Entanglement in bosonic systems

被引：8
|
作者：
Skrovseth, SO [1 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway
来源：
PHYSICAL REVIEW A | 2005年 / 72卷 / 06期
关键词：
D O I：
10.1103/PhysRevA.72.062305
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We present a technique to resolve a Gaussian density matrix and its time evolution through known expectation values in position and momentum. Further we find the full spectrum of this density matrix and apply the technique to a chain of harmonic oscillators to find agreement with conformal field theory in this domain. We also observe that a nonconformal state has a divergent entanglement entropy.
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页数：6
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