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Investigation of Entanglement in the Moshinsky Atom | ||
فیزیک کاربردی ایران | ||
Volume 13, Issue 3 - Serial Number 34, October 2023, Pages 140-162 PDF (2.08 M) | ||
Document Type: Research Paper | ||
DOI: 10.22051/ijap.2023.38413.1246 | ||
Authors | ||
Hamdollah Salehi* 1; Mehrzad Ashrafpour2; Hamide Arimashi3 | ||
1Professor, Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
2Assistant Professor, Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran | ||
3M. Sc. Student, Department of Physics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran. | ||
Abstract | ||
One of the most critical aspects of studying entanglement states is quantifying the degree of entanglement. One of the entanglement measures for pure states is Van- Neumann entropy, which is why Van-Neumann entropy is also called entanglement entropy. In this work, to calculate the entanglement of a three-particle atom called the Moshinsky atom; first, the reduced density matrix was calculated and then using the coordinates of the three particles in the lithium atom, the entropy entanglement was calculated. We obtained the entropy of entanglement in terms of the frequency parameter related to the external coordinate field. | ||
Keywords | ||
Entanglement; Density Functional Theory; Many-body Systems; Moshinsky Atom; Van-Neumann Entropy; Reduced Density Matrix | ||
References | ||
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