Finite-size corrections in the bosonic algebraic approach to two-dimensional systems

This work has been partially supported by the Spanish MEC, by the European regional development fund (FEDER) under Projects No. FIS2008-04189 and CPAN-Ingenio (No. CSD2007-00042), and by the Junta de Andalucia (Projects No. P07-FQM-02962, No. P07-FQM-03014, and No. P07-FQM-02894). P.P.F. acknowledges the Spanish MEC for an FPU grant. The authors thank Jorge Dukelsky, Francesco Iachello, Pieter van Isacker, Amiram Leviatan, and Armando Relano for valuable comments and suggestions.