Superfluid Density of an Open Dissipative Condensate

2011/06/03 by Jonathan Keeling · 51 citations
Engineering · Physics and Astronomy · #Condensed matter physics #Critical ionization velocity #Dissipation #Dissipative system #Physics #Polariton #Quantum Electrodynamics and Casimir Effect #Quantum mechanics #Quantum vortex #Roton #Strong Light-Matter Interactions #Superfluid film #Superfluid helium-4 #Superfluidity #Thermal Radiation and Cooling Technologies #cond-mat.quant-gas

paper · pdf · doi:10.1103/physrevlett.107.080402

published in Physical Review Letters 107(8), 080402 (American Physical Society) · 4 pages, 3 figures

arxiv created 2011/06/03 · openalex publication_date 2011/08/16 · arxiv updated 2011/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

I calculate the superfluid density of a nonequilibrium steady state condensate of particles with finite lifetime. Despite the absence of a simple Landau critical velocity, a superfluid response survives, but dissipation reduces the superfluid fraction. I also suggest an idea for how the superfluid density of an example of such a system, i.e., microcavity polaritons, might be measured.

Citations

• Superfluidity of polaritons in semiconductor microcavities
• Phonons in a magnon superfluid and symmetry-breaking field
• Measuring the Superfluid Fraction of an Ultracold Atomic Gas
• Nonequilibrium Quantum Condensation in an Incoherently Pumped Dissipative System
• Bose–Einstein condensation of photons in an optical microcavity

Cited by

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