Finite-size scaling exponents in the interacting boson model
Statistical Mechanics
2007-05-23 v2 Nuclear Theory
Quantum Physics
Abstract
We investigate the finite-size scaling exponents for the critical point at the shape phase transition from U(5) (spherical) to O(6) (deformed -unstable) dynamical symmetries of the Interacting Boson Model, making use of the Holstein-Primakoff boson expansion and the continuous unitary transformation technique. We compute exactly the leading order correction to the ground state energy, the gap, the expectation value of the -boson number in the ground state and the transition probability from the ground state to the first excited state, and determine the corresponding finite-size scaling exponents.
Cite
@article{arxiv.cond-mat/0503240,
title = {Finite-size scaling exponents in the interacting boson model},
author = {S. Dusuel and J. Vidal and J. M. Arias and J. Dukelsky and J. E. Garcia-Ramos},
journal= {arXiv preprint arXiv:cond-mat/0503240},
year = {2007}
}
Comments
4 pages, 3 figures, published version