Spin and chiral stiffness of the XY spin glass in two dimensions
| dc.creator | Weigel, Martin | |
| dc.creator | Gingras, Michel J. P. | |
| dc.date | 2006-08-13 | |
| dc.date.accessioned | 2026-07-07T07:54:39Z | |
| dc.date.available | 2026-07-07T07:54:39Z | |
| dc.description | We analyze the zero-temperature behavior of the XY Edwards-Anderson spin glass model on a square lattice. A newly developed algorithm combining exact ground-state computations for Ising variables embedded into the planar spins with a specially tailored evolutionary method, resulting in the genetic embedded matching (GEM) approach, allows for the computation of numerically exact ground states for relatively large systems. This enables a thorough re-investigation of the long-standing questions of (i) extensive degeneracy of the ground state and (ii) a possible decoupling of spin and chiral degrees of freedom in such systems. The new algorithm together with appropriate choices for the considered sets of boundary conditions and finite-size scaling techniques allows for a consistent determination of the spin and chiral stiffness scaling exponents. | |
| dc.description | 6 pages, 2 figures, proceedings of the HFM2006 conference, to appear in a special issue of J. Phys.: Condens. Matter | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608296 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608296 | |
| dc.identifier | J. Phys.: Condens. Matter 19, 145217 (2007) | |
| dc.identifier | doi:10.1088/0953-8984/19/14/145217 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126694 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Spin and chiral stiffness of the XY spin glass in two dimensions | |
| dc.type | text |