v2.0.0

Installation guide

Please download SpM-2.0.0.tar.gz.
To build SpM, please type the following commands.

tar xzvf SpM-2.0.0.tar.gz
cd SpM-2.0.0
mkdir build
cd build
cmake ..
make

Then, the executable file SpM.out is created in the build/c++/src directory.

Changes

See #12

• Change how to deal with Bosonic systems (how to avoid divergence in the Bosonic kernel K at ω=0)
  • OLD: use ω K instead of K and obtain ρ/ω
  • NEW: use the fermionic kernel Kf = tanh(βω/2) K instead of K and obtain ρ/tanh(βω/2)
  • This change reduces a fluctuation in the high-energy region
• SpM-Pade method
  • arXiv
  • PadeEta specifies the coefficient of Pade term
    • If PadeEta = 0, the conventional SpM AC method is used
• Added utility tools
  • Usage is described in README.md in each sub directory
  • CV tool for tuning hyperparameters
    • tool/cv
  • Test dataset (pair of Spectrum and Green's functions) generator tool
    • tool/exact

Author

Junya Otsuki, Kazuyoshi Yoshimi, Yuichi Motoyama, Hiroshi Shinaoka, Masayuki Ohzeki

Requirement

• LAPACK, BLAS
• FFTW3
• cpplapack (included in this package)

Official page

The official page of the SpM is here.