Summary of main features:
Computation of flow equations for n-point functions for pure-gravity and gravity-matter systems
xAct based
FormTracer and DoFun are implemented
Easily adjustable matter content and interactions
Fermions and gamma matrices, including their variations are implemented
Derivative expansions or momentum-dependent projections possible and tested
Dimensionality, regulator, and gauge-dependence can be kept general
Optimized for combination of flexibility and performance
Developed with input from Astrid Eichhorn, Benjamin Knorr, Stefan Lippoldt, Manuel Reichert
Implements the general fluctuation setup summarised in 2007.10353, 2309.10785
For more information, contact Marc Schiffer.
Publications using this code:
1810.02828 [momentum-dependent ghost-gravity and fermion-gravity three-point functions]
1812.08782 [momentum-dependent pure gravity and non-minimally coupled fermion-gravity three-point functions]
1902.06479 [two- and four-gauge vertex minimally coupled to gravity]
1911.10066 [Lorentz-symmetry violating matter couplings with foliation]
2010.00605 [two-gauge vertex and four-fermion coupling minimally coupled to gravity]
2105.04566 [ghost and graviton propagator with full tensor basis with full momentum dependence]
2112.09772 [basis of four-gauge vertices with O(Nv) symmetry, minimally coupled to gravity]
2302.10989 [full function of scalar kinetic term, minimally coupled to gravity]
2405.08862 [extension of 1902.06479 to six-gauge-field couplings]
2506.12001 [CPT-odd matter couplings, minimally coupled to gravity]
Cross checks:
1812.08782: Derivative expansion of all flows checked with independent code by Stefan Lippoldt
1902.06479: Flows partially checked with computations by Astrid Eichhorn
1911.10066: All flows checked with independent code by Alessia Platania
2112.09772: All flows checked with independent code by Jan Kwapisz
2010.00605: Flows partially checked with computations by Astrid Eichhorn and fully checked with independent code by Gustavo de Brito
2105.04566: All flows checked with independent code by Benjamin Knorr
2302.10989: All flows checked with independent codes by Gustavo de Brito and Benjamin Knorr