Predicting Spinor Condensate Dynamics from Simple Principles

Journal Article · Fri Jul 13 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.020404· OSTI ID:20957864

Moreno-Cardoner, M; Guilleumas, M; Polls, A ^[1]; Mur-Petit, J ^[2]; Sanpera, A ^[3]; Lewenstein, M ^[4]

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1. Departament d'Estructura i Constituents de la Materia, Facultat de Fisica, Universitat de Barcelona, E-08028 Barcelona (Spain)
2. IFRAF and Laboratoire Aime Cotton, CNRS and Universite Paris-Sud, F-91405 Orsay (France)
3. ICREA and Grup de Fisica Teorica, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain)
4. ICREA and ICFO-Institut de Ciencies Fotoniques, E-08034 Barcelona (Spain)

We study the spin dynamics of quasi-one-dimensional F=1 condensates both at zero and finite temperatures for arbitrary initial spin configurations. The rich dynamical evolution exhibited by these nonlinear systems is explained by surprisingly simple principles: minimization of energy at zero temperature and maximization of entropy at high temperature. Our analytical results for the homogeneous case are corroborated by numerical simulations for confined condensates in a wide variety of initial conditions. These predictions compare qualitatively well with recent experimental observations and can, therefore, serve as a guidance for ongoing experiments.

• OSTI ID: 20957864
• Journal Information: Physical Review Letters, Vol. 99, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.99.020404; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CONDENSATES
ENTROPY
EVOLUTION
MINIMIZATION
NONLINEAR PROBLEMS
ONE-DIMENSIONAL CALCULATIONS
SIMULATION
SPIN