Heat transport in low-dimensional systems

A Dhar - Advances in Physics, 2008 - Taylor & Francis
Recent results on theoretical studies of heat conduction in low-dimensional systems are
presented. These studies are on simple, yet non-trivial, models. Most of these are classical …

Anomalous heat transport in one dimensional systems: a description using non-local fractional-type diffusion equation

A Dhar, A Kundu, A Kundu - Frontiers in Physics, 2019 - frontiersin.org
It has been observed in many numerical simulations, experiments and from various
theoretical treatments that heat transport in one-dimensional systems of interacting particles …

Frequency-dependent phonon mean free path in carbon nanotubes from nonequilibrium molecular dynamics

K Sääskilahti, J Oksanen, S Volz, J Tulkki - Physical Review B, 2015 - APS
Owing to their long phonon mean free paths (MFPs) and high thermal conductivity, carbon
nanotubes (CNTs) are ideal candidates for, eg, removing heat from electronic devices. It is …

Anomalous heat conduction and anomalous diffusion in low dimensional nanoscale systems

S Liu, XF Xu, RG Xie, G Zhang, BW Li - The European Physical Journal B, 2012 - Springer
Heat conduction is an important energy transport process in nature. Phonon is the major
energy carrier for heat in semiconductors and dielectric materials. In analogy to Ohm's law of …

Numerical test of hydrodynamic fluctuation theory in the Fermi-Pasta-Ulam chain

SG Das, A Dhar, K Saito, CB Mendl, H Spohn - Physical Review E, 2014 - APS
Recent work has developed a nonlinear hydrodynamic fluctuation theory for a chain of
coupled anharmonic oscillators governing the conserved fields, namely, stretch, momentum …

Nonequilibrium Green's function method for thermal transport in junctions

JS Wang, N Zeng, J Wang, CK Gan - … Review E—Statistical, Nonlinear, and Soft …, 2007 - APS
We present a detailed treatment of the nonequilibrium Green's function method for thermal
transport due to atomic vibrations in nanostructures. Some of the key equations, such as self …

Stationary states of activity-driven harmonic chains

R Sarkar, I Santra, U Basu - Physical Review E, 2023 - APS
We study the stationary state of a chain of harmonic oscillators driven by two active
reservoirs at the two ends. These reservoirs exert correlated stochastic forces on the …

Activity driven transport in harmonic chains

I Santra, U Basu - SciPost Physics, 2022 - scipost.org
The transport properties of an extended system driven by active reservoirs is an issue of
paramount importance, which remains virtually unexplored. Here we address this issue, for …

Heat conduction in a three dimensional anharmonic crystal

K Saito, A Dhar - Physical review letters, 2010 - APS
We perform nonequilibrium simulations of heat conduction in a three dimensional
anharmonic lattice. By studying slabs of length N and width W, we examine the crossover …

Heat Conduction in the αβ Fermi–Pasta–Ulam Chain

SG Das, A Dhar, O Narayan - Journal of Statistical Physics, 2014 - Springer
Recent simulation results on heat conduction in a one-dimensional chain with an
asymmetric inter-particle interaction potential and no onsite potential found non-anomalous …