triqs_tprf::hubbard_atom::single_particle_greens_function¶
#include <triqs_tprf/hubbard_atom.hpp>
Synopsis
g_iw_t single_particle_greens_function (int nw, double beta, double U)
Single-particle Green’s function of the Hubbard atom at half-filling
Using analytical formulas from Thunstrom et al. PRB 98, 235107 (2018) please cite the paper if you use this function!
(1)¶\[G(i\omega_n) = \frac{1}{i\omega_n - \frac{U^2}{4 i\omega_n}}\]
Parameters¶
- nw number of Matsubara frequencies
- beta inverse temperature
- U Hubbard U interaction parmeter
Returns¶
g single-particle Green’s function of the Hubbard atom \(G(i\omega_n)\)