yes, there is no path ...
Julien
On 07/02/2017 09:53, Robertson Esperanza wrote:
the line where I put the file path of the xml file (i.e. 'MODEL_LIBRARY':) ?
On Tue, Feb 7, 2017 at 4:04 PM, Julien <julien.despres@institutoptique.fr mailto:julien.despres@institutoptique.fr> wrote:
I tested your file after modifying this line. It works On 07/02/2017 09:01, Julien wrote:Hi, there is a little problem in your python script; have a look to the line where you include the xml file for the models. Julien - __________________________________ DESPRES Julien Ph.D. student Center for Theoretical Physics Quantum Matter Theory team Ecole Polytechnique 91128 Palaiseau Cedex France, EU Office : 00.10.06 (ground floor) Phone :+33 1 64 33 42 81 <tel:+33%201%2064%2033%2042%2081> Laboratoire Charles Fabry Atom Optics group Institut d'Optique Graduate School 2 Avenue Augustin Fresnel 91127 Palaiseau Cedex France, EU Office : R2.29 (1st floor) Phone: +33 1 64 53 33 49 __________________________________ On 07/02/2017 04:24, Robertson Esperanza wrote:I tried to print the result of taking the local measurement for n_i^2 but it only shows x = [0], y = [0], instead of x = [0 1 2 3 4 5 6 7 8 9], y = [10 scalar values] (since i'm using a 10-site open chain). I attached my python script and mymodels.xml. Thank you for the help. On Mon, Feb 6, 2017 at 4:29 PM, Julien <julien.despres@institutoptique.fr <mailto:julien.despres@institutoptique.fr>> wrote: Hi, you can do it in this way but in your parameter file you have to write : model['MODEL_LIBRARY'] = 'my_own_models.xml' or you can put it wherever you want but in this case : model['MODEL_LIBRARY'] = 'path_to_the_xml_file' Julien On 06/02/2017 09:21, Robertson Esperanza wrote:When creating a new model file, is it necessary that the new model file be saved on the same folder of the default models.xml file? On Mon, Feb 6, 2017 at 3:55 PM, Michele Dolfi <dolfim@phys.ethz.ch <mailto:dolfim@phys.ethz.ch>> wrote: MEASURE_AVERAGE is compute the average among all sites, i.e. a scalar value. MEASURE_LOCAL returns a list of measurements on all sites. Best, Michele -- ETH Zurich Dr.Michele Dolfi Institute for Theoretical Physics HIT G 32.4 Wolfgang-Pauli-Str. 27 8093 Zurich Switzerland dolfim@phys.ethz.ch <mailto:dolfim@phys.ethz.ch> www.itp.phys.ethz.ch <http://www.itp.phys.ethz.ch> +41 44 633 78 56 <tel:+41%2044%20633%2078%2056> phone +41 44 633 11 15 <tel:+41%2044%20633%2011%2015> faxOn 6 Feb 2017, at 08:50, Robertson Esperanza <robbie.esperanza@gmail.com <mailto:robbie.esperanza@gmail.com>> wrote: Oh, I forgot to mention that I'm using mps_optim application. How does the result of MEASURE_AVERAGE differ from MEASURE_LOCAL, if let's say I use "n" for these parameters? Thanks On Mon, Feb 6, 2017 at 3:08 PM, Michele Dolfi <dolfim@phys.ethz.ch <mailto:dolfim@phys.ethz.ch>> wrote: Hello, Could you please be a bit more specific about the application you are running? You are right about the local measurement, but you need MEASURE_LOCAL, since you want to value at each site. Since the n_i^2 operator is not yet defined in the model library, you need to add it yourself. Basically I would do as follow: 1. Copy the file models.xml from ALPS_ROOT/lib/xml/models.xml, where ALPS_ROOT is the root location of your alps installation. 2. Add this definition to your local copy, it defines the n^2 operator <SITEOPERATOR name=“n_squared" site="x"> n(x)*n(x) </SITEOPERATOR> 3. In your input parameters you have now to link to your new model file. MODEL_LIBRARY=“path/to/models.xml” 4. And add your measurement MEASURE_LOCAL[Density^2] = “ n_squared" Hope this helps. Best, Michele -- ETH Zurich Dr.Michele Dolfi Institute for Theoretical Physics HIT G 32.4 Wolfgang-Pauli-Str. 27 8093 Zurich Switzerland dolfim@phys.ethz.ch <mailto:dolfim@phys.ethz.ch> www.itp.phys.ethz.ch <http://www.itp.phys.ethz.ch> +41 44 633 78 56 <tel:+41%2044%20633%2078%2056> phone +41 44 633 11 15 <tel:+41%2044%20633%2011%2015> faxOn 6 Feb 2017, at 07:26, Robertson Esperanza <robbie.esperanza@gmail.com <mailto:robbie.esperanza@gmail.com>> wrote: Hello, I only started studying many-body physics, so there might be gaps in my knowledge. When using the MEASURE_CORRELATION, why does the measurement goes for only site i<j, is it because there will be "blowing up"? Alternatively, to measure for i=j, i think I could use MEASURE_AVERAGE, of let's say (n_i)^2 where n - n_up + n_down. How could I define such measurement, where you use an operator successively? Thank you for replying Robertson Esperanza ---- Comp-phys-alps-users Mailing List for the ALPS Project http://alps.comp-phys.org/ List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users Unsubscribe by writing a mail to comp-phys-alps-users-leave@lists.phys.ethz.ch <mailto:comp-phys-alps-users-leave@lists.phys.ethz.ch>.---- Comp-phys-alps-users Mailing List for the ALPS Project http://alps.comp-phys.org/ List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users Unsubscribe by writing a mail to comp-phys-alps-users-leave@lists.phys.ethz.ch <mailto:comp-phys-alps-users-leave@lists.phys.ethz.ch>. ---- Comp-phys-alps-users Mailing List for the ALPS Project http://alps.comp-phys.org/ List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users Unsubscribe by 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tocomp-phys-alps-users-leave@lists.phys.ethz.ch <mailto:comp-phys-alps-users-leave@lists.phys.ethz.ch>.-- __________________________________ DESPRES Julien Ph.D. student Center for Theoretical Physics Quantum Matter Theory team Ecole Polytechnique 91128 Palaiseau Cedex France, EU Office : 00.10.06 (ground floor) Phone :+33 1 64 33 42 81 <tel:+33%201%2064%2033%2042%2081> Laboratoire Charles Fabry Atom Optics group Institut d'Optique Graduate School 2 Avenue Augustin Fresnel 91127 Palaiseau Cedex France, EU Office : R2.29 (1st floor) Phone:+33 1 64 53 33 49 <tel:+33%201%2064%2053%2033%2049> __________________________________ ---- Comp-phys-alps-users Mailing List for the ALPS Project http://alps.comp-phys.org/ List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users <https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users> Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users <https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users> Unsubscribe by writing a 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tocomp-phys-alps-users-leave@lists.phys.ethz.ch <mailto:comp-phys-alps-users-leave@lists.phys.ethz.ch>.-- __________________________________ DESPRES Julien Ph.D. student Center for Theoretical Physics Quantum Matter Theory team Ecole Polytechnique 91128 Palaiseau Cedex France, EU Office : 00.10.06 (ground floor) Phone :+33 1 64 33 42 81 <tel:+33%201%2064%2033%2042%2081> Laboratoire Charles Fabry Atom Optics group Institut d'Optique Graduate School 2 Avenue Augustin Fresnel 91127 Palaiseau Cedex France, EU Office : R2.29 (1st floor) Phone: +33 1 64 53 33 49 __________________________________ ---- Comp-phys-alps-users Mailing List for the ALPS Project http://alps.comp-phys.org/ List info: https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users <https://lists.phys.ethz.ch//listinfo/comp-phys-alps-users> Archive: https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users <https://lists.phys.ethz.ch//pipermail/comp-phys-alps-users> Unsubscribe by writing a mail to 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