A mesoscopic description of radiative heat transfer at the nanoscale
  We present a formulation of the nanoscale radiative heat transfer (RHT) using concepts of mesoscopic physics. We introduce the analog of the Sharvin conductance using the quantum of thermal conductance. The formalism provides a convenient framework to analyse the physics of RHT at the nanoscale. Finally, we propose a RHT experiment in the regime of quantized conductance. 
Svend-Age Biehs, Emmanuel Rousseau, and Jean-Jacques Greffet
cond-mat.mes-hall quant-ph