Function QCM::density_wave

Function Documentation

void QCM::density_wave(const string &name, vector3D<int64_t> &link, complex<double> amplitude, int orb, vector3D<double> Q, double phase, const string &type)

Defines a density wave on the lattice.

Defines a density-wave operator.

Parameters:

  • name – name given to the operator

  • link – bond vector on which the operator is defined

  • amplitude – default amplitude of the operator, that multiplies all matrix elements and its given value

  • orb – index of the first site of the pair (from 1 to nband, the number of lattice orbitals). 0 if all orbitals.

  • Q – wavevector ($\times\pi$) of the density wave

  • phase – constant phase (see general documentation for the formula)

  • type – type of pairing: cdw, X, Z, singlet, dx, dy, dz