[ALPS-users] pairing correlation

[Michele Dolfi]

Hello,

The measurements you are asking for are usually four body operators.
I don't think the base ALPS model library implements them.

For the MPS applications we support more generic measurements, like n-body correlation functions.

Specifically for the pair correlation we have a paper measuring them for some Hubbard ladders.
DOI:https://doi.org/10.1103/PhysRevB.92.195139


Best,
Michele

> On 15 Sep 2017, at 08:59, Chia-Chen Chang <cxc639 at gmail.com> wrote:
> 
> Greetings ALPS users. 
> 
> For benchmark purposes, I'm interested in getting superconducting
> pair correlation functions on small clusters using ALPS' exact 
> diagonalization library. If this is doable, I am wondering if there 
> is a way to define extended operators such as d-wave or p-wave pair 
> field operators? Thanks for your help!
> 
> Chiachen Chang
> 
> 
> 
> 
> 
> 
> 
> 
> 
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