Quantum Kibble-Zurek Mechanism in a Spin-1 Bose-Einstein Condensate

被引：136

作者：

Anquez, M. ^{[1
]}

Robbins, B. A. ^{[1
]}

Bharath, H. M. ^{[1
]}

Boguslawski, M. ^{[1
]}

Hoang, T. M. ^{[1
]}

Chapman, M. S. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 15期

基金：

美国国家科学基金会;

关键词：

SPONTANEOUS SYMMETRY-BREAKING; PHASE-TRANSITION; DEFECT FORMATION; STRING FORMATION; COSMOLOGICAL EXPERIMENTS; TOPOLOGICAL DEFECTS; VORTEX FORMATION; SUPERFLUID HE-3; LIQUID-CRYSTALS; COSMIC STRINGS;

D O I：

10.1103/PhysRevLett.116.155301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamics of a quantum phase transition are explored using slow quenches from the polar to the broken-axisymmetry phases in a small spin-1 ferromagnetic Bose-Einstein condensate. Measurements of the evolution of the spin populations reveal a power-law scaling of the temporal onset of excitations versus quench speed as predicted from quantum extensions of the Kibble-Zurek mechanism. The satisfactory agreement of the measured scaling exponent with the analytical theory and numerical simulations provides experimental confirmation of the quantum Kibble-Zurek model.

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页数：6

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