Practical solution to the Monte Carlo sign problem: Realistic calculations of Fe54

Y. Alhassid; D. J. Dean; S. E. Koonin; G. Lang; W. E. Ormand

doi:10.1103/PhysRevLett.72.613

Practical solution to the Monte Carlo sign problem: Realistic calculations of Fe54

Y. Alhassid, D. J. Dean, S. E. Koonin, G. Lang, W. E. Ormand

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

Abstract

We present a practical solution to the sign problem in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for the Fe54 in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller + strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.

Original language	English (US)
Pages (from-to)	613-616
Number of pages	4
Journal	Physical Review Letters
Volume	72
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.72.613
State	Published - 1994

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.72.613

Cite this

@article{c55fc90b691e455ea0a2ffe5beef9cdb,

title = "Practical solution to the Monte Carlo sign problem: Realistic calculations of Fe54",

abstract = "We present a practical solution to the sign problem in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for the Fe54 in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller + strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.",

author = "Y. Alhassid and Dean, {D. J.} and Koonin, {S. E.} and G. Lang and Ormand, {W. E.}",

year = "1994",

doi = "10.1103/PhysRevLett.72.613",

language = "English (US)",

volume = "72",

pages = "613--616",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Practical solution to the Monte Carlo sign problem

T2 - Realistic calculations of Fe54

AU - Alhassid, Y.

AU - Dean, D. J.

AU - Koonin, S. E.

AU - Lang, G.

AU - Ormand, W. E.

PY - 1994

Y1 - 1994

N2 - We present a practical solution to the sign problem in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for the Fe54 in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller + strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.

AB - We present a practical solution to the sign problem in the auxiliary field Monte Carlo approach to the nuclear shell model. The method is based on extrapolation from a continuous family of problem-free Hamiltonians. To demonstrate the resultant ability to treat large shell-model problems, we present results for the Fe54 in the full fp-shell basis using the Brown-Richter interaction. We find the Gamow-Teller + strength to be quenched by 58% relative to the single-particle estimate, in better agreement with experiment than previous estimates based on truncated bases.

UR - http://www.scopus.com/inward/record.url?scp=4243211746&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243211746&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.72.613

DO - 10.1103/PhysRevLett.72.613

M3 - Article

AN - SCOPUS:4243211746

SN - 0031-9007

VL - 72

SP - 613

EP - 616

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

ER -

Practical solution to the Monte Carlo sign problem: Realistic calculations of Fe54

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this