QCD Crossover Transfer Functions for Scalar-Induced Gravitational Waves in the PTA Band

arXiv:2609.29078 · astro-ph.CO, gr-qc, hep-th · Submitted 2026-09-24 · Read on arXiv

astro-ph.CO, gr-qc, hep-th

Submitted: 2026-09-24

Updated: 2026-09-24

Code: https://github.com/gfranciolini/QCD-SIGW

Terminology

• Non-Gaussianity — 10× in this paper · explained in 2 episodes
• Standard Model — 8× in this paper
• Abundance — 7× in this paper · explained in 1 episode
• Primordial non-Gaussianity — 6× in this paper · explained in 2 episodes
• Accuracy — 5× in this paper · explained in 1 episode
• Core — 3× in this paper · explained in 2 episodes
• Degeneracy — 3× in this paper · explained in 3 episodes
• pulsar timing arrays — 2× in this paper · explained in 2 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Decoupling — 1× in this paper · explained in 2 episodes
• Inverse Problem — 1× in this paper · explained in 2 episodes
• No-Go Theorem — 1× in this paper · explained in 2 episodes
• Phase Transitions — 1× in this paper · explained in 2 episodes
• Symmetry Breaking — 1× in this paper · explained in 3 episodes
• Systematic Bias — 1× in this paper · explained in 3 episodes
• Trace — 1× in this paper · explained in 2 episodes

Sources

• The second data release from the European Pulsar Timing Array: IV. Implications for massive black holes, dark matter and the early Universe
• The Parkes Pulsar Timing Array Third Data Release
• The MeerKAT Pulsar Timing Array: The first search for gravitational waves with the MeerKAT radio telescope
• Primordial gravitational waves in the nano-Hertz regime and PTA data -- towards solving the GW inverse problem
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• Cosmological Background Interpretation of Pulsar Timing Array Data
• What is the source of the PTA GW signal?
• Ultra-low frequency gravitational waves from cosmological and astrophysical processes
• General Relativistic Dynamics of Irrotational Dust: Cosmological Implications
• Second-Order Cosmological Perturbations from Inflation
• CMB polarization from secondary vector and tensor modes
• The cosmological gravitational wave background from primordial density perturbations
• Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
• Scalar induced gravitational waves review
• On Effective Degrees of Freedom in the Early Universe
• Primordial gravitational waves, precisely: The role of thermodynamics in the Standard Model
• Standard Model thermodynamics across the electroweak crossover
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Chiral crossover in QCD at zero and non-zero chemical potentials
• The QCD crossover at finite chemical potential from lattice simulations

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