English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Nuclei are rather classical systems in a sense. In the old days, theirphenomena were roughly explained in classical rules such as the liquid dropmodel. This fact may be understood that when we see an finite quantum many bodysystem like nucleus, though which is a group of quantum mechanical particles,its any collective degree of freedom has any classicality. Getting aclassicality does not depend on spatial scales of objects. It is made by aphenomenon called Quantum Decoherence. We have studied about QuantumDecoherence in a finite system as nucleus. In this paper, at the harmonic threebody problem (3 Schroedinger cats), it is shown that one degree of freedom as asub-system would get classicality because of the other two degrees of freedom.Therefore we can assume that a nuclear collective degree of freedom would getclassicality when it couples with any other internal degrees of freedom. Inthis paper, we also note that there is some relationship between the QuantumDecoherence and Crossing of classical orbits in 3 Schroedinger cats model.

Study of Quantum Decoherence in a Finite System -- Three Schroedinger Cats and Crossing of Classical Orbits