[Pw_forum] GW calculations

[Andrea Marini]

On Thu, 22 Oct 2009, dev sharma wrote:

> I want to calculate the reflection, absorption and EEELS for the YVO4.  I
> earlier tried the epsilon.x but all the guides on this forum suggested me to
> use YAMBO. And for YAMBO , i think i have to produce result with GW
> approximation.

Ok Dev, step by step. Reflection, absorption and EELS can be computed 
without performing any self-energy calculations. Moreover I strongly 
suggest you to

1. post questions and doubts regarding any aspect of Yambo in the 
dedicated forum on the yambo web page (www.yambo-code.org/forum). There 
are several sections covering all features of the code. This is a PW 
mailing list and I am not sure people will be interested in all 
the technicalities of yambo.

2. start using the code on simple systems, trying to reproduce some well 
known properties (like the excitonic optical absorption and/or the 
quasiparticle gap correction).

So, I am looking forward to see on our forum.

Cheers

Andrea


> Please guide,
> Thanks
> With regards,
> Dev
>
> On Thu, Oct 22, 2009 at 9:05 PM, Andrea Marini
> <Andrea.Marini at roma2.infn.it>wrote:
>
>> On Thu, 22 Oct 2009, dev sharma wrote:
>>
>>  hi 2 all,
>>>  Can anybody suggest the any example for GW calculations.
>>>
>>
>> Dear Dev,
>>
>>        which code are you talking about ? Of course there is no unique
>> input file for a GW calculation. It depends on the code and, more
>> importantly, on the system you want to study.
>>
>> So, please, be more precise and tell us something more ;)
>>
>> Cheers
>>
>> Andrea
>>
>> --------------------------------------------------------------------------
>>                               Andrea MARINI
>>
>>       Physics Department, University of Rome "Tor Vergata" (Italy)
>>              - phone: +39-0672594894 - fax: +39-062023507 -
>>
>> - andrea.marini at roma2.infn.it -- http://www.yambo-code.org/people/andrea -
>> _______________________________________________
>> Pw_forum mailing list
>> Pw_forum at pwscf.org
>> http://www.democritos.it/mailman/listinfo/pw_forum
>>
>>
>

--------------------------------------------------------------------------
                                Andrea MARINI

        Physics Department, University of Rome "Tor Vergata" (Italy)
               - phone: +39-0672594894 - fax: +39-062023507 -

- andrea.marini at roma2.infn.it -- http://www.yambo-code.org/people/andrea -