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arXiv · 2610.40354

Two-peak gravitational wave spectra from supercooled two-field phase transitions

Daniel Araújo·João Gonçalves·Danny Marfatia
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Abstract

We study the gravitational wave (GW) spectrum generated by supercooled first-order phase transitions in two-field conformal models. We construct three representative toy models that capture the essential features of these models, derive analytical criteria for the existence of two-step transitions, and show how the two-field dynamics generate a genuine two-peak GW spectrum. We identify regions of parameter space in which two-peak GW spectra are observable at LISA and the Einstein Telescope. By way of illustration, we apply our analysis to a realistic conformal dark SU(3) model.

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Daniel Araújo, João Gonçalves, Danny Marfatia. 2026-10-29. Two-peak gravitational wave spectra from supercooled two-field phase transitions. https://arxiv.org/abs/2610.40354

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