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Wave turbulence in quantum fluids.

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Wave turbulence (WT) in quantum fluids is explored, focusing on energy transfer across scales. Recent experiments and future outlooks for WT in quantum systems are discussed.

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Area of Science:

  • Fluid dynamics
  • Quantum mechanics
  • Condensed matter physics

Background:

  • Wave turbulence (WT) describes energy transfer in nonlinear wave systems.
  • WT in quantum fluids is crucial for understanding quantum turbulence decay.
  • Laboratory experiments offer insights into WT phenomena.

Purpose of the Study:

  • To review recent advancements in wave turbulence research within quantum fluids.
  • To provide context and discuss the future outlook of WT in quantum systems.
  • To outline theoretical frameworks and experimental findings.

Main Methods:

  • Theoretical analysis of nonlinear wave interactions.
  • Experimental studies using liquid hydrogen (H2) and liquid helium (He).
  • Discussion of predicted WT in excitonic superfluids.

Main Results:

  • Energy cascades through nondissipative inertial ranges in WT systems.
  • Viscosity terminates energy cascades at small scales, dissipating energy as heat.
  • Experimental evidence of WT in liquid H2 and He supports theoretical models.

Conclusions:

  • Wave turbulence in quantum fluids is a significant area of research with ongoing experimental and theoretical developments.
  • Future research will focus on observing WT in novel systems like excitonic superfluids.
  • Understanding WT is key to unraveling the dynamics of quantum turbulence.