Phys. Rev. Lett. 81, 1191–1194 (1998)Phase Coexistence in Transitional Nuclei and the Interacting-Boson ModelReceived 13 May 1998; published in the issue dated 10 August 1998 Recent data provide evidence for coexisting phases at low energy in the spherical-deformed transitional nucleus 152Sm. The nature of the wave functions at the spherical-deformed phase transition in nuclei is analyzed within the framework of the interacting-boson model. It is shown that in the U(5)-SU(3) transition, two phases coexist in a very small region of parameter space around the critical value of the control parameter ξ. The coexistence region with two minima in the potential shrinks to zero as one moves to the U(5)-O(6) transition. Implications for other systems are briefly mentioned. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.1191
DOI:
10.1103/PhysRevLett.81.1191
PACS:
21.60.Fw, 21.10.Re, 27.70.+q
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