Hi Dears
Thanks a  lot. I have achieved the ground state energy  as follow:
SWEEP=8, L=30,MAXSTATES=100, E0= -0.437045191.
SWEEP=8, L=50,MAXSTATES=140, E0= -0.43944220.
SWEEP=4, L=100,MAXSTATES=100, E0= -0.44127739.
SWEEP=4, L=100,MAXSTATES=300, E0= -0.44127739.
SWEEP=4, L=300,MAXSTATES=100, E0= -0.44127739.
The E0= -0.44127739 is the best enegy that i achieve and when i change the sweep&M&L,the energy doesn't change.I can't improve the result ,also i wrote the model & lattice, but have not changed any thing.
Thanks.





On Fri, Dec 5, 2008 at 6:00 AM, <comp-phys-alps-users-request@phys.ethz.ch> wrote:
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Today's Topics:

  1. DMRG For Antiferromagnetic Spin one half chain (zhian asadzadeh)
  2. Re: DMRG For Antiferromagnetic Spin one half chain
     (Matthias Troyer)
  3. Re: DMRG For Antiferromagnetic Spin one half chain
     (Adrian E. Feiguin)


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

Message: 1
Date: Thu, 4 Dec 2008 22:35:51 +0330
From: "zhian asadzadeh" <zhian.asadzadeh@gmail.com>
Subject: [ALPS-users] DMRG For Antiferromagnetic Spin one half chain
To: comp-phys-alps-users@phys.ethz.ch
Message-ID:
       <89e5d6760812041105w5556998du756af1c79c8fb32b@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi Dear
Thanks for your consideration.I run the program for different sizes and have
increased it to 500 sites.For up to 100 site the result converges but it is
not the result that should it be (*0.443147*),the result  that have achieved
earlier from Bethe method and in the work of Mr.white that tests the DMRG
for showing the powerful of this code.
Thanks
zhian


On Wed, Dec 3, 2008 at 2:30 PM,
<comp-phys-alps-users-request@phys.ethz.ch>wrote:

> Send Comp-phys-alps-users mailing list submissions to
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>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Comp-phys-alps-users digest..."
>
>
> Today's Topics:
>
>   1. DMRG for antiferromagnetic spin one half chain (zhian asadzadeh)
>   2. Re: DMRG for antiferromagnetic spin one half chain
>      (Matthias Troyer)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 2 Dec 2008 16:43:12 +0330
> From: "zhian asadzadeh" <zhian.asadzadeh@gmail.com>
> Subject: [ALPS-users] DMRG for antiferromagnetic spin one half chain
> To: comp-phys-alps-users@phys.ethz.ch
> Message-ID:
>        <89e5d6760812020513q686feb0bge51a267945421f2@mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi ADRIAN
> I run DMRG program for  antiferromagnetic S=1/2 chain,but the result that i
> achieve for groun state energy  doesn't concur with the result  that has
> achieved from bethe ansats method (0.443147).
> I have changed m&sweep& number of sites(to 1000 site) but my result just 2
> digit concur with 0.443147.
> I don't know what must i do.
> I will be very appreciate  if you can guide me.
>
> Thanks
> zhian
> -------------- next part --------------
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> https://webmail.phys.ethz.ch/mailman/private/comp-phys-alps-users/attachments/20081202/0493cedb/attachment-0001.htm
>
> ------------------------------
>
> Message: 2
> Date: Tue, 2 Dec 2008 08:33:57 -0500
> From: Matthias Troyer <troyer@phys.ethz.ch>
> Subject: Re: [ALPS-users] DMRG for antiferromagnetic spin one half
>        chain
> To: comp-phys-alps-users@phys.ethz.ch
> Message-ID: <67427F34-DE94-4D41-A49C-A3BC801E4BA7@phys.ethz.ch>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> What is the system size? There are finite size corrections. As you
> increase the size it should converge
>
> Matthias
>
> On Dec 2, 2008, at 8:13 AM, zhian asadzadeh wrote:
>
> > Hi ADRIAN
> > I run DMRG program for  antiferromagnetic S=1/2 chain,but the result
> > that i achieve for groun state energy  doesn't concur with the
> > result  that has achieved from bethe ansats method (0.443147).
> > I have changed m&sweep& number of sites(to 1000 site) but my result
> > just 2 digit concur with 0.443147.
> > I don't know what must i do.
> > I will be very appreciate  if you can guide me.
> >
> > Thanks
> > zhian
>
>
>
> End of Comp-phys-alps-users Digest, Vol 33, Issue 1
> ***************************************************
>
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------------------------------

Message: 2
Date: Thu, 4 Dec 2008 22:29:05 +0100
From: Matthias Troyer <troyer@phys.ethz.ch>
Subject: Re: [ALPS-users] DMRG For Antiferromagnetic Spin one half
       chain
To: comp-phys-alps-users@phys.ethz.ch
Message-ID: <F91F718B-C18F-432C-90CA-5A52B0C0841F@phys.ethz.ch>
Content-Type: text/plain; charset="us-ascii"

How many states do you keep?

On Dec 4, 2008, at 8:05 PM, zhian asadzadeh wrote:

> Hi Dear
> Thanks for your consideration.I run the program for different sizes
> and have increased it to 500 sites.For up to 100 site the result
> converges but it is  not the result that should it be (0.443147),the
> result  that have achieved earlier from Bethe method and in the work
> of Mr.white that tests the DMRG for showing the powerful of this code.
> Thanks
> zhian
>
>
> On Wed, Dec 3, 2008 at 2:30 PM, <comp-phys-alps-users-request@phys.ethz.ch
> > wrote:
> Send Comp-phys-alps-users mailing list submissions to
>        comp-phys-alps-users@phys.ethz.ch
>
> To subscribe or unsubscribe via the World Wide Web, visit
>        https://webmail.phys.ethz.ch/mailman/listinfo/comp-phys-alps-users
> or, via email, send a message with subject or body 'help' to
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>
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>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Comp-phys-alps-users digest..."
>
>
> Today's Topics:
>
>   1. DMRG for antiferromagnetic spin one half chain (zhian asadzadeh)
>   2. Re: DMRG for antiferromagnetic spin one half chain
>      (Matthias Troyer)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 2 Dec 2008 16:43:12 +0330
> From: "zhian asadzadeh" <zhian.asadzadeh@gmail.com>
> Subject: [ALPS-users] DMRG for antiferromagnetic spin one half chain
> To: comp-phys-alps-users@phys.ethz.ch
> Message-ID:
>        <89e5d6760812020513q686feb0bge51a267945421f2@mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi ADRIAN
> I run DMRG program for  antiferromagnetic S=1/2 chain,but the result
> that i
> achieve for groun state energy  doesn't concur with the result  that
> has
> achieved from bethe ansats method (0.443147).
> I have changed m&sweep& number of sites(to 1000 site) but my result
> just 2
> digit concur with 0.443147.
> I don't know what must i do.
> I will be very appreciate  if you can guide me.
>
> Thanks
> zhian
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: https://webmail.phys.ethz.ch/mailman/private/comp-phys-alps-users/attachments/20081202/0493cedb/attachment-0001.htm
>
> ------------------------------
>
> Message: 2
> Date: Tue, 2 Dec 2008 08:33:57 -0500
> From: Matthias Troyer <troyer@phys.ethz.ch>
> Subject: Re: [ALPS-users] DMRG for antiferromagnetic spin one half
>        chain
> To: comp-phys-alps-users@phys.ethz.ch
> Message-ID: <67427F34-DE94-4D41-A49C-A3BC801E4BA7@phys.ethz.ch>
> Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>
> What is the system size? There are finite size corrections. As you
> increase the size it should converge
>
> Matthias
>
> On Dec 2, 2008, at 8:13 AM, zhian asadzadeh wrote:
>
> > Hi ADRIAN
> > I run DMRG program for  antiferromagnetic S=1/2 chain,but the result
> > that i achieve for groun state energy  doesn't concur with the
> > result  that has achieved from bethe ansats method (0.443147).
> > I have changed m&sweep& number of sites(to 1000 site) but my result
> > just 2 digit concur with 0.443147.
> > I don't know what must i do.
> > I will be very appreciate  if you can guide me.
> >
> > Thanks
> > zhian
>
>
>
> End of Comp-phys-alps-users Digest, Vol 33, Issue 1
> ***************************************************
>

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

Message: 3
Date: Thu, 04 Dec 2008 14:32:09 -0800
From: "Adrian E. Feiguin" <afeiguin@kitp.ucsb.edu>
Subject: Re: [ALPS-users] DMRG For Antiferromagnetic Spin one half
       chain
To: comp-phys-alps-users@phys.ethz.ch
Message-ID: <49385A69.90908@kitp.ucsb.edu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hi all,

Sorry for the radio silence, but I've been travelling.
As Matthais said, it would be useful if you could send us some numbers,
for different sizes, and number of DMRG states.

Saludos,
<ADRIAN>

Matthias Troyer wrote:

> How many states do you keep?
>
> On Dec 4, 2008, at 8:05 PM, zhian asadzadeh wrote:
>
>> Hi Dear
>> Thanks for your consideration.I run the program for different sizes
>> and have increased it to 500 sites.For up to 100 site the result
>> converges but it is  not the result that should it be
>> (*0.443147*),the result  that have achieved earlier from Bethe method
>> and in the work of Mr.white that tests the DMRG for showing the
>> powerful of this code.
>> Thanks
>> zhian
>>
>>
>> On Wed, Dec 3, 2008 at 2:30 PM,
>> <comp-phys-alps-users-request@phys.ethz.ch
>> <mailto:comp-phys-alps-users-request@phys.ethz.ch>> wrote:
>>
>>     Send Comp-phys-alps-users mailing list submissions to
>>            comp-phys-alps-users@phys.ethz.ch
>>     <mailto:comp-phys-alps-users@phys.ethz.ch>
>>
>>     To subscribe or unsubscribe via the World Wide Web, visit
>>
>>      https://webmail.phys.ethz.ch/mailman/listinfo/comp-phys-alps-users
>>     or, via email, send a message with subject or body 'help' to
>>            comp-phys-alps-users-request@phys.ethz.ch
>>     <mailto:comp-phys-alps-users-request@phys.ethz.ch>
>>
>>     You can reach the person managing the list at
>>            comp-phys-alps-users-owner@phys.ethz.ch
>>     <mailto:comp-phys-alps-users-owner@phys.ethz.ch>
>>
>>     When replying, please edit your Subject line so it is more specific
>>     than "Re: Contents of Comp-phys-alps-users digest..."
>>
>>
>>     Today's Topics:
>>
>>       1. DMRG for antiferromagnetic spin one half chain (zhian asadzadeh)
>>       2. Re: DMRG for antiferromagnetic spin one half chain
>>          (Matthias Troyer)
>>
>>
>>     ----------------------------------------------------------------------
>>
>>     Message: 1
>>     Date: Tue, 2 Dec 2008 16:43:12 +0330
>>     From: "zhian asadzadeh" <zhian.asadzadeh@gmail.com
>>     <mailto:zhian.asadzadeh@gmail.com>>
>>     Subject: [ALPS-users] DMRG for antiferromagnetic spin one half chain
>>     To: comp-phys-alps-users@phys.ethz.ch
>>     <mailto:comp-phys-alps-users@phys.ethz.ch>
>>     Message-ID:
>>
>>      <89e5d6760812020513q686feb0bge51a267945421f2@mail.gmail.com
>>     <mailto:89e5d6760812020513q686feb0bge51a267945421f2@mail.gmail.com>>
>>     Content-Type: text/plain; charset="iso-8859-1"
>>
>>     Hi ADRIAN
>>     I run DMRG program for  antiferromagnetic S=1/2 chain,but the
>>     result that i
>>     achieve for groun state energy  doesn't concur with the result
>>      that has
>>     achieved from bethe ansats method (0.443147).
>>     I have changed m&sweep& number of sites(to 1000 site) but my
>>     result just 2
>>     digit concur with 0.443147.
>>     I don't know what must i do.
>>     I will be very appreciate  if you can guide me.
>>
>>     Thanks
>>     zhian
>>     -------------- next part --------------
>>     An HTML attachment was scrubbed...
>>     URL:
>>     https://webmail.phys.ethz.ch/mailman/private/comp-phys-alps-users/attachments/20081202/0493cedb/attachment-0001.htm
>>
>>     ------------------------------
>>
>>     Message: 2
>>     Date: Tue, 2 Dec 2008 08:33:57 -0500
>>     From: Matthias Troyer <troyer@phys.ethz.ch
>>     <mailto:troyer@phys.ethz.ch>>
>>     Subject: Re: [ALPS-users] DMRG for antiferromagnetic spin one half
>>            chain
>>     To: comp-phys-alps-users@phys.ethz.ch
>>     <mailto:comp-phys-alps-users@phys.ethz.ch>
>>     Message-ID: <67427F34-DE94-4D41-A49C-A3BC801E4BA7@phys.ethz.ch
>>     <mailto:67427F34-DE94-4D41-A49C-A3BC801E4BA7@phys.ethz.ch>>
>>     Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes
>>
>>     What is the system size? There are finite size corrections. As you
>>     increase the size it should converge
>>
>>     Matthias
>>
>>     On Dec 2, 2008, at 8:13 AM, zhian asadzadeh wrote:
>>
>>     > Hi ADRIAN
>>     > I run DMRG program for  antiferromagnetic S=1/2 chain,but the
>>     result
>>     > that i achieve for groun state energy  doesn't concur with the
>>     > result  that has achieved from bethe ansats method (0.443147).
>>     > I have changed m&sweep& number of sites(to 1000 site) but my result
>>     > just 2 digit concur with 0.443147.
>>     > I don't know what must i do.
>>     > I will be very appreciate  if you can guide me.
>>     >
>>     > Thanks
>>     > zhian
>>
>>
>>
>>     End of Comp-phys-alps-users Digest, Vol 33, Issue 1
>>     ***************************************************
>>
>>
>



End of Comp-phys-alps-users Digest, Vol 33, Issue 3
***************************************************