Nonlinear density collapse in one-dimensional cold atomic gas

被引：0

作者：

Jana, Sayanee ^{[1
]}

Ghosh, Samiran ^{[2
]}

Chakrabarti, Nikhil ^{[3
]}

Khan, Manoranjan ^{[1
]}

机构：

[1] Jadavpur Univ, Dept Instrumentat Sci, Kolkata 700032, India

[2] Univ Calcutta, Dept Appl Math, 92 Acharya Prafulla Chandra Rd, Kolkata 700009, India

[3] Saha Inst Nucl Phys, 1-AF Bidhannagar, Kolkata 700064, India

来源：

PHYSICA SCRIPTA | 2019年 / 94卷 / 05期

关键词：

cold atomic gas; nonlinear density collapse; nonlinear structures; BEHAVIOR;

D O I：

10.1088/1402-4896/ab0b2e

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The nonlinear collective dynamics of a one-dimensional cold atomic cloud is investigated using a Lagrangian fluid description. An exact non-stationary nonlinear solution with a nontrivial space and time dependence is obtained. The results demonstrate the formation of nonlinear localized soliton-like density structures when nonlinearity is being balanced by the wave dispersion. Moreover, the solution predicts the catastrophic density collapse in the cloud of cold atomic gas when nonlinearity overpowers the dispersion.

引用

页数：5

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