تقرير
Model-independent features of gravitational waves from bubble collisions
| العنوان: | Model-independent features of gravitational waves from bubble collisions |
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| المؤلفون: | Megevand, Ariel, Membiela, Agustin |
| سنة النشر: | 2021 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Phenomenology |
| الوصف: | We study the gravitational radiation produced by the collisions of bubble walls or thin fluid shells in cosmological phase transitions. Using the so-called envelope approximation, we obtain analytically the asymptotic behavior of the gravitational wave spectrum at low and high frequencies for any phase transition model. The complete spectrum can thus be approximated by a simple interpolation between these asymptotes. We verify this approximation with specific examples. We use these results to discuss the dependence of the spectrum on the time and size scales of the source. Comment: 52 pages, 12 figures. v2: we considered two more specific cases (Gaussian and constant rates) and we expanded the discussion on time scales |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.104.123532 |
| URL الوصول: | http://arxiv.org/abs/2108.07034 |
| رقم الأكسشن: | edsarx.2108.07034 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.104.123532 |
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