Comment on ``Bicritical and Tetracritical Phenomena and Scaling Properties of the SO(5) Theory,'' [X. Hu, Phys. Rev. Lett. 87, 057004 (2001)]
| dc.creator | Calabrese, Pasquale | |
| dc.creator | Pelissetto, Andrea | |
| dc.creator | Vicari, Ettore | |
| dc.date | 2002-03-26 | |
| dc.date.accessioned | 2026-07-07T02:44:49Z | |
| dc.date.available | 2026-07-07T02:44:49Z | |
| dc.description | We show that, in the most general $N$-component theory with symmetry O(n_1)+O(n_2), N=n_1+n_2\geq 3, the O(N)-symmetric fixed point has (at least) three unstable directions: the temperature, the quadratic anisotropy, and the spin-4 quartic perturbation. This implies that in the SO(5) theory of high-$T_c$ superconductivity an additional tuning is required to obtain an enlarged SO(5) symmetry. This is in contrast with the recent numerical results reported by Hu, Phys. Rev. Lett. 87, 057004 (2001). \ | |
| dc.description | 2 pages | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0203533 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0203533 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/19083 | |
| dc.subject | Superconductivity | |
| dc.subject | Statistical Mechanics | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Comment on ``Bicritical and Tetracritical Phenomena and Scaling Properties of the SO(5) Theory,'' [X. Hu, Phys. Rev. Lett. 87, 057004 (2001)] | |
| dc.type | text |