2012/12/13 by Liliana Arrachea, Bruno Rizzo
Materials Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Energy flow #Energy transport #Formalism (music) #Heat current #Heat flow #Mechanical and Optical Resonators #Non-equilibrium thermodynamics #Potential energy #Quantum #Thermal properties of materials #Transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1088/1742-6596/427/1/012012
published as Journal of Physics: Conference Series,Progress in Nonequilibrium Green's Functions V (2012) · 14 pages, 2 figures
arxiv created 2012/12/13 · openalex publication_date 2013/03/27 · arxiv updated 2015/06/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We review a recent theoretical development based on non-equilibrium Green's function formalism to study heat transport in nanomechanical devices modeled by phononic systems of coupled quantum oscillators driven by ac forces and connected to phononic reservoirs. We present the relevant equations to calculate the heat currents flowing along different regions of the setup, as well as the power developed by the time-dependent forces. We also present different strategies to evaluate the Green's functions exactly or approximately within the weak driving regime. We finally discuss the different mechanisms in which the ac driving forces deliver the energy. We show that, besides generating heat, the forces may operate exchanging energy as a quantum engine.