On the nature of near-threshold bound and virtual states

doi:10.1140/epja/s10050-021-00413-y

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	On the nature of near-threshold bound and virtual states
	Matuschek, Inka 1; Baru, Vadim 2,3,4,5; Guo, Feng-Kun ; Hanhart, Christoph 1
刊名	EUROPEAN PHYSICAL JOURNAL A
	2021
卷号	57 期号:3 页码:101
ISSN号	1434-6001
DOI	10.1140/epja/s10050-021-00413-y
英文摘要	Physical states are characterised uniquely by their pole positions and the corresponding residues. Accordingly, in those parameters also the nature of the states should be encoded. For bound states (poles on the real s-axis below the lowest threshold on the physical sheet) there is an established criterion formulated originally by Weinberg in the 1960s, which allows one to estimate the amount of compact and molecular components in a given state. We demonstrate in this paper that this criterion can be straightforwardly extended to shallow virtual states (poles on the real s-axis below the lowest threshold on the unphysical sheet) which should be classified as molecular. We argue that predominantly non-molecular or compact states exist either as bound states or as resonances (poles on the unphysical sheet off the real energy axis) but not as virtual states. We also discuss the limitations of the mentioned classification scheme.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27424]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Forschungszentrum Julich, Inst Adv Simulat, Inst Kernphys, D-52425 Julich, Germany 2.Julich Ctr Hadron Phys, D-52425 Julich, Germany 3.Univ Bonn, Helmholtz Inst Strahlen & Kemphys, D-53115 Bonn, Germany 4.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 5.NRC Kurchatov Inst, Inst Theoret & Expt Phys, Moscow 117218, Russia 6.Russian Acad Sci, PN Lebedev Phys Inst, Leninskiy Prospect 53, Moscow, Russia 7.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 8.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Matuschek, Inka,Baru, Vadim,Guo, Feng-Kun,et al. On the nature of near-threshold bound and virtual states[J]. EUROPEAN PHYSICAL JOURNAL A,2021,57(3):101.
APA	Matuschek, Inka,Baru, Vadim,Guo, Feng-Kun,&Hanhart, Christoph.(2021).On the nature of near-threshold bound and virtual states.EUROPEAN PHYSICAL JOURNAL A,57(3),101.
MLA	Matuschek, Inka,et al."On the nature of near-threshold bound and virtual states".EUROPEAN PHYSICAL JOURNAL A 57.3(2021):101.