$$(A : B) is a useful measure of quantum entanglement in bipartite mixed states. In random tensor networks (RTNs), which are related to fixed-area states, it was found in ref. [1] that the dominant saddles computing the even Rényi negativity $$\mathcal{E}$$(2k) generically break the ℤ2k replica symmetry. This calls into question previous calculations of holographic negativity using 2D CFT techniques that assumed ℤ2k replica symmetry and proposed that the negativity was related to the entanglement wedge cross section. In this paper, we resolve this issue by showing that in general holographic states, the saddles computing $$\mathcal{E}$$(2k) indeed break the ℤ2k replica symmetry.
Research Organization:
University of California, Berkeley, CA (United States)
Sponsoring Organization:
Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-05CH11231; SC0011702; SC0019380
OSTI ID:
2999778
Alternate ID(s):
OSTI ID: 2999762
Journal Information:
Journal of High Energy Physics, Journal Name: Journal of High Energy Physics Journal Issue: 1 Vol. 2025; ISSN 1029-8479
Publisher:
Springer Science and Business Media LLCCopyright Statement
Country of Publication:
United States
Language:
English

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