Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866909589122842624 |
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| author | Lewicki, Marek Merchand, Marco Sagunski, Laura Schicho, Philipp Schmitt, Daniel |
| author_facet | Lewicki, Marek Merchand, Marco Sagunski, Laura Schicho, Philipp Schmitt, Daniel |
| contents | Different computational techniques for cosmological phase transition parameters can impact the Gravitational Wave (GW) spectra predicted in a given particle physics model. To scrutinize the importance of this effect, we perform large-scale parameter scans of the dynamical real-singlet extended Standard Model using three perturbative approximations for the effective potential: the $\overline{\rm MS}$ and on-shell schemes at leading order, and three-dimensional thermal effective theory (3D EFT) at next-to-leading order. While predictions of GW amplitudes are typically unreliable in the absence of higher-order corrections, we show that the reconstructed model parameter spaces are robust up to a few percent in uncertainty. While 3D EFT is accurate from one loop order, theoretical uncertainties of reconstructed model parameters, using four-dimensional standard techniques, remain dominant over the experimental ones even for signals merely strong enough to claim a detection by LISA. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_03769 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions Lewicki, Marek Merchand, Marco Sagunski, Laura Schicho, Philipp Schmitt, Daniel High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Different computational techniques for cosmological phase transition parameters can impact the Gravitational Wave (GW) spectra predicted in a given particle physics model. To scrutinize the importance of this effect, we perform large-scale parameter scans of the dynamical real-singlet extended Standard Model using three perturbative approximations for the effective potential: the $\overline{\rm MS}$ and on-shell schemes at leading order, and three-dimensional thermal effective theory (3D EFT) at next-to-leading order. While predictions of GW amplitudes are typically unreliable in the absence of higher-order corrections, we show that the reconstructed model parameter spaces are robust up to a few percent in uncertainty. While 3D EFT is accurate from one loop order, theoretical uncertainties of reconstructed model parameters, using four-dimensional standard techniques, remain dominant over the experimental ones even for signals merely strong enough to claim a detection by LISA. |
| title | Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2403.03769 |