Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Calcavecchia, Francesco"'
We discuss the methodology of quantum Monte Carlo calculations of the effective mass based on the static self energy, $\Sigma(k,0)$. We then use variational Monte Carlo calculations of $\Sigma(k,0)$ of the homogeneous electron gas at various densitie
Externí odkaz:
http://arxiv.org/abs/2305.02274
Publikováno v:
Adv. Theory Simul. (2021) 2000269
Inspired by the universal approximation theorem and widespread adoption of artificial neural network techniques in a diversity of fields, we propose feed-forward neural networks as a general purpose trial wave function for quantum Monte Carlo simulat
Externí odkaz:
http://arxiv.org/abs/1904.10251
We introduce a novel method that combines the accuracy of Quantum Monte Carlo simulations with ab-initio Molecular Dynamics, in the spirit of Car-Parrinello. This method is then used for investigating the structure of a two-dimensional layer of hydro
Externí odkaz:
http://arxiv.org/abs/1705.04793
We revisit the pressure-induced metal-insulator-transition of solid hydrogen by means of variational quantum Monte Carlo simulations based on the antisymmetric shadow wave function. In order to facilitate studying the electronic structure of large-sc
Externí odkaz:
http://arxiv.org/abs/1604.05804
Publikováno v:
Phys. Rev. E 93, 043321 (2016)
We use the Shadow Wave Function formalism as a convenient model to study the fermion sign problem affecting all projector Quantum Monte Carlo methods in continuum space. We demonstrate that the efficiency of imaginary time projection algorithms decay
Externí odkaz:
http://arxiv.org/abs/1601.01558
Publikováno v:
Phys. Rev. E 90, 053304 (2014)
We present a whole series of novel methods to alleviate the sign problem of the Fermionic Shadow Wave Function in the context of Variational Monte Carlo. The effectiveness of our new techniques is demonstrated on the example of liquid 3He. We found t
Externí odkaz:
http://arxiv.org/abs/1404.6944
Autor:
Kessler, Jan1 (AUTHOR), Calcavecchia, Francesco1 (AUTHOR), Kühne, Thomas D.1,2 (AUTHOR) tkuehne@cp2k.org
Publikováno v:
Advanced Theory & Simulations. Apr2021, Vol. 4 Issue 4, p1-13. 13p.
Autor:
Calcavecchia, Francesco1,2,3 francesco.calcavecchia@gmail.com, Kühne, Thomas D.4,5,6,7 tdkuehne@mail.upb.de
Publikováno v:
Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences. Sep2018, Vol. 73 Issue 9, p845-858. 14p.
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