Research output: Contribution to journal › Article
Path-integral-expanded-ensemble Monte Carlo method in treatment of the sign problem for fermions. / Voznesenskiy, M.A.; Vorontsov-Velyaminov, P.N.; Lyubartsev, A.P.
In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 80, No. 6, 2009, p. 066702_1-10.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Path-integral-expanded-ensemble Monte Carlo method in treatment of the sign problem for fermions
AU - Voznesenskiy, M.A.
AU - Vorontsov-Velyaminov, P.N.
AU - Lyubartsev, A.P.
PY - 2009
Y1 - 2009
N2 - Expanded-ensemble Monte Carlo method with Wang-Landau algorithm was used for calculations of the ratio of partition functions for classes of permutations in the problem of several interacting quantum particles (fermions) in an external field. Simulations for systems consisting of 2 up to 7 interacting particles in harmonic or Coulombic field were performed. The presented approach allows one to carry out calculations for low enough temperatures that makes it possible to extract data for the ground-state energy and low-temperature thermodynamics. © 2009 The American Physical Society.
AB - Expanded-ensemble Monte Carlo method with Wang-Landau algorithm was used for calculations of the ratio of partition functions for classes of permutations in the problem of several interacting quantum particles (fermions) in an external field. Simulations for systems consisting of 2 up to 7 interacting particles in harmonic or Coulombic field were performed. The presented approach allows one to carry out calculations for low enough temperatures that makes it possible to extract data for the ground-state energy and low-temperature thermodynamics. © 2009 The American Physical Society.
KW - Coulombic field
KW - Ensemble-Monte Carlo method
KW - External fields
KW - Ground-state energies
KW - Interacting particles
KW - Low temperatures
KW - Partition functions
KW - Path-integral
KW - Quantum particles
KW - Sign problem
KW - Wang-Landau algorithm
U2 - DOI: 10.1103/PhysRevE.80.066702
DO - DOI: 10.1103/PhysRevE.80.066702
M3 - Article
VL - 80
SP - 066702_1-10
JO - Physical Review E
JF - Physical Review E
SN - 1539-3755
IS - 6
ER -
ID: 5186457