Phases of Granular Matter

Granular Matter

This is an introductory course into some aspects of the physics of granular materials. Three theoretical questions are looked into more detail corresponding to the three hours of the course: I present some statistical models to describe the shape of a heap under impact and present a way to calculate the angle of repose from the first principle. The second part contains the theoretical framework...

Jamming of Granular Matter

Granular matter: sticky sand.

174 nature materials | VOL 7 | MARCH 2008 | www.nature.com/naturematerials will evaluate the biodistribution of labelled nanoparticles in compartments outside of the joint space. This may better illustrate the routes of clearance from the joint, be they lymphatic or vascular, as well as indicate the functional residence times of the drugs in the tissue. In addition, erosion and proteolysis of t...

Polydirectional stability of granular matter.

We investigate jammed granular matter in a slowly rotating drum partially filled with granular material and find a state of polydirectional stability. In this state, the material responds elastically to small stresses in a wide angular interval while it responds by plastic deformation when subjected to small stresses outside this interval of directions. We describe the evolution of the granulat...

The quantum phases of matter

I present a selective survey of the phases of quantum matter with varieties of manyparticle quantum entanglement. I classify the phases as gapped, conformal, or compressible quantum matter. Gapped quantum matter is illustrated by a simple discussion of the Z2 spin liquid, and connections are made to topological field theories. I discuss how conformal matter is realized at quantum critical point...