Two-dimensional (2D) Dirac states with linear dispersion have been observed in graphene and on the surface of topological insulators. 2D Dirac states discovered so far are exclusively pinned at high-symmetry points of the Brillouin zone, for example, surface Dirac states at
Hard disks systems are often considered as prototypes for simple fluids. In a statistical mechanics context, the hard disk configuration space is generally quotiented by the action of various symmetry groups. The changes in the topological and geometric properties of the configuration spaces effected by such quotient maps are studied for small numbers of disks on a square and hexagonal torus. A metric is defined on the configuration space and the various quotient spaces that respects the desired symmetries. This is used to construct explicit triangulations of the configuration spaces as
- Award ID(s):
- 1839370
- NSF-PAR ID:
- 10370527
- Publisher / Repository:
- Springer Science + Business Media
- Date Published:
- Journal Name:
- Granular Matter
- Volume:
- 24
- Issue:
- 3
- ISSN:
- 1434-5021
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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