The quantum phase transitional behavior of the U(3) boson model is studied. Low-lying levels, overlaps of wavefunctions with those in the d-wave dominant and s- and d-wave mixed phases, as well as ground state occupation probabilities of s- and d-components are examined as functions of the control parameter and the number of particles. The results indicated that the s- and d-wave component change in the wavefunction possibly is a first order quantum phase transition in the large N limit. © 2005 Elsevier B.V. All rights reserved.
Publication Source (Journal or Book title)
Physics Letters, Section A: General, Atomic and Solid State Physics
Pan, F., Zhang, Y., Jin, S., Draayer, J., Ge, M., & Birman, J. (2005). Quantum phase transition in the U(3) boson system. Physics Letters, Section A: General, Atomic and Solid State Physics, 341 (1-4), 291-296. https://doi.org/10.1016/j.physleta.2005.04.086