Excited-state Quantum Phase Transitions in the Finite-<em>N</em> Boson System

DONG Wenting; JIANG He; WANG Xiaoxia; ZHANG Yu

doi:10.11804/NuclPhysRev.35.04.487

In this work, a phenomenological analysis of the excited-state quantum phase transitions (ESQPTs) in the finite-N boson system has been carried out within the interacting boson model in order to reveal the possibility of finding ESQPTs in nuclear systems. Particularly, the angular momentum and finite-N effects on the ESQPTs in the U(5)-SU(3) and SU(3)-O(6) transitional regions have been systematically investigated. The results indicate that the main features of ESQPTs can be well preserved even at a realistic boson number for small angular momentum but will gradually disappear as the angular momentum increases.

Excited-state Quantum Phase Transitions in the Finite-N Boson System

Department of Physics, Liaoning Normal University, Dalian 116029, Liaoning, China

Funds: National Natural Science Foundation of China(11875158,11375005)

Received Date: 2018-10-09

Rev Recd Date: 2018-11-20

Publish Date: 2020-05-03

Key words:

excited-state quantum phase transition /
interacting boson model /
finite-N effect /
effective order parameter

Abstract: In this work, a phenomenological analysis of the excited-state quantum phase transitions (ESQPTs) in the finite-N boson system has been carried out within the interacting boson model in order to reveal the possibility of finding ESQPTs in nuclear systems. Particularly, the angular momentum and finite-N effects on the ESQPTs in the U(5)-SU(3) and SU(3)-O(6) transitional regions have been systematically investigated. The results indicate that the main features of ESQPTs can be well preserved even at a realistic boson number for small angular momentum but will gradually disappear as the angular momentum increases.

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Excited-state Quantum Phase Transitions in the Finite-N Boson System

doi: 10.11804/NuclPhysRev.35.04.487

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通讯作者: 陈斌, bchen63@163.com

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Excited-state Quantum Phase Transitions in the Finite-N Boson System

doi: 10.11804/NuclPhysRev.35.04.487

Department of Physics, Liaoning Normal University, Dalian 116029, Liaoning, China

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Excited-state Quantum Phase Transitions in the Finite-N Boson System

doi: 10.11804/NuclPhysRev.35.04.487

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Excited-state Quantum Phase Transitions in the Finite-N Boson System

doi: 10.11804/NuclPhysRev.35.04.487

Department of Physics, Liaoning Normal University, Dalian 116029, Liaoning, China

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