On the convergence of complex Langevin dynamics: the three-dimensional XY model at finite chemical potential
On the convergence of complex Langevin dynamics: the three-dimensional XY model at finite chemical potential
复制标题
复杂朗之万动力学的收敛性:有限化学势下的三维 XY 模型
DOI:
10.1007/jhep08(2010)020
复制
发表时间:
2010
影响因子:
5.4
通讯作者:
Aarts G
中科院分区:
文献类型:
--
作者:
Aarts G
The three-dimensional XY model is studied at finite chemical potential using complex Langevin dynamics. The validity of the approach is probed at small chemical potential using imaginary chemical potential and continuity arguments, and at larger chemical potential by comparison with the world line method. While complex Langevin works for larger β, we find that it fails for smaller β, in the region of the phase diagram corresponding to the disordered phase. Diagnostic tests are developed to identify symptoms correlated with incorrect convergence. We argue that the erroneous behaviour at smaller β is not due to the sign problem, but rather resembles dynamics observed in complex Langevin simulations of simple models with complex noise.
登录
查看更多内容
影响因子:
4.4
作者:
J. Danzer;C. Gattringer;Ľ. Lipták;M. Marinković
通讯作者:
J. Danzer;C. Gattringer;Ľ. Lipták;M. Marinković
影响因子:
4.4
作者:
E. Ilgenfritz
通讯作者:
E. Ilgenfritz
影响因子:
8.6
作者:
K. Splittorff;J. Verbaarschot
通讯作者:
J. Verbaarschot
影响因子:
2.8
作者:
BANKS, T;MYERSON, R;KOGUT, J
通讯作者:
KOGUT, J
影响因子:
8.6
作者:
J. Berges;I. Stamatescu;I. Stamatescu
通讯作者:
I. Stamatescu