【摘 要】
：
Collective motion of active particles with polar alignment is investigated on a sphere.We discussed the factors that affect particle swarm motion and define an order parameter that can show the degree of particle swarm motion.In the model,we added a polar
【机 构】
：
Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics a
论文部分内容阅读
Collective motion of active particles with polar alignment is investigated on a sphere.We discussed the factors that affect particle swarm motion and define an order parameter that can show the degree of particle swarm motion.In the model,we added a polar alignment strength,along with Gaussian curvature,affecting particles swarm motion.We find that when the force exceeds a certain limit,the order parameter will decrease with the increase of the force.Combined with our definition of order parameter and observation of the model,the reason is that particles begin to move side by side under the influence of polar forces.In addition,the effects of velocity,rotational diffusion coefficient,and packing fraction on particle swarm motion are discussed.It is found that the rotational diffusion coefficient and the packing fraction have a great influence on the clustering motion of particles,while the velocity has little influence on the clustering motion of particles.
其他文献
The cooperative behaviors resulted from the interaction of coupled identical oscillators have been investigated inten-sively.However,the coupled oscillators in practice are nonidentical,and there exist mismatched parameters.It has been proved that under c
The nature of the Cooper pairing in the paradigmatic unconventional superconductor Sr2RuO4 is an outstanding puzzle in condensed matter physics.Despite the tremendous efforts made in the past twenty-seven years,neither the pairing symmetry nor the underly
Open physical systems described by the non-Hermitian Hamiltonian with parity-time-reversal(PT)symmetry show peculiar phenomena,such as the presence of an exceptional point(EP)at which the PT symmetry is broken and two resonant modes of the Hamiltonian bec
Zirconium tritiated(ZrTx)is an alternative target material for deuteron-triton(D-T)reaction neutron generator.The isotopic replacement and microstructure evolution induced by hydrogen isotope implantation could significantly affect the performance of the
Lead zirconate titanate piezoelectric ceramics have important applications in space and aerospace technology,but the effect and physical mechanism of charged particle radiation on their performance yet to be clarified.In this study,we characterized PbZr0.
The last 15 years have witnessed important progresses in our understanding of the mechanism of superconductivity in the high-Tc cuprates.There is now strong evidence that the strange metal behavior is induced by the quantum criti-cal fluctuation at the ps
Formaldehyde as an air pollutant to adverse health effects for humanity has been getting attention.The adsorption and dissociation of formaldehyde(HCHO)on the CoxCe1-xO2-δ(110)surface were investigated by the density functional theory(DFT)calculations.We
A method of measuring the vortex beam topological charge(TC)is proposed based on a device that can directly extract the plane wave form from the vortex beam in which the different propagation angles of the plane waves are uniquely related to the different
The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work.A continuum covering 365 nm to 445 nm is obtained when 125-pJ frequency-doubled Ti:sapphire laser pulses are applied to six thin fused silica plat
A new type of quantum theory known as time-dependent PT-symmetric quantum mechanics has received much attention recently.It has a conceptually intriguing feature of equipping the Hilbert space of a PT-symmetric system with a time-varying inner product.In