Did you set the parameter COMPLEX to true to enable complex valued models?

On Oct 29, 2012, at 12:18 PM, Forwordom mljphy@qq.com wrote:

Hi But I get the error message " Cannot evaluate I" using Sy=1/2/I*(Splus-Sminus) in models.xml and stop finally. What's the matter?' Do I need to edit/modify other items in models.xml or the running python or parameter file ?

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湘潭大学材料与光电物理学院 孟利军 Lijun Meng 邮 箱：mljphy@qq.com 电 话：0731-58298612 地 址：中国、湖南省、湘潭市、湘潭大学 邮 编：411105

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------------------ Original ------------------ From: "comp-phys-alps-users-request"comp-phys-alps-users-request@lists.phys.ethz.ch; Date: Mon, Oct 29, 2012 07:00 PM To: "comp-phys-alps-users"comp-phys-alps-users@lists.phys.ethz.ch; Subject: Comp-phys-alps-users Digest, Vol 79, Issue 6

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Today's Topics:

1. Edit Complex number (=?gb18030?B?Rm9yd29yZG9t?=)
2. Re: Edit Complex number (Matthias Troyer)

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Message: 1 Date: Sun, 28 Oct 2012 21:16:00 +0800 From: "=?gb18030?B?Rm9yd29yZG9t?=" mljphy@qq.com To: "=?gb18030?B?Y29tcC1waHlzLWFscHMtdXNlcnM=?=" comp-phys-alps-users@lists.phys.ethz.ch Subject: [ALPS-users] Edit Complex number Message-ID: tencent_07D14DF17BBD218328D27AF4@qq.com Content-Type: text/plain; charset="gb18030"

Hi alps users and developers I want to simulate a lattice phase transition in external magnetic along x,y,z direction by using dmrg.I have to couple site operator with external magnetic field. But how to edit a complex number in the ALPS models.xml to get site operator Sy=1/2i(Splus-Sminus). Thanks in advance for your reply.