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SIGWfast: a python package for the computation of scalar-induced gravitational wave spectra

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arxiv 2209.05296 v1 pith:FO7P6KXA submitted 2022-09-12 astro-ph.CO astro-ph.IMgr-qc

classification astro-ph.COastro-ph.IMgr-qc
keywords pythonsigwfastcodecomputationgravitationalmodulescalar-inducedspectrum
verification ladder T0 review T1 audit T2 compute T3 formal

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SIGWfast is a python code to compute the scalar-induced gravitational wave spectrum from a primordial scalar power spectrum that can be given in analytical or numerical form. SIGWfast was written with the aim of being easy to install and use, and to produce results fast, typically in a matter of a few seconds. To this end the code employs vectorization techniques within python, but there is also the option to compile a C++ module to perform the relevant integrations, further accelerating the computation. The python-only version should run on all platforms that support python 3. The version employing the C++ module is only available for Linux and MacOS systems.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. When the Environment Speaks: Quantum Signatures in Non-Attractor Inflation

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    An open quantum system treatment of curvature perturbations during Ultra-Slow-Roll inflation shows that environmental decoherence erases the interference dip, modifies the growth slope, and induces oscillatory feature...

  2. Testing inflation on all scales: a case study with $\alpha$-attractors

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    A subset of hybrid alpha-attractor inflation models passes all large- and small-scale constraints and predicts scalar-induced gravitational waves detectable by LISA.

  3. Scalar-induced gravitational waves from inflation with symmetry breaking

    astro-ph.CO 2026-07 conditional novelty 5.0 of 10

    Late gauge-field excitation in charged symmetry-breaking inflation pushes enhanced SIGWs into the GHz band, where longitudinal and charge-mixing parameters reshape the spectrum in opposite, distinguishable ways.

  4. Non-Standard Thermal History and Formation of Primordial Black Holes in Einstein-Gauss-Bonnet Gravity

    gr-qc 2025-01 conditional novelty 5.0 of 10

    A tuned Einstein-Gauss-Bonnet inflation model can create primordial black holes from asteroid-sized to tens of solar masses and secondary gravitational waves, with abundances that change dramatically in a stiff post-i...

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