Re: [ALPS-users] Possible Measurements in TEBD code
Hi Joseph, Indeed, the measurements are hardcoded in the present version of the code. You can determine the syntax of the outputs by looking at one of the output *.h5 files. There's too many to list here, so I've attached a screenshot. For the correlation functions which are computed, they are computed for all pairs of sites i and j and returned as a matrix. Hope this helps. -Michael [image: Inline image 1] Hi all,
I'm attempting to look at spin correlation functions, both nearest neighbour and next nearest neighbour, near the centre of an XXZ chain that is undergoing a quench using the TEBD code. As far as I can tell from the documentation, these measurements are hardcoded in to the TEBD code, but the documentation gives no clue on how to access them. In effect, what I would like to know is what can I write into the following line of Python (taken from the second TEBD tutorial): Data = pyalps.load.loadTimeEvolution(pyalps.getResultFiles(prefix='tutorial_2a'), measurements=['Local Magnetization']) instead of 'Local Magnetization', in order to obtain the correlation functions, and also how I could then define which sites the correlation function will be calculated using. I think a question similar to this was asked in January, but there was no answer. Thank you very much in advance! Joseph Prentice
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Michael Wall