Fisher Information, delocalization and the semiclassical description of molecular rotation

S. CURILEF; F. PENNINI; A. PLASTINO; G. L. FERRI

JOURNAL OF PHYSICS. A - MATHEMATICAL AND GENERAL

IOP Publishing

Lugar: UK; Año: 2007 vol. 40 p. 5127 - 5140

0305-4470

We discuss phase-space delocalization for the rigid rotor within a semiclassical context by recourse to the Husimi distributions of both the linear and the 3D anisotropic instances. The Husimi function can be viewed in a variety of ways. In particular, we obtain it as the expectation value of the density operator in a suitable basis of coherent states. Our treatment is based upon the concomitant Fisher information measures. The pertinent Wehrl entropy is also investigated in the linear case.