论文标题
粗糙度密度
Roughness density
论文作者
论文摘要
无序弹性系统的理论是评估从铁磁体到迁移生物细胞的多个系统的物理学的最强大框架之一。在这种形式主义中，人们假设可以用位移字段来描述系统。该磁场可以代表界面位置，半导体设备中涡旋晶格或电荷密度波的变形等。通过构造，该领域是无关的，并且“平滑”，即使对其实验实现远非该描述，这些近似值的后果尚未得到充分探索。我们提出了一个可观察到的新的，以测量可能超出弹性极限并可能包含悬垂和其他缺陷的位移场的粗糙度。我们可观察到的代表着建造界面通用理论的垫脚石。
The theory of disordered elastic systems is one of the most powerful frameworks to assess the physics of multiple systems that span from ferromagnets to migrating biological cells. In this formalism, one assumes that the system can be described with a displacement field. This field can represent an interface position, the deformation of a vortex lattice or charge density waves in semiconductor devices, among others. By construction, this field is univalued and 'smooth', and, even if experimental realisations of it can be far from this description, the consequences of these approximations have not been yet fully explored. We present a new observable to measure the roughness of displacement fields that can be beyond the elastic limit and can contain overhangs and other defects. Our observable represents a stepping stone towards the construction of a general theory for interfaces.
