TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCodeb.24
TI  - MatsubaraFunctions.jl: An equilibrium Green's function library in the Julia programming language
PY  - 2024/01/11
UR  - https://scipost.org/SciPostPhysCodeb.24
JF  - SciPost Physics Codebases
JA  - SciPost Phys. Codebases
SP  - 24
A1  - Kiese, Dominik
AU  - Ge, Anxiang
AU  - Ritz, Nepomuk
AU  - von Delft, Jan
AU  - Wentzell, Nils
AB  - The Matsubara Green's function formalism stands as a powerful technique for computing the thermodynamic characteristics of interacting quantum many-particle systems at finite temperatures. In this manuscript, our focus centers on introducing MatsubaraFunctions.jl, a Julia library that implements data structures for generalized n-point Green's functions on Matsubara frequency grids. The package's architecture prioritizes user-friendliness without compromising the development of efficient solvers for quantum field theories in equilibrium. Following a comprehensive introduction of the fundamental types, we delve into a thorough examination of key facets of the interface. This encompasses avenues for accessing Green's functions, techniques for extrapolation and interpolation, as well as the incorporation of symmetries and a variety of parallelization strategies. Examples of increasing complexity serve to demonstrate the practical utility of the library, supplemented by discussions on strategies for sidestepping impediments to optimal performance.
ER  -

@Article{10.21468/SciPostPhysCodeb.24,
	title={{MatsubaraFunctions.jl: An equilibrium Green's function library in the Julia programming language}},
	author={Dominik Kiese and Anxiang Ge and Nepomuk Ritz and Jan von Delft and Nils Wentzell},
	journal={SciPost Phys. Codebases},
	pages={24},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCodeb.24},
	url={https://scipost.org/10.21468/SciPostPhysCodeb.24},
}

@Article{10.21468/SciPostPhysCodeb.24-r0.1,
	title={{Codebase release 0.1 for MatsubaraFunctions.jl}},
	author={Dominik Kiese and Anxiang Ge and Nepomuk Ritz and Jan von Delft and Nils Wentzell},
	journal={SciPost Phys. Codebases},
	pages={24-r0.1},
	year={2024},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCodeb.24-r0.1},
	url={https://scipost.org/10.21468/SciPostPhysCodeb.24-r0.1},
}