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RPA

Codebase to calculate bare susceptiblity of a lattice model (using TRIQS), and then perform general random phase approximation (RPA) on it to get instabilities of the model.

Installation

  • Install the triqs_tprf package in a python venv (with default name "triqs"). Note: triqs_tprf does not work on Windows currently.
  • Add the julia repo locally in Package mode.

Usage

  • Create the free Hamiltonian first. This is done using the TightBindingToolkit.jl interface. Some examples are given in ./examples/models.
  • Define the interactions which are to be used for the RPA. This can also done in the same interface, with examples given in ./examples/interactions.
  • Write a parent input file with details of parameters required for the calculation like the inverse temperature, number of k-points, number of matsubara frequencies etc. Refer to ./Inputs for formatting.
  • Run the following command 
    julia --project=../Project.toml --heap-size-hint=4G --input="../Inputs/name_of_input.yml" --run_bare=true