Single- and two-particle finite size effects in interacting lattice systems
Single- and two-particle finite size effects in interacting lattice systems
复制标题
相互作用晶格系统中的单粒子和双粒子有限尺寸效应
DOI:
10.1103/physrevb.106.235106
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发表时间:
2022
影响因子:
3.7
通讯作者:
Gull, Emanuel
中科院分区:
文献类型:
--
作者:
Iskakov, Sergei;Terletska, Hanna;Gull, Emanuel
Simulations of extended quantum systems are typically performed by extrapolating results of a sequence of finite-system-size simulations to the thermodynamic limit. In the quantum Monte Carlo community, twist-averaging was pioneered as an efficient strategy to eliminate one-body finite size effects. In the dynamical mean field community, cluster generalizations of the dynamical mean field theory were formulated to study systems with nonlocal correlations. In this work, we put the twist-averaging and the dynamical cluster approximation variant of the dynamical mean field theory onto equal footing, discuss commonalities and differences, and compare results from both techniques to the standard periodic boundary technique. At the example of Hubbard-type models with local, short-range and Yukawa-like longer range interactions we show that all methods converge to the same limit, but that the convergence speed differs in practice. We show that embedding theories are an effective tool for managing both one-body and two-body finite size effects, in particular if interactions are averaged over twist angles.
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DOI:
--
发表时间:
2022
期刊:
影响因子:
--
作者:
Naratip Nunchot;Dai Nakashima;Ryusuke Ikeda;Tetsuya Yamamoto and Helmut Schiessel;Tokuro Shimokawa
通讯作者:
Tokuro Shimokawa
DOI:
10.1063/1.4922619
发表时间:
2015
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Azadi S
通讯作者:
Azadi S
DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
E. Huang
通讯作者:
E. Huang
影响因子:
3.3
作者:
D. Zgid;E. Gull
通讯作者:
E. Gull
影响因子:
3
作者:
A. Rubtsov;M. Katsnelson;A. Lichtenstein
通讯作者:
A. Lichtenstein