6533b83afe1ef96bd12a6ef4

RESEARCH PRODUCT

Non-equilibrium temperature of well-developed quantum turbulence

Maria Stella MongiovìDavid Jou

subject

Physicsfractal dimensionnon equilibrium thermodynamicThermodynamic equilibriumQuantum vortexQuantum turbulenceGeneral Physics and AstronomyNon-equilibrium thermodynamicssuperfluid turbulenceVortexTopological defectSuperfluidityDistribution functionClassical mechanicsQuantum mechanicsSettore MAT/07 - Fisica Matematicavortice

description

Abstract A non-equilibrium effective temperature of quantum vortex tangles is defined as the average energy of closed vortex loops. The resulting thermodynamic expressions for the entropy and the energy in terms of the temperature of the tangle are confirmed by a microscopic analysis based on a potential distribution function for the length of vortex loops. Furthermore, these expressions for the entropy and energy in terms of temperature are analogous to those of black holes: this may be of interest for establishing further connections between topological defects in superfluids and cosmology.

yearjournalcountryeditionlanguage
2009-06-01
10.1016/j.physleta.2009.04.056http://hdl.handle.net/10447/38520