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(Seminar) Stationary phase approximation to path integral based on time-dependent mean field
2019-03-06  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title

题目

Stationary phase approximation to path integral based on time-dependent mean field

Speaker

报告人

Fang Ni (倪放)

Affiliation

所在单位

University of Tsukuba, Japan

Date

日期

15:00, Mar 6 (Wednesday), 2019

 

Venue

地点

Room 6420, ITP NEW BUILDING

Abstract

摘要

We aim to describe the low-lying excited states in nuclei based on the time-dependent mean field theory. Quantum fluctuation is large in low-lying excitation energy region, such as shape coexistence. Some theoretical frameworks, such as generator coordinate method (GCM) and Bohr collective model, are often applied to describe the large amplitude collective motions. Here, we introduce a method which is called stationary phase approximation (SPA) to the path integral. Using SPA, we can obtain microscopic wave functions with good quantum number without any artificial assumption. In this presentation, I will explain the theoretical framework of SPA, and discuss a new method about the application of SPA in non-integrable systems. Also I will show some results about the advantage of SPA to describe the pairing collective motions.

Contact Person

所内联系人

Shan-Gui Zhou (周善贵)
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