Nuclear Deformation at Finite Temperature

Alhassid, Y.; Gilbreth, C. N.; Bertsch, G. F.

doi:10.1103/physrevlett.113.262503

Title: Nuclear Deformation at Finite Temperature

Journal Article · Tue Dec 30 00:00:00 EST 2014 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.113.262503· OSTI ID:1565374

Alhassid, Y. ^[1]; Gilbreth, C. N. ^[1]; Bertsch, G. F. ^[2]

Yale Univ., New Haven, CT (United States). Center for Theoretical Physics, Sloane Physics Lab.
Univ. of Washington, Seattle, WA (United States). Dept. of Physics and Inst. of Nuclear Theory

Deformation, a key concept in our understanding of heavy nuclei, is based on a mean-field description that breaks the rotational invariance of the nuclear many-body Hamiltonian. Here, we present a method to analyze nuclear deformations at finite temperature in a framework that preserves rotational invariance. The auxiliary-field Monte-Carlo method is used to generate the statistical ensemble and calculate the probability distribution associated with the quadrupole operator. Applying the technique to nuclei in the rare-earth region, we identify model-independent signatures of deformation and find that deformation effects persist to higher temperatures than the spherical-to-deformed shape phase-transition temperature of mean-field theory.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Yale Univ., New Haven, CT (United States); Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725; AC02-05CH11231; FG02-96ER40963; SC0008499; FG02-00ER411132; FG02-91ER40608

OSTI ID:: 1565374

Alternate ID(s):: OSTI ID: 1181046

Journal Information:: Physical Review Letters, Vol. 113, Issue 26; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 17 works

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