TY - JOUR

T1 - Non-equilibrium temperature of well-developed quantum turbulence

AU - Mongiovi', Maria Stella

AU - Jou, null

PY - 2009

Y1 - 2009

N2 - 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 confirmedby a microscopic analysis based on a potential distribution function for the length of vortex loops. Furthermore, theseexpressions for the entropy and energy in terms of temperature are analogous to those of black holes: this may be of interest forestablishing further connections between topological defects in superfluids and cosmology.

AB - 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 confirmedby a microscopic analysis based on a potential distribution function for the length of vortex loops. Furthermore, theseexpressions for the entropy and energy in terms of temperature are analogous to those of black holes: this may be of interest forestablishing further connections between topological defects in superfluids and cosmology.

KW - fractal dimension

KW - non equilibrium thermodynamics

KW - superfluid turbulence

KW - vortices

KW - fractal dimension

KW - non equilibrium thermodynamics

KW - superfluid turbulence

KW - vortices

UR - http://hdl.handle.net/10447/38520

M3 - Article

VL - 373

SP - 2306

EP - 2310

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

SN - 0375-9601

ER -