Green's function measurement in the loop and directed loop codes
Hello, I was wondering what is the definition that that the loop and directed loop code return when the options: 'MEASURE[Correlations]' : True, 'MEASURE[Structure Factor]' : True, 'MEASURE[Green Function]' : True, Because I haven't been able to find them and I would like to know what they are and more importantly what prefactors it has or it hasn't. Thank you very much, Francisco Cordobes
Hi Francisco, On Dec 29, 2012, at 11:32 PM, Francisco Cordobés <ghiret@gmail.com> wrote:
Hello,
I was wondering what is the definition that that the loop and directed loop code return when the options:
'MEASURE[Correlations]' : True,
The Sz correlation function for spin models and the density correlation function for bosonic models.
'MEASURE[Structure Factor]' : True,
The Fourier transform of above.
'MEASURE[Green Function]' : True,
The S+ -- S- correlation function for spin models and b^\dag -- b correlation function for bosonic models. Best regards Matthias Troyer
Because I haven't been able to find them and I would like to know what they are and more importantly what prefactors it has or it hasn't.
Thank you very much, Francisco Cordobes
Thanks, In all the cases, the measured quantities are static ones, aren't they? Other than the Green's function(that are not implemented in some codes), am I right assuming that the definition of the observables is the same across the libraries? Best regards, Francisco On 30 December 2012 11:05, Matthias Troyer <troyer@phys.ethz.ch> wrote:
Hi Francisco,
On Dec 29, 2012, at 11:32 PM, Francisco Cordobés <ghiret@gmail.com> wrote:
Hello,
I was wondering what is the definition that that the loop and directed loop code return when the options:
'MEASURE[Correlations]' : True,
The Sz correlation function for spin models and the density correlation function for bosonic models.
'MEASURE[Structure Factor]' : True,
The Fourier transform of above.
'MEASURE[Green Function]' : True,
The S+ -- S- correlation function for spin models and b^\dag -- b correlation function for bosonic models.
Best regards
Matthias Troyer
Because I haven't been able to find them and I would like to know what
they are and more importantly what prefactors it has or it hasn't.
Thank you very much, Francisco Cordobes
Yes to all the questions. On Dec 31, 2012, at 9:05 PM, Francisco Cordobés <ghiret@gmail.com> wrote:
Thanks,
In all the cases, the measured quantities are static ones, aren't they?
Other than the Green's function(that are not implemented in some codes), am I right assuming that the definition of the observables is the same across the libraries?
Best regards,
Francisco
On 30 December 2012 11:05, Matthias Troyer <troyer@phys.ethz.ch> wrote: Hi Francisco,
On Dec 29, 2012, at 11:32 PM, Francisco Cordobés <ghiret@gmail.com> wrote:
Hello,
I was wondering what is the definition that that the loop and directed loop code return when the options:
'MEASURE[Correlations]' : True,
The Sz correlation function for spin models and the density correlation function for bosonic models.
'MEASURE[Structure Factor]' : True,
The Fourier transform of above.
'MEASURE[Green Function]' : True,
The S+ -- S- correlation function for spin models and b^\dag -- b correlation function for bosonic models.
Best regards
Matthias Troyer
Because I haven't been able to find them and I would like to know what they are and more importantly what prefactors it has or it hasn't.
Thank you very much, Francisco Cordobes
participants (2)
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Francisco Cordobés
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Matthias Troyer