Large-N estimates of universal amplitudes of the CP^{N-1} theory and comparison with the JQ model
| dc.creator | Kaul, Ribhu K. | |
| dc.creator | Melko, Roger | |
| dc.date | 2008-04-14 | |
| dc.date.accessioned | 2026-07-07T09:49:58Z | |
| dc.date.available | 2026-07-07T09:49:58Z | |
| dc.description | We present computations of certain finite-size scaling functions and universal amplitude ratios in the large-N limit of the CP^{N-1} field theory. We pay particular attention to the uniform susceptibility, the spin stiffness and the specific heat. Field theoretic arguments have shown that the long-wavelength description of the phase transition between the Neel and valence bond solid states in square lattice S=1/2 anti-ferromagnets is expected to be the non-compact CP^1 field theory. We provide a detailed comparison between our field theoretic calculations and quantum Monte Carlo data close to the Neel -VBS transition on a S=1/2 square-lattice model with competing four-spin interactions (the JQ model). | |
| dc.description | 15 pages | |
| dc.identifier | https://arxiv.org/abs/0804.2279 | |
| dc.identifier | http://arxiv.org/abs/0804.2279 | |
| dc.identifier | Phys. Rev. B 78, 014417 (2008) | |
| dc.identifier | doi:10.1103/PhysRevB.78.014417 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/164789 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Large-N estimates of universal amplitudes of the CP^{N-1} theory and comparison with the JQ model | |
| dc.type | text |