Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Phase fluctuations in atomic Bose gases.

J O Andersen1, U Al Khawaja, H T C Stoof

  • 1Institute for Theoretical Physics, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands.

Physical Review Letters
|February 28, 2002
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Phase-controlled elastic, inelastic, and coalescent collisions of two-dimensional flat-top solitons.

Physical review. E·2026
Same author

Elastic and inelastic scattering of flat-top solitons.

Physical review. E·2024
Same author

Momentum-dependent scaling exponents of nodal self-energies measured in strange metal cuprates and modelled using semi-holography.

Nature communications·2024
Same author

Reflectionless potentials and resonant scattering of flat-top and thin-top solitons.

Physical review. E·2023
Same author

Bound-states spectrum of the nonlinear Schrödinger equation with Pöschl-Teller and square-potential wells.

Physical review. E·2022
Same author

Quantum reflection of dark solitons scattered by reflectionless potential barrier and position-dependent dispersion.

Physical review. E·2022

We present an improved theory for Bose-Einstein condensed atomic gases, accurately describing phase fluctuations. This new model works in any dimension and explains the low-temperature crossover in various Bose gas systems.

Area of Science:

  • Atomic physics
  • Quantum gases
  • Condensed matter physics

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter formed by cooling atoms to near absolute zero.
  • The Popov theory is a theoretical framework used to describe weakly interacting Bose gases.
  • Understanding BECs in different dimensions is crucial for experimental exploration and fundamental physics.

Purpose of the Study:

  • To refine the Popov theory for partially Bose-Einstein condensed atomic gases.
  • To develop a theory valid in arbitrary dimensions.
  • To describe the low-temperature dimensional crossover in Bose gases.

Main Methods:

  • Exact treatment of phase fluctuations in the theoretical model.
  • Application to both homogeneous and trapped Bose gas systems.

Related Experiment Videos

  • Analysis of the crossover phenomena in 1D, 2D, and 3D Bose gases.

    • Main Results:

    • The improved theory is valid in arbitrary dimensions.
    • The theory successfully describes the low-temperature crossover between different dimensional Bose gases.
    • The model accounts for phase fluctuations, enhancing its accuracy.

    Conclusions:

    • The enhanced Popov theory provides a more robust framework for studying Bose-Einstein condensates.
    • This work facilitates the theoretical understanding of ongoing experimental investigations into dimensional crossovers.
    • The theory is applicable to a wide range of Bose gas systems, including trapped configurations.