A4 Article in conference proceedings
Thouless-Valatin moment of inertia and removal of the spurious mode in the linear response theory (2020)

Kortelainen, Markus (2020). Thouless-Valatin moment of inertia and removal of the spurious mode in the linear response theory. In INPC2019 : 27th International Nuclear Physics Conference (Journal of Physics : Conference Series, 1643. IOP Publishing Ltd, 012142. DOI: 10.1088/1742-6596/1643/1/012142

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Publication details

All authors or editors: Kortelainen, Markus

Parent publication: INPC2019 : 27th International Nuclear Physics Conference

Place and date of conference: Glasgow, UK, 29.7.-2.8.2019

Journal or series: Journal of Physics : Conference Series

ISSN: 1742-6588

eISSN: 1742-6596

Publication year: 2020

Number in series: 1643

Article number: 012142

Publisher: IOP Publishing Ltd

Publication country: United Kingdom

Publication language: English

DOI: https://doi.org/10.1088/1742-6596/1643/1/012142

Open Access: Publication published in an open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/73689

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2004.14268

Abstract

Symmetry breaking at the mean-field level leads to an appearance of a symmetry restoring Nambu-Goldstone (NG) mode in the linear response theory. These modes represent a special kind of collective motion of the system. However, they can interfere with the calculated intrinsic physical excitations and, hence, they are often called as spurious modes. I discuss translational and rotational NG mode and the inertia parameter associated with these modes, by using the finite amplitude method formalism. I will also discuss how to remove spurious mode from the calculated transition strength function.

Keywords: nuclear physics; density functional theory

Free keywords: Collective motions; Finite amplitude method; Inertia parameters; Linear-response theory; Mean-field level; Moment of inertia; Symmetry-breaking; Transition strengths

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