Output data format

Table of Contents

• Single-particle Green's function
• Equal-time single-particle Green's function
• Two-particle Green's function
• Two-time two-particle Green's function

Single-particle Green's function

• Coefficients of Legendre polynomials: G_{ij}(l)
  Path: /G1_LEGENDRE
  The indices are (i, j, l, real[0] or imaginary part[1]). Here, i and j are flavors and l is the index of the polynomials.

• Imaginary-time data
  Path: /gtau/data
  The indices are (t, i, j, real[0] or imaginary part[1]). Here, i and j are flavors and t is the index of imaginary time points. The index t runs from 0 to ntau, which correspond to tau=0 and tau=beta, respectively.

• Matsubara-frequency data
  Path: /gf/data
  The indices are (m, i, j, real[0] or imaginary part[1]). Here, i and j are flavors and m is the index of positive Matsubara frequencies.

Equal-time single-particle Green's function

Path: /EQUAL_TIME_G1
The indices are i and j, where i is the index of the creation operator and j is that of the annihilation operator. See the paper for the definition of the equal-time single-particle Green's function. The creation operator is on the left-hand side in the braket.

Two-particle Green's function

• Mixed-basis data
  Path: /G2_LEGENDRE
  The indices are (i, j, k, l, il, il2, m), where i, j, k, l are flavors and il and i2 are the indices of Legendre polynomials. m is the index of (non-negative) bosonic frequencies.

Two-time two-particle Green's function

Path: /TWO_TIME_G2_LEGENDRE
The indices are (a, b, c, d, il, real[0] or imaginary part[1]). Here, a, b, c, d are flavor index and il is the index of Legendre polynomials. The definition of the correlation function is given in Eq. (27) of our paper. The convention of the Legendre basis transformation is the same as for the single-particle Green's function.