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Published on: August 2, 2019
Quantum phase transition in the Casten pyramid using entanglement entropy in the semi-classical approximation of
M Ghapanvari1, M Sayedi2, M A Jafarizadeh3,4
1Plasma and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute, Tehran, Iran.
Abstract:
In this research, the quantum phase transition (QPT) in the Casten pyramid has been investigated using entanglement entropy. Energy surfaces and the entanglement entropy have been obtained within the framework of semi-classical approximation interacting boson model-2 (IBM-2) using Schmidt decomposition and coherent states formalism. The results showed that the entanglement entropy is a suitable and efficient tool for investigating QPT and determining critical points in the connected pathes to the [Formula: see text] limit, and pathes of [Formula: see text] and [Formula: see text]. The description of QPT using numerical analysis of energy surfaces confirms the results of entanglement entropy.
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