Dusuel, SébastienVidal, JulienArias Carrasco, José Miguel2012-03-122012-03-122005-07-14Dusuel, S., Vidal, J., Arias Carrasco, J.M.: "Finite-size scaling exponents in the interacting boson model". Physical Review C. Vol. 72, n. 1 (2005). ISSN 0556-28130556-2813http://hdl.handle.net/10272/5523We 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 transfor- mation technique. We compute exactly the leading order correction to the ground state energy, the gap, the expectation value of the d-boson number in the ground state and the E2 transition prob- ability from the ground state to the first excited state, and determine the corresponding finite-size scaling exponents.engAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/BosonesInteracting boson modelQuantum phase transitionsjournal article10.1103/PhysRevC.72.011301open access