Search found 4 matches

by yuanxun
Tue Sep 20, 2011 9:08 am
Forum: Many-body perturbation theory
Topic: how to switch off the local-field effect in GW calculation?
Replies: 1
Views: 2884

how to switch off the local-field effect in GW calculation?

Dear All,
I want to study how the LF effect affects the band-structure of a material, is there any way to switch off the local-field effect in GW
calculation?
Thanks in advance!

Yuanxun
by yuanxun
Fri Apr 23, 2010 4:44 pm
Forum: Many-body perturbation theory
Topic: anisotropy frequency dependent dielectric function from GW
Replies: 1
Views: 2655

Re: anisotropy frequency dependent dielectric function from

Dear all,
I found parameter in input list:
gw_nqlwl
Mnemonics: GW, Number of Q-points for the Long Wave-Length Limit
This may be helpful.

Yuanxun
by yuanxun
Fri Apr 23, 2010 2:29 pm
Forum: Many-body perturbation theory
Topic: difference:(nbandkss) and (ecuteps Vs. ecutwfn)
Replies: 2
Views: 3163

difference:(nbandkss) and (ecuteps Vs. ecutwfn)

Dear all: Could someone give some explaination about the diferences between nbandkss and nband, also between ecuteps and ecutwfn? From papers,it is not so obvious to find some information about the nbandkss except nband which control the empty band,also it is no so easy to find some information abou...
by yuanxun
Fri Apr 23, 2010 3:46 am
Forum: Many-body perturbation theory
Topic: anisotropy frequency dependent dielectric function from GW
Replies: 1
Views: 2655

anisotropy frequency dependent dielectric function from GW

Deer All, How can I frequency dependent dielectric function from GW calculation?Thanks for suggestion! To get the dielectric, i found there are 9 colomns of chi0(G,G') (following) in the output file?Can someone give some short explanation about it's meaning? Thanks! chi0(G,G') at the 1 th omega 0.00...