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Updated: Jun 25, 2026

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

Published on: March 30, 2017

Impurity crystal in a bose-einstein condensate.

David C Roberts¹, Sergio Rica

¹Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.

Physical Review Letters

|March 5, 2009

Summary

This summary is machine-generated.

Impurity fields in condensates can form spontaneous crystals. This novel supersolid behavior exhibits nonclassical rotational inertia, characteristic of superfluidity.

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Published on: June 7, 2018

Area of Science:

Condensed Matter Physics
Quantum Fluids

Background:

Understanding impurity behavior in quantum condensates is crucial.
Surface energy effects and inter-impurity interactions are key factors.

Purpose of the Study:

Investigate impurity field localization and interactions within a condensate.
Determine conditions for spontaneous crystal formation.
Analyze the resulting system for superfluid and supersolid properties.

Main Methods:

Theoretical analysis of impurity fields in a condensate.
Derivation of condensate-mediated interaction potentials.
Examination of system behavior in various dimensions and parameter regimes.

Main Results:

Derived the functional form of attractive condensate-mediated interactions.
Demonstrated spontaneous crystal formation of N impurities under specific conditions.
Observed nonclassical rotational inertia in the condensate-crystal system.

Conclusions:

Impurity fields can self-organize into crystalline structures within condensates.
The emergent supersolid behavior is confirmed by nonclassical rotational inertia.
This work provides insights into novel quantum states of matter.