Hi, Matthias

this is the custom lattice I am using:

-------------------------------------my_lattices.xml----------------------------------------------------------------------

</LATTICE>

</UNITCELL>

</FINITELATTICE>

</LATTICEGRAPH>

</LATTICES>

------------------------------------end of my_lattices.xml-------------------------------------------------------------------

Bo-Nan

2013/3/13 <comp-phys-alps-users-request@lists.phys.ethz.ch>

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Today's Topics:

1. "Kondo Lattice" model in ALPS (Bo-Nan JIANG)
2. question about fermion model (Bo-Nan JIANG)
3. Re: question about fermion model (Matthias Troyer)
4. Re: "Kondo Lattice" model in ALPS (Matthias Troyer)

----------------------------------------------------------------------

Message: 1
Date: Wed, 13 Mar 2013 08:48:42 +0800
From: Bo-Nan JIANG <bonanjiang@gmail.com>
To: "comp-phys-alps-users@lists.phys.ethz.ch"
<comp-phys-alps-users@lists.phys.ethz.ch>
Subject: [ALPS-users] "Kondo Lattice" model in ALPS
Message-ID:
<CADqUQBOJNvgOfDGkTY3GUPbu9sAieKzNEJ3xeuDb67v0vDDvZw@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi, ALPS developers and users

When I did DMRG with the "Kondo lattice" model in ALPS lib, the computer
returned error:
"Site basis for type 2 not found and no default exists."
I do not know whether it is the problem of my code or the ALPS model
itself, so dear developer, is this "Kondo lattice" model in your lib being
tested by DMRG? If it is not, can you test it and tell my whether it works?
(take you five minutes most) Thus, I can make up my mind whether I should
find other way of coding or continue debuging this code which returns
problem. This is really a big help!

Bo-Nan

--
Stay foolish,Stay hungry.
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------------------------------

Message: 2
Date: Wed, 13 Mar 2013 14:39:01 +0800
From: Bo-Nan JIANG <bonanjiang@gmail.com>
To: "comp-phys-alps-users@lists.phys.ethz.ch"
<comp-phys-alps-users@lists.phys.ethz.ch>
Subject: [ALPS-users] question about fermion model
Message-ID:
<CADqUQBMYmVddaDXBaY6Q0YrRkWkP6a5JT4ZqpVK9BSQ0UB2xMw@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi,all
I am always wondering if I defined the quantum numbers of the fermion site
basis in the following way, would there be a negative Ndown number (for
example, with N=0, Nup=1)?

<QUANTUMNUMBER name="N" min="0" max="2"/>
<QUANTUMNUMBER name="Nup" min="0" max="1"/>
<QUANTUMNUMBER name="Ndown" min="N-Nup" max="N-Nup"/>

Bo-Nan

--
Stay foolish,Stay hungry.
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Message: 3
Date: Wed, 13 Mar 2013 08:22:55 +0100
From: Matthias Troyer <troyer@phys.ethz.ch>
To: "comp-phys-alps-users@lists.phys.ethz.ch"
<comp-phys-alps-users@lists.phys.ethz.ch>
Subject: Re: [ALPS-users] question about fermion model
Message-ID: <444AE9EA-405D-4F71-8C9F-E03AB9C50A83@phys.ethz.ch>
Content-Type: text/plain; charset=us-ascii

On Mar 13, 2013, at 7:39, Bo-Nan JIANG <bonanjiang@gmail.com> wrote:

> Hi,all
> I am always wondering if I defined the quantum numbers of the fermion site basis in the following way, would there be a negative Ndown number (for example, with N=0, Nup=1)?
>
> <QUANTUMNUMBER name="N" min="0" max="2"/>
> <QUANTUMNUMBER name="Nup" min="0" max="1"/>
> <QUANTUMNUMBER name="Ndown" min="N-Nup" max="N-Nup"/>

yes

------------------------------

Message: 4
Date: Wed, 13 Mar 2013 10:35:22 +0100
From: Matthias Troyer <troyer@phys.ethz.ch>
To: comp-phys-alps-users@lists.phys.ethz.ch
Subject: Re: [ALPS-users] "Kondo Lattice" model in ALPS
Message-ID: <AA473D55-2023-44D4-9053-7B718856355E@phys.ethz.ch>
Content-Type: text/plain; charset="iso-8859-1"

Which lattice are you using? The error message seems to indicate that your lattice has sites of type 2, for which indeed this model has no basis. The Kondo lattice, as you can see by the model definition, expects two types of sites.

Matthias Troyer

On Mar 13, 2013, at 1:48 AM, Bo-Nan JIANG <bonanjiang@gmail.com> wrote:

> Hi, ALPS developers and users
>
> When I did DMRG with the "Kondo lattice" model in ALPS lib, the computer returned error:
> "Site basis for type 2 not found and no default exists."
> I do not know whether it is the problem of my code or the ALPS model itself, so dear developer, is this "Kondo lattice" model in your lib being tested by DMRG? If it is not, can you test it and tell my whether it works? (take you five minutes most) Thus, I can make up my mind whether I should find other way of coding or continue debuging this code which returns problem. This is really a big help!
>
> Bo-Nan
>
> --
> Stay foolish,Stay hungry.

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End of Comp-phys-alps-users Digest, Vol 84, Issue 11
****************************************************

--
Stay foolish,Stay hungry.