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Published on: December 4, 2017
Dynamical theory of superfluidity in one dimension.
Thomas Eggel1, Miguel A Cazalilla, Masaki Oshikawa
1Institute for Solid State Physics, University of Tokyo, Kashiwa, Japan.
Physical Review Letters
|January 17, 2012
Summary
A new theory explains superfluidity in one-dimensional quantum fluids by detailing how quantum phase slips are suppressed at low temperatures. This research impacts understanding of helium, solid helium, and ultracold atomic gases.
Area of Science:
- Condensed Matter Physics
- Quantum Fluids
- Low-Temperature Physics
Background:
- Superfluidity in one-dimensional (1D) systems is crucial for understanding quantum phenomena.
- Quantum phase slips are known to affect the onset of superfluidity in 1D systems.
- Dynamical aspects of superfluid response require theoretical frameworks.
Purpose of the Study:
- To develop a theory for the dynamical superfluid response of 1D quantum fluids.
- To investigate the role of dynamical suppression of quantum phase slips.
- To explore applications in various 1D quantum fluid systems.
Main Methods:
- Theoretical modeling of 1D quantum fluid dynamics.
- Analysis of quantum phase slip suppression.
- Calculation of the momentum response function.
- Examination of frequency and temperature dependencies.
Main Results:
- A theory is presented that accounts for the dynamical superfluid response in 1D quantum fluids.
- The onset of superfluidity is linked to the dynamical suppression of quantum phase slips at low temperatures.
- The frequency and temperature dependence of this suppression is characterized.
Conclusions:
- The developed theory provides a framework for understanding superfluidity in 1D systems.
- The findings are applicable to helium in nanoporous materials, dislocations in solid 4He, and ultracold atomic gases.
- This work advances the comprehension of quantum fluid behavior in reduced dimensions.
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