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Astrophysics Source Code Library

Making codes discoverable since 1999

Searching for codes credited to 'Werth, Denis'

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[ascl:2412.012] CosmoFlow: A systematic approach to primordial correlators

CosmoFlow automatically computes cosmological correlators. The Cosmological Flow approach is based on computing cosmological correlators by solving differential equations in time governing their time evolution through the entirety of the spacetime during inflation, from their origin as quantum fluctuations in the deep past to the end of inflation. This method takes into account all physical effects at tree-level without approximation. Specifically, CosmoFlow computes the two- and three-point correlators of fields and/or conjugate momenta X a in Fourier space that includes an arbitrary number of degrees of freedom with any propagation speeds, couplings, and time-dependencies.

[ascl:2508.017] SIGWAY: Compute second-order, scalar induced gravitational wave signals

The SIGWAY data analysis pipeline computes second-order, scalar induced gravitational wave signals emitted by curvature perturbations in the early universe. The package solves the Mukhanov-Sasaki equation for single field ultra-slow roll inflationary models and computes the primordial scalar power spectrum Pζ. SIGWAY also computes the second order gravitational wave power spectrum ΩGW from P ζ for reentry during radiation domination or a phase of early matter domination.