317 citations · 2.7k across the 87 of their papers we have counts for
22 papers · 1 filter
Validity of Fourier's law in one-dimensional momentum-conserving lattices with asymmetric interparticle interactions
Lei Wang, Bambi Hu, Baowen Li
We have numerically studied heat conduction in a few one-dimensional momentum-conserving lattices with asymmetric interparticle interactions by the nonequilibrium heat bath method,…
Double negative differential thermal resistance induced by the nonlinear on-site potentials
Bao-quan Ai, Wei-rong Zhong, Bambi Hu
We study heat conduction through one-dimensional homogeneous lattices in the presence of the nonlinear on-site potentials containing the bounded and unbounded parts, and the harmon…
T-Shape Molecular Heat Pump
Wei-Rong Zhong, Bambi Hu
We report on the first molecular device of heat pump modeled by a T-shape Frenkel-Kontorova lattice. The system is a three-terminal device with the important feature that the heat…
Heat conduction in deformable Frenkel-Kontorova lattices: thermal conductivity and negative differential thermal resistance
Bao-quan Ai, Bambi Hu
Heat conduction through the Frenkel-Kontorova (FK) lattices is numerically investigated in the presence of a deformable substrate potential. It is found that the deformation of the…
Optimizing transport efficiency on scale-free networks through assortative or dissortative topology
Yu-hua Xue, Jian Wang, Liang Li +2
We find that transport on scale-free random networks depends strongly on degree-correlated network topologies whereas transport on Erds-Rnyi networks is insens…
Thermal conductivity of anharmonic lattices: Effective phonons and quantum corrections
Dahai He, Sahin Buyukdagli, Bambi Hu
We compare two effective phonon theories, which have both been applied recently to study heat conduction in anharmonic lattices. In particular, we study the temperature dependence…
Origin of negative differential thermal resistance in a chain of two weakly coupled nonlinear lattices
Dahai He, Sahin Buyukdagli, Bambi Hu
Negative differential resistance in electronic conduction has been extensively studied, but it is not the case for its thermal counterpart, namely, negative differential thermal re…
Critical Casimir force in the superfluid phase: effect of fluctuations
Shyamal Biswas, J. K. Bhattacharjee, Himadri S. Samanta +2
We have considered the critical Casimir force on a He film below and above the bulk point. We have explored the role of fluctuations around the mean field theory in a pertu…
Asymmetric Properties of Heat Conduction in a One-Dimensional Frenkel-Kontorova Model
Bambi Hu, Lei Yang, Yong Zhang
In this Letter, we show numerically that the rectifying effect of heat flux in a one-dimensional two-segment Frenkel-Kontorova chain demonstrated in recent literature is merely ava…
Heat conduction in one-dimensional Yukawa chains
Bambi Hu, Haibin Li, Bai-Song Xie
Heat conduction in one-dimensional Yukawa chains is investigated. It is shown numerically that it has the abnormal heat conduction which is proportional to the system size. Effects…
Finite thermal conductivity in 1D models having zero Lyapunov exponents
Baowen Li, Lei Wang, Bambi Hu
Heat conduction in three types of 1D channels are studied. The channels consist of two parallel walls, right triangles as scattering obstacles, and noninteracting particles. The tr…
Nonlinear Modulation of Multi-Dimensional Lattice Waves
Guoxiang Huang, Vladimir V. Konotop, Hon-Wah Tam +1
The equations governing weakly nonlinear modulations of -dimensional lattices are considered using a quasi-discrete multiple-scale approach. It is found that the evolution of a…
Quantum Frenkel-Kontorova Model
Bambi Hu, Baowen Li
This paper gives a review of our recent work on the quantum Frenkel-Kontorova model. Using the squeezed state theory and the quantum Monte Carlo method, we have studied the effects…
Mode-locking of incommensurate phase by quantum zero point energy in the Frenkel-Kontorova model
Bambi Hu, Baowen Li, Hong Zhao
In this paper, it is shown that a configuration modulated system described by the Frenkel-Kontorova model can be locked at an incommensurate phase when the quantum zero point energ…
A cellular automaton traffic flow model between the Fukui-Ishibashi and Nagel-Schreckenberg models
Lei Wang, Bing-Hong Wang, Bambi Hu
We propose and study a new one-dimensional traffic flow cellular automaton (CA) model of high speed vehicles with the Fukui-Ishibashi-type acceleration for all cars and the Nagel-S…
Disturbance spreading in incommensurate and quasiperiodic systems
Bambi Hu, Baowen Li, Peiqing Tong
The propagation of an initially localized excitation in one dimensional incommensurate, quasiperiodic and random systems is investigated numerically. It is discovered that the time…
Wave transmission, phonon localization and heat conduction of 1D Frenkel-Kontorova chain
Peiqing Tong, Baowen Li, Bambi Hu
We study the transmission coefficient of a plane wave through a 1D finite quasi-periodic system -- the Frenkel-Kontorova (FK) model -- embedding in an infinite uniform harmonic cha…
Array-induced collective transport in the Brownian motion of coupled nonlinear oscillator systems
Zhigang Zheng, Bambi Hu, Gang Hu
Brownian motion of an array of harmonically coupled particles subject to a periodic substrate potential and driven by an external bias is investigated. In the linear response limit…
Resonant steps and spatiotemporal dynamics in the damped dc-driven Frenkel-Kontorova chain
Zhigang Zheng, Bambi Hu, Gang Hu
Kink dynamics of the damped Frenkel-Kontorova (discrete sine-Gordon) chain driven by a constant external force are investigated. Resonant steplike transitions of the average veloci…
Spatiotemporal dynamics of discrete sine-Gordon lattices with sinusoidal couplings
Zhigang Zheng, Bambi Hu, Gang Hu
The spatiotemporal dynamics of a damped sine-Gordon chain with sinusoidal nearest-neighbor couplings driven by a constant uniform force are discussed. The velocity characteristics…
Statistical analysis of scars in stadium billiard
Baowen Li, Bambi Hu
In this paper, by using our improved plane wave decomposition method, we study the scars in the eigenfunctions of the stadium billiard from very low state to as high as about the o…
Heat conduction in one dimensional chains
Bambi Hu, Baowen LI, Hong Zhao
We study numerically the thermal conductivity in several different one dimensional chains. We show that the phonon-lattice interaction is the main ingredient of the Fourier heat la…