Dynamical properties of constrained drops |
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Authors: | M Ison P Balenzuela A Bonasera CO Dorso |
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Institution: | (1) Departamento de Fısica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina, AR;(2) INFN-Laboratorio Nazionale del Sud, Via S. Sofia 44, I-95123 Catania, Italy, IT |
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Abstract: | In this communication we analyze the behavior of excited drops contained in spherical volumes. We study different properties
of the dynamical systems, i.e. the maximum Lyapunov exponent MLE, the asymptotic distance in momentum space d
∞ and the normalized variance of the maximum fragment. It is shown that the constrained system behaves as undergoing a first-order
phase transition at low densities while as a second-order one at high densities. The transition from liquid-like to vapor-like
behavior is signaled both by the caloric curves, the thermal response functions and the MLE. The relationship between the
MLE, d
∞, and the caloric curve is explored.
Received: 28 March 2002 / Accepted: 17 May 2002 |
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Keywords: | PACS 24 60 Lz Chaos in nuclear systems – 24 60 -k Statistical theory and fluctuations |
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