Chaos-assisted many-body tunnelling

被引：2

作者：

Satpathi, Urbashi ^{[1
]}

Ray, Sayak ^{[1
,2
]}

Vardi, Amichay ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Chem, IL-84105 Beer Sheva, Israel

[2] Rhein Friedrich Wilhelms Univ Bonn, Phys Inst, Nussallee 12, D-53115 Bonn, Germany

来源：

PHYSICAL REVIEW E | 2022年 / 106卷 / 04期

关键词：

QUANTUM-SUPERPOSITION STATES; EINSTEIN;

D O I：

10.1103/PhysRevE.106.L042204

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We study the interplay of chaos and tunneling between two weakly coupled Bose-Josephson junctions. The classical phase space of the composite system has a mixed structure including quasi-integrable self-trapping islands for particles and excitations, separated by a chaotic sea. We show that the many-body dynamical tunneling gap between macroscopic Schrodinger cat states supported by these islands is chaos-enhanced. The many-body tunneling rate fluctuates over several orders of magnitude with small variations of the system parameters or the particle number.

引用

页数：6