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https://github.com/triqs/dft_tools
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52 lines
1.4 KiB
ReStructuredText
52 lines
1.4 KiB
ReStructuredText
.. _welcome:
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Welcome
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=======
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TRIQS is a scientific project that provides a set of tools for the study of
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interacting quantum systems. It allows to quickly implement many-body
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calculations and explore new theoretical and phenomenological ideas within a
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flexible, easy-to-use python environment (à la Matlab).
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Powerful c++ libraries
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----------------------
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.. code-block:: c++
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#include <triqs/arrays.hpp>
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#include <triqs/arrays/linalg/inverse.hpp>
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#include <triqs/arrays/linalg/determinant.hpp>
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using triqs::arrays::array; using triqs::arrays::matrix; using triqs::clef::placeholder;
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int main(){
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placeholder<0> i_;
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placeholder<1> j_;
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matrix<double> A(2,2);
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A(i_,j_) << i_+j_;
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matrix<double> B = inverse(A);
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double C = determinant(A);
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std::cout << "A^(-1) = "<< B << std::endl;
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std::cout << "det(A) = " <<C <<std::endl;
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}
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User-friendly python interface
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------------------------------
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.. plot::
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:include-source:
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:scale: 70
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from pytriqs.gf.local import *
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g = GfReFreq(indices = ['s','d'], window = [-2,2], n_points = 1000)
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g['d','d'] = Omega - 0.3
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g['d','s'] = 0.2
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g['s','d'] = 0.2
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g['s','s'] = inverse( Wilson(1.0) )
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g.invert()
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from pytriqs.plot.mpl_interface import oplot
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oplot( g['d','d'], '-o', RI = 'S', x_window = (-1.8,1.8), name = "Impurity" )
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oplot( g['s','s'], '-x', RI = 'S', x_window = (-1.8,1.8), name = "Bath" )
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