# Finite amplitude method for the quasiparticle random-phase approximation

## Abstract

We present the finite amplitude method (FAM), originally proposed in Ref. [17], for superfluid systems. A Hartree-Fock-Bogoliubov code may be transformed into a code of the quasiparticle-random-phase approximation (QRPA) with simple modifications. This technique has advantages over the conventional QRPA calculations, such as coding feasibility and computational cost. We perform the fully self-consistent linear-response calculation for the spherical neutron-rich nucleus {sup 174}Sn, modifying the hfbrad code, to demonstrate the accuracy, feasibility, and usefulness of the FAM.

- Authors:

- RIKEN Nishina Center, Wako-shi 351-0198 (Japan)
- (Italy)
- (Japan)

- Publication Date:

- OSTI Identifier:
- 21596560

- Resource Type:
- Journal Article

- Journal Name:
- Physical Review. C, Nuclear Physics

- Additional Journal Information:
- Journal Volume: 84; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.84.014314; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACCURACY; AMPLITUDES; HARTREE-FOCK-BOGOLYUBOV THEORY; MODIFICATIONS; NEUTRON-RICH ISOTOPES; RANDOM PHASE APPROXIMATION; SPHERICAL CONFIGURATION; SUPERFLUIDITY; APPROXIMATIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCULATION METHODS; CONFIGURATION; ISOTOPES; RADIOISOTOPES

### Citation Formats

```
Avogadro, Paolo, Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milan, INFN, Sezione di Milano, Milan, Nakatsukasa, Takashi, and Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571.
```*Finite amplitude method for the quasiparticle random-phase approximation*. United States: N. p., 2011.
Web. doi:10.1103/PHYSREVC.84.014314.

```
Avogadro, Paolo, Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milan, INFN, Sezione di Milano, Milan, Nakatsukasa, Takashi, & Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571.
```*Finite amplitude method for the quasiparticle random-phase approximation*. United States. doi:10.1103/PHYSREVC.84.014314.

```
Avogadro, Paolo, Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milan, INFN, Sezione di Milano, Milan, Nakatsukasa, Takashi, and Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571. Fri .
"Finite amplitude method for the quasiparticle random-phase approximation". United States. doi:10.1103/PHYSREVC.84.014314.
```

```
@article{osti_21596560,
```

title = {Finite amplitude method for the quasiparticle random-phase approximation},

author = {Avogadro, Paolo and Dipartimento di Fisica, Universita degli Studi di Milano, via Celoria 16, I-20133 Milan and INFN, Sezione di Milano, Milan and Nakatsukasa, Takashi and Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8571},

abstractNote = {We present the finite amplitude method (FAM), originally proposed in Ref. [17], for superfluid systems. A Hartree-Fock-Bogoliubov code may be transformed into a code of the quasiparticle-random-phase approximation (QRPA) with simple modifications. This technique has advantages over the conventional QRPA calculations, such as coding feasibility and computational cost. We perform the fully self-consistent linear-response calculation for the spherical neutron-rich nucleus {sup 174}Sn, modifying the hfbrad code, to demonstrate the accuracy, feasibility, and usefulness of the FAM.},

doi = {10.1103/PHYSREVC.84.014314},

journal = {Physical Review. C, Nuclear Physics},

issn = {0556-2813},

number = 1,

volume = 84,

place = {United States},

year = {2011},

month = {7}

}

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