Time dependence of quantum entanglement in the collision of two particles

被引：13

作者：

Benedict, Mihaly G. ^{[1
]}

Kovacs, Judit ^{[1
]}

Czirjak, Attila ^{[1
]}

机构：

[1] Univ Szeged, Dept Theoret Phys, H-6720 Szeged, Hungary

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2012年 / 45卷 / 08期

基金：

匈牙利科学研究基金会;

关键词：

VARIABLES;

D O I：

10.1088/1751-8113/45/8/085304

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We follow the emergence of quantum entanglement in a scattering event between two initially uncorrelated distinguishable quantum particles interacting via a delta potential. We calculate the time dependence of the Neumann entropy of the one-particle reduced density matrix. Using the exact propagator for the delta potential, we derive an approximate analytic formula for the asymptotic form of the two-particle wavefunction which is sufficiently accurate to account for the entanglement features of the system.

引用

页数：8

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