Articulo
Fisher information, Wehrl entropy, and Landau diamagnetism
Registration in:
issn:1098-0121
issn:1550-235X
Author
Curilef, S.
Pennini, Flavia
Plastino, Ángel Luis
Institutions
Abstract
Using information theoretic quantities like the Wehrl entropy and Fisher's information measure we study the thermodynamics of the problem leading to Landau's diamagnetism, namely, a free spinless electron in a uniform magnetic field. It is shown that such a problem can be "translated" into that of the thermal harmonic oscillator. We discover a new Fisher-uncertainty relation, derived via the Cramer-Rao inequality, that involves phase space localization and energy fluctuations. Facultad de Ciencias Exactas Instituto de Física La Plata