Topology of dynamical lattice configurations including results from dynamical overlap fermions
Topology of dynamical lattice configurations including results from dynamical overlap fermions
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动态晶格构型的拓扑,包括动态重叠费米子的结果
DOI:
10.1016/j.physletb.2011.12.030
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发表时间:
2012
影响因子:
4.4
通讯作者:
Th. Lippert
中科院分区:
文献类型:
--
作者:
Falk Bruckmann;F. Gruber;N. Cundy;A. Schäfer;Th. Lippert
We investigate how the topological charge density in lattice QCD simulations is affected by violations of chiral symmetry caused by the fermion action. To this end we compare lattice configurations generated with a number of different actions including first configurations generated with exact dynamical overlap quarks. We visualize the topological profiles after mild smearing. In the topological charge correlator we measure the size of the positive core, which is known to shrink to zero extension in the continuum limit. To leading order we find the core size to scale linearly with the lattice spacing with the same coefficient for all actions, even including quenched simulations. In the subleading term the different actions vary over a range of about 10%. Our findings suggest that non-chiral lattice actions at current lattice spacings do not differ much for observables related to topology, both among themselves and compared to overlap fermions.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
N. Cundy
通讯作者:
N. Cundy
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
Iván Horvath;A. Alexandru;Jian;Yu;S. Dong;T. Draper;K. Liu;N. Mathur;S. Tamhankar;H. Thacker
通讯作者:
H. Thacker
影响因子:
5
作者:
C. Bernard;D. Toussaint;L. Levkova;S. Gottlieb;C. DeTar;J. Hetrick;J. Osborn;U. Heller;D. Renner;R. Sugar
通讯作者:
R. Sugar
影响因子:
4.4
作者:
F. Bruckmann;F. Gruber;A. Schafer
通讯作者:
A. Schafer
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
S. Schaefer;T. DeGrand
通讯作者:
T. DeGrand