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Meaning of parameter "SPINFLIP"
by backes＠th.physik.uni-frankfurt.de 20 May '15

20 May '15

Dear ALPS developers, I was wondering about the meaning of the parameter SPINFLIP for the CT-HYB impurity solver. The documentation mentions: SPINFLIP={0,1} specifies whether to perform spin flip updates. In such an update a segment is moved from one orbital to another, if the latter is empty. Does this correspond to a global move that flips all spins, i.e. for enforcing a paramagnetic solution or does it correspond to the part of the rotationally invariant Hund's coupling which is called Spin-Flip term? If it's the first one, are there any plans that Spin-Flip/Pair-Hopping terms can be treated within the CT-HYB solver in the near future? best regards, Steffen

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Equivalence of models
by Alexander Herzog 16 May '15

16 May '15

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Help installing
by Ian R George 09 May '15

09 May '15

Hello, I am a physics student in the US who has developed an interest in strongly correlated electrons as well as C++, and would love to try what ALPS has to offer. Unfortunately, I have a rather dumb question to ask regarding installation. Where should I use make when building it from source? I use a Ubuntu system, so I can't do it via binary source. Thank you.

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Unable to run the hybridization tutorial scripts; cthyb and boost.mpi not found
by Leo Fang 07 May '15

07 May '15

Hello, Recently I found that an implementation of the continuous-time QMC hybridization scheme (CT-HYB) has been included in the ALPS library and I'd like to learn how it works, so I installed the binary packages of alps 2.2.0b3, vistrails 2.1.2 and alps-vistrails-2.2.0b3 on Mac OS X 10.10.3. I've tested a few tutorials to make sure the installation was complete. However, tutorial1.py in the hybridization tutorial told me that it couldn't find the cthyb module, and tutorial2~4 told me it couldn't find both boost.mpi and cthyb. Is it because the v2.2.0b3 binary package does not have them compiled and I have to rebuild the library from the source code? (I don't have MPI or Open MPI installed on my Mac, by the way. Does it matter?) Moreover, I tried to follow the instruction in doc/hybdoc.pdf to run hybridization from scratch, but there's a file "delta.dat" containing hybridization functions which I don't know how to produce. Did I miss something in the tutorial? Thank you. ps. I'm aware that CT-HYB is implemented as an impurity solver for the DMFT applications. But my project does not need DMFT calculations and I intend to simply use hybridization as a stand-alone module. Sincerely, Leo (Fang Yao-Lung) Duke Physics

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Re: [ALPS-users] building alps from source (Synge Todo)
by Tadeusz Wasiutyński 04 May '15

04 May '15

Thank you very much Synge, now it goes smoothely. I patched as you suggested. I forgot to mention that I am using gcc 4.9.2-6 and boost 1_54_0. Best wishes tadeusz 2015-05-01 12:00 GMT+02:00 <comp-phys-alps-users-request(a)lists.phys.ethz.ch> : > Send Comp-phys-alps-users mailing list submissions to > comp-phys-alps-users(a)lists.phys.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.phys.ethz.ch/listinfo/comp-phys-alps-users > or, via email, send a message with subject or body 'help' to > comp-phys-alps-users-request(a)lists.phys.ethz.ch > > You can reach the person managing the list at > comp-phys-alps-users-owner(a)lists.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. Re: building alps from source (Synge Todo) > > > ---------------------------------------------------------------------- > Message: 1 > Date: Thu, 30 Apr 2015 19:53:12 +0900 > From: Synge Todo <wistaria(a)comp-phys.org> > To: comp-phys-alps-users(a)lists.phys.ethz.ch > Subject: Re: [ALPS-users] building alps from source > Message-ID: <B8D338DA-8CC7-4C6A-9E25-C19CACE3C427(a)comp-phys.org> > Content-Type: text/plain; charset=utf-8 > > This looks similar as the problem reported at > https://svn.boost.org/trac/boost/ticket/8973 . > You can solve the problem by using a newer version of Boost, or apply the > patch provided at https://svn.boost.org/trac/boost/changeset/84950 to the > Boost source code. > > Best, > Synge > > > > On Apr 29, 2015, at 19:06, Tadeusz Wasiuty?ski < > tadeusz.wasiutynski(a)ifj.edu.pl> wrote: > > > > while cmake looks OK I meet problem during make command: > > > ********************************************************************************************************************************* > > [ 20%] Building CXX object > src/boost/CMakeFiles/boost.dir/home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/once.cpp.o > > In file included from > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic.hpp:12:0, > > from > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/pthread/once_atomic.hpp:20, > > from > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/once.hpp:20, > > from > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/./once_atomic.cpp:9, > > from > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/once.cpp:8: > > > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:16: > error: ?uintptr_t? was not declared in this scope > > typedef atomic<uintptr_t> atomic_uintptr_t; > > ^ > > > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:25: > error: template argument 1 is invalid > > typedef atomic<uintptr_t> atomic_uintptr_t; > > ^ > > > /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:43: > error: invalid type in declaration before ?;? token > > typedef atomic<uintptr_t> atomic_uintptr_t; > > > ********************************************************************************************************************************** > > is it connected with my compiler or alps source? In the past on the > other machine compilation went smooth. > > Regards > > -- > > Tadeusz Wasiuty?ski > > > > End of Comp-phys-alps-users Digest, Vol 110, Issue 1 > **************************************************** > -- Tadeusz Wasiutyński

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Warning: No parameter set has been found. No XML files will be generated
by Alexander Herzog 02 May '15

02 May '15

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Cannot calculate boundary crossing if neither vertex is in the original cell
by Alexander Herzog 02 May '15

02 May '15

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building alps from source
by Tadeusz Wasiutyński 30 Apr '15

30 Apr '15

while cmake looks OK I meet problem during make command: ********************************************************************************************************************************* [ 20%] Building CXX object src/boost/CMakeFiles/boost.dir/home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/once.cpp.o In file included from /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic.hpp:12:0, from /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/pthread/once_atomic.hpp:20, from /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/thread/once.hpp:20, from /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/./once_atomic.cpp:9, from /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/libs/thread/src/pthread/once.cpp:8: /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:16: error: ‘uintptr_t’ was not declared in this scope typedef atomic<uintptr_t> atomic_uintptr_t; ^ /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:25: error: template argument 1 is invalid typedef atomic<uintptr_t> atomic_uintptr_t; ^ /home/twasiutynsk/alps-2.2.b3-r7462-src-with-boost/boost/boost/atomic/atomic.hpp:202:43: error: invalid type in declaration before ‘;’ token typedef atomic<uintptr_t> atomic_uintptr_t; ********************************************************************************************************************************** is it connected with my compiler or alps source? In the past on the other machine compilation went smooth. Regards -- Tadeusz Wasiutyński

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model not implemented in file factory.C
by Alexander Herzog 18 Apr '15

18 Apr '15

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Problems with ALPS fulldiag measurement code and suggested fix
by Pikulski Marek 14 Apr '15

14 Apr '15

Dear ALPS Users and Developers, I have been observing some unexpected behavior when using translation symmetry with the ALPS fulldiag application. The detailed description (PDF), as well as a simple example and the output in question (.zip), are attached. More recently, I have discovered another issue: If I consider a single spin-1/2 in the Sz basis subjected to magnetic field pointing along the y-direction, the eigenvectors and energies are calculated correctly but the expectation value of e.g. the identity-operator is zero. I have tracked down the problem to a surplus complex conjugation in the calculation of the scalar product of complex vectors and the attached patch seems to fix it. Moreover, the originally encountered problem (cf. first paragraph) seems to be no more than a different manifestation of the same bug. I hope this information will be useful. Best regards, Marek Pikulski Laboratory for Solid State Physics ETH Zurich

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