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

Pairing fluctuations in trapped fermi gases.

Luciano Viverit1, Georg M Bruun, Anna Minguzzi

  • 1Dipartimento di Fisica, Università di Milano, Via Celoria 16, 20133, Milan, Italy.

Physical Review Letters
|September 28, 2004
PubMed
Summary

We studied pairing fluctuations in ultracold atomic Fermi gases. A parity effect was predicted, where fluctuations peak or dip at the trap center based on the last occupied shell, offering a new detection method.

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

Entanglement Transition in Unitary System-Bath Dynamics.

Physical review letters·2026
Same author

Quantum Time Crystal Clock and Its Performance.

Physical review letters·2026
Same author

Disentangling Magic States with Classically Simulable Quantum Circuits.

Physical review letters·2026
Same author

Monitored long-range interacting systems: spin-wave theory for quantum trajectories.

Nature communications·2025
Same author

Biss et al. Reply.

Physical review letters·2024
Same author

Scaling regimes of the one-dimensional phase turbulence in the deterministic complex Ginzburg-Landau equation.

Physical review. E·2024

Area of Science:

  • Quantum physics
  • Atomic physics
  • Condensed matter physics

Background:

  • Superfluidity in atomic Fermi gases is crucial for understanding quantum many-body systems.
  • Pairing fluctuations significantly influence the superfluid order parameter, especially in small systems.
  • The Bardeen-Cooper-Schrieffer (BCS) regime describes conventional superconductivity and superfluidity.

Purpose of the Study:

  • To investigate the role of pairing fluctuations in the superfluid order parameter of harmonically trapped atomic Fermi gases.
  • To analyze the spatial and temperature dependence of these fluctuations in small systems.
  • To predict and propose methods for detecting a novel parity effect related to pairing fluctuations.

Main Methods:

  • Analytical calculations were performed for small systems.

Related Experiment Videos

  • Numerical simulations were employed to study the system's behavior.
  • The density-density correlation function after ballistic expansion was proposed as a detection method.

    • Main Results:

    • Pairing fluctuations were found to depend on space and temperature.
    • A parity effect was predicted: pairing fluctuations exhibit a maximum or minimum at the trap center.
    • This effect is contingent on whether the last occupied shell is even or odd.

    Conclusions:

    • Pairing fluctuations play a significant role in the superfluid order parameter of trapped Fermi gases.
    • The predicted parity effect offers a unique signature of these fluctuations.
    • Measuring density-density correlations after ballistic expansion is a viable experimental strategy for detecting pairing fluctuations.