Re: AZ11704
Multipartite nonlocality and boundary conditions in one-dimensional
spin chains
by Zhao-Yu Sun, Mei Wang, Yu-Yin Wu, et al.
Dear Dr. Sun,
The above manuscript has been reviewed by one of our referees.
Comments from the report appear below for your consideration.
When you resubmit your manuscript, please include a summary of the
changes made and a brief response to all recommendations and
criticisms.
Yours sincerely,
Jill Gargano
Senior Assistant Editor
Physical Review A
Email: pra@aps.org
https://journals.aps.org/pra/
Report of the Referee -- AZ11704/Sun
The authors have explored the effect of boundary conditions on
multipartite quantum nonlocality in one-dimensional finite-size spin
chains. It is widely known that boundary conditions have negligible
effect on local properties in the central of the spin chains if the
length of the spin chains is large enough. When the multipartite
nonlocality is under study, it is naturally expected boundary
conditions would play a role even in the large N limit. The authors
have provided consolidated analysis on this. The analysis is generally
sound and the manuscript is well written.
However, I have the following questions for the authors to address
before I can make a recommendation.
Recently, the studies of quantum nonlocality in spin chains have
been related to translational invariance. It has been shown that
breaking translational invariance is a necessary but not sufficient
condition for the existence of nonlocality. Can the boundary effects
on quantum nonlocality be explained according to translational
invariance?The authors in S Campbell et al 2013 New J. Phys. 15 043033 have
investigated global quantum correlations by resorting to quantum
discord in finite-size one-dimensional quantum spin models at finite
temperature and have demonstrated that critical points can be detected
for many-body systems not in ground states. I wonder whether similar
results can be observed in studying the boundary effects on global
quantum nonlocality?
Plan
N12 精确 温度问题。T=0 0.1 1.0
横坐标是，纵坐标是边界效应。不同曲线代表不同的温度。哇咔咔
N12 完全均匀到断开，或反向增强的过程。
横坐标是J从0到很大，纵坐标是边界效应。目的是给出直观的感受。
- 如果J很大，行为消失，则说明，不只是平移不变性的影响。
- 如果J背离1，边界效应都变明显，说明是平移不变性的影响。
哈哈哈哈哈7
