2026-07-20T01:04:06Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/519322023-08-28T19:55:29Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Carmona, J. M.
author
Cruz, A.
author
Fernández Pérez, Luis Antonio
author
Jiménez, S.
author
Martín Mayor, Víctor
author
Muñoz Sudupe, Antonio
author
Pech, J.
author
Ruiz Lorenzo, J. J.
author
Tarancón, A.
author
Téllez, P.
2023-06-20T11:17:59Z
2023-06-20T11:17:59Z
2003-05-08
0370-2693
10.1016/S0370-2693(03)00382-4
https://hdl.handle.net/20.500.14352/51932
http://doi.org/10.1016/S0370-2693(03)00382-4
http://www.sciencedirect.com/
It is shown that a bosonic formulation of the double-exchange model, one of the classical models for magnetism, generates dynamically a gauge-invariant phase in a finite region of the phase diagram. We use analytical methods, Monte Carlo simulations and finite-size scaling analysis. We study the transition line between that region and the paramagnetic phase. The numerical results show that this transition line belongs to the universality class of the antiferromagnetic RP^(2) model. The fact that one can define a universality class for the antiferromagnetic RP^(2) model, different from the one of the O(N) models, is puzzling and somehow contradicts naive expectations about universality.
eng
Dynamical generation of a gauge symmetry in the double-exchange model
journal article
URL
https://docta.ucm.es/bitstreams/157a2299-af07-4551-8d39-649f5a867463/download
File
MD5
16717224ec5cf2fce31f9b2d3b0a3d52
269753
application/pdf
FernándezPérezLuisAntonio34LIBRE.pdf