Volume 90, Number 2, April 2010
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||14 May 2010|
Thermal conductivity and viscosity of a Bose gas above superfluid transition
T.C.M. Group, Cavendish Laboratory - J.J. Thomson Avenue, Cambridge, CB3 0HE, UK, EU
Corresponding author: email@example.com
Accepted: 12 April 2010
The thermal fluctuations of the order parameter affect the transport of Bose gas above the superfluid transition. Using the time-dependent Ginzburg-Landau theory in the classical region, we calculate the fluctuation corrections to the coefficients of thermal conductivity and shear viscosity. Above the transition temperature Tc, the fluctuation contribution to the thermal conductivity diverges as for dimensions d. The viscosity drops near Tc since the fluctuation contributes a correction which varies as . The calculations are conducted under the condition that the fluctuation corrections are small compared with the normal part of the transport coefficients.
PACS: 67.10.Jn – Transport properties and hydrodynamics / 74.40.Kb – Quantum critical phenomena / 74.40.-n – Fluctuation phenomena
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.