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DiagHamInterface.jl

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DiagHamInterface.jl is a Julia package that provides an interface to DiagHam, a suite of exact diagonalization programs for quantum many-body systems.

Installation

The package is not yet registered in the Julia general registry. It can be installed trough the package manager with the following command:

pkg> add git@github.com:ManyBodyLab/DiagHamInterface.jl.git

Code Samples

julia> using DiagHamInterface
julia> open("pseudopotentials.dat", "w") do io
           write(io, "Pseudopotentials = 0.0 1.0 \n")
       end
julia> execute_diagham_script(
           "FQHE/src/Programs/FQHEOnTorus/FQHETorusFermionsTwoBodyGeneric";
           p = 3,        # Number of particles
           l = 9,        # Number of flux quanta (N_phi = p * q = 3 * 3 = 9 for 1/3 filling)
           interaction_file = "pseudopotentials.dat",
           interaction_name = "V1",
       )
julia> A = rand(ComplexF64,100, 100); Ham = A' * A; # Create a random positive definite Hamiltonian
julia> write_to_txt(A, "hamiltonian.txt") # Write Hamiltonian to text file
julia> execute_diagham_script(
           "src/Programs/GenericHamiltonianDiagonalization";
           c = true,
           data_columns = 2,
           use_lapack = true,
           hamiltonian = "hamiltonian.txt",
           o = "spectrum.txt",
           all_eigenstates = true,
           eigenstate_file = "eigenstates.txt",
       )

License

DiagHamInterface.jl is licensed under the APL2 License. By using or interacting with this software in any way, you agree to the license of this software.