Continuum QRPA in the coordinate space representation

K. Hagino; H. Sagawa

doi:10.1016/S0375-9474(01)01122-8

Continuum QRPA in the coordinate space representation

K. Hagino, H. Sagawa

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

We formulate a quasiparticle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the ¹²⁰Sn nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying collective mode is also discussed.

Original language	English
Pages (from-to)	82-94
Number of pages	13
Journal	Nuclear Physics A
Volume	695
Issue number	1-4
DOIs	https://doi.org/10.1016/S0375-9474(01)01122-8
Publication status	Published - 2001 Dec 3
Externally published	Yes

Keywords

21.10.Re
21.60.-n
21.60.Jz
23.20.-g
Collective excitation
Continuum
Giant resonance
Low-lying mode
Pairing
Random phase approximation

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0375-9474(01)01122-8

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@article{99725f272dd84c978fb80d6a9d916666,

title = "Continuum QRPA in the coordinate space representation",

abstract = "We formulate a quasiparticle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the 120Sn nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying collective mode is also discussed.",

keywords = "21.10.Re, 21.60.-n, 21.60.Jz, 23.20.-g, Collective excitation, Continuum, Giant resonance, Low-lying mode, Pairing, Random phase approximation",

author = "K. Hagino and H. Sagawa",

note = "Funding Information: We are grateful to the Institute for Nuclear Theory at the University of Washington, where this work was initiated during the INT program INT-00-3 on “Nuclear structure for the 21st century.” We thank its hospitality and a partial financial support for this work. We thank also K. Matsuyanagi and Nguyen Van Giai for useful and stimulating discussions and Baha Balantekin for discussions on the RPA approach to neutrino–nucleus reactions. This work is supported in part by the Ministry of Education, Science, Sports and Culture in Japan by Grant-In-Aid for Scientific Research under the program number (C(2)) 12640284.",

year = "2001",

month = dec,

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doi = "10.1016/S0375-9474(01)01122-8",

language = "English",

volume = "695",

pages = "82--94",

journal = "Nuclear Physics A",

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number = "1-4",

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TY - JOUR

T1 - Continuum QRPA in the coordinate space representation

AU - Hagino, K.

AU - Sagawa, H.

N1 - Funding Information: We are grateful to the Institute for Nuclear Theory at the University of Washington, where this work was initiated during the INT program INT-00-3 on “Nuclear structure for the 21st century.” We thank its hospitality and a partial financial support for this work. We thank also K. Matsuyanagi and Nguyen Van Giai for useful and stimulating discussions and Baha Balantekin for discussions on the RPA approach to neutrino–nucleus reactions. This work is supported in part by the Ministry of Education, Science, Sports and Culture in Japan by Grant-In-Aid for Scientific Research under the program number (C(2)) 12640284.

PY - 2001/12/3

Y1 - 2001/12/3

N2 - We formulate a quasiparticle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the 120Sn nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying collective mode is also discussed.

AB - We formulate a quasiparticle random phase approximation (QRPA) in the coordinate space representation. This model is a natural extension of the RPA model of Shlomo and Bertsch to open-shell nuclei in order to take into account pairing correlations together with the coupling to the continuum. We apply it to the 120Sn nucleus and show that low-lying excitation modes are significantly influenced by the pairing effects although the effects are marginal in the giant resonance region. The dependence of the pairing effect on the parity of low-lying collective mode is also discussed.

KW - 21.10.Re

KW - 21.60.-n

KW - 21.60.Jz

KW - 23.20.-g

KW - Collective excitation

KW - Continuum

KW - Giant resonance

KW - Low-lying mode

KW - Pairing

KW - Random phase approximation

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UR - http://www.scopus.com/inward/citedby.url?scp=0003046510&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(01)01122-8

DO - 10.1016/S0375-9474(01)01122-8

M3 - Article

AN - SCOPUS:0003046510

VL - 695

SP - 82

EP - 94

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-4

ER -

Continuum QRPA in the coordinate space representation

Abstract

Keywords

ASJC Scopus subject areas

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