arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1901.06018cond-mat.stat-mechcond-mat.softphysics.atom-phquant-ph
收藏

具有扩散边的标量活性物质中的玻色-爱因斯坦凝聚

Bose-Einstein Condensation in Scalar Active Matter with Diffusivity Edge

Ramin Golestanian

摘要:

由于其显着的性能,系统,表现出自组织的组成部分,从内在的微观活动已被广泛研究,在过去的二十年。在一类通用的活性物质中,活性组分之间的相互作用通过平均场单粒子描述中的有效密度相关扩散率来表示。在这里,一类新的标量活性物质提出了通过将扩散边缘的动力学:当系统的局部密度超过临界阈值,扩散消失。的扩散率边缘的影响进行了研究的外部电位的影响下,引入的能力,通过改变有效的温度,这是定义在单粒子的扩散率和流动性方面的控制系统的行为。在临界有效温度下,被谐振势捕获的系统发生了凝聚相变,这与玻色-爱因斯坦凝聚在形式上有相似之处.

英文摘要:

Due to their remarkable properties, systems that exhibit self-organization of their components resulting from intrinsic microscopic activity have been extensively studied in the last two decades. In a generic class of active matter, the interactions between the active components are represented via an effective density-dependent diffusivity in a mean-field single-particle description. Here, a new class of scalar active matter is proposed by incorporating a diffusivity edge into the dynamics: when the local density of the system surpasses a critical threshold, the diffusivity vanishes. The effect of the diffusivity edge is studied under the influence of an external potential, which introduces the ability to control the behaviour of the system by changing an effective temperature, which is defined in terms of the single-particle diffusivity and mobility. At a critical effective temperature, a system that is trapped by a harmonic potential is found to undergo a condensation transition, which manifests formal similarities to Bose-Einstein condensation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑