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Sign problem of the fermionic shadow wave function

Journal Article · · Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
 [1];  [2];  [3];  [4]
  1. Johannes Gutenberg Univ., Mainz (Germany); Graduate School Materials Science, Mainz (Germany)
  2. Univ. of Trento (Italy); Istituto Nazionale di Fisica Nucleare, Trento (Italy). Trento Institute for Fundamental Physics and Applications (INFN-TIFPA)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Johannes Gutenberg Univ., Mainz (Germany); Univ. Paderborn (Germany)
Here, we present a whole series of methods to alleviate the sign problem of the fermionic shadow wave function in the context of variational Monte Carlo. The effectiveness of our techniques is demonstrated on liquid 3He. We found that although the variance is reduced, the gain in efficiency is restricted by the increased computational cost. Yet, this development not only extends the scope of the fermionic shadow wave function, but also facilitates highly accurate quantum Monte Carlo simulations previously thought not feasible.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
Carl Zeiss Foundation; Graduate School of Excellence Materials Science; Max-Planck Graduate Center; USDOE; USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1884648
Alternate ID(s):
OSTI ID: 1180284
Report Number(s):
LLNL-JRNL-655716; 776054
Journal Information:
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, Journal Name: Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics Journal Issue: 5 Vol. 90; ISSN 1539-3755
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Ground State of Liquid He 4 journal April 1965
The Theory of Complex Spectra journal November 1929
Atomic Theory of the Two-Fluid Model of Liquid Helium journal April 1954
Many-Body Problem with Strong Forces journal June 1955
Jost function for singular potentials journal July 1999
Helium at zero temperature with hard-sphere and other forces journal May 1974
New variational wave function for liquidHe3 journal March 1979
Three-body-correlation effect on the ground-state properties ofHe3andHe3↑ journal March 1981
Shadow wave function for many-boson systems journal September 1988
Euler Monte Carlo calculations for liquid He 4 and He 3 journal November 1995
Shadow wave function for liquid and solid He 3 journal June 1996
Variational study of vacancies in solid4Hewith shadow wave functions journal September 1997
Variational Monte Carlo study of the ground-state properties and vacancy formation energy of solid para-H2using a shadow wave function journal January 2004
Many-body wavefunctions for normal liquid He 3 journal September 2006
Ground State of the Electron Gas by a Stochastic Method journal August 1980
Green's Function Monte Carlo Method for Liquid He 3 journal March 1981
Structure of the Ground State of a Fermion Fluid journal September 1981
Variational Calculations for Solid and Liquid He 4 with a "Shadow" Wave Function journal May 1988
Quantum theory of solid-liquid coexistence and interface inHe4 journal April 1994
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