| Title: | PT2GWFinder : a package for cosmological first-order phase transitions and gravitational waves |
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| Authors: | ID Brdar, Vedran (Author)
ID Finetti, Marco (Author)
ID Matteini, Marco, Institut "Jožef Stefan" (Author)
ID Morais, António P. (Author)
ID Nemevšek, Miha, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0010465526001013?via%3Dihub
 PDF - Presentation file, download (4,10 MB)
MD5: C125172919847DDFB355EF36B169A055
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | The detection of gravitational waves from binary black hole and neutron star mergers by ground-based interferometers, as well as the evidence for a gravitational wave background from pulsar timing array experiments, has marked a new era in astrophysics and cosmology. These experiments also have great potential for discovering new physics through gravitational wave detection. One of the most motivated sources of gravitational waves that can be realized only within a beyond-the-Standard-Model framework is first-order phase transitions. In this work we release PT2GWFinder, a Mathematica package designed to compute phase transition parameters and the gravitational wave power spectrum for an arbitrary scalar theory exhibiting a first-order phase transition, in scenarios where a single scalar acquires a vacuum expectation value. PT2GWFinder performs the phase tracing, computes the bounce profile and action using FindBounce, calculates the relevant temperatures and phase transition parameters, and finally evaluates the gravitational wave spectrum. Additionally, it offers a user-friendly interface with DRalgo, which enables the computation of the dimensionally reduced effective potential in the high-temperature regime. This work includes a user manual and two models that demonstrate the capability and performance of PT2GWFinder. As a supplement, for one of these models we obtain the bounce solution and action analytically in the thin-wall approximation and demonstrate excellent agreement with the numerical approach. |
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| Keywords: | gravitational waves, PT2GWFinder, early universe |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 28.05.2025 |
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| Article acceptance date: | 03.03.2026 |
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| Publication date: | 09.03.2026 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2026 |
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| Number of pages: | str. 1-61 |
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| Numbering: | Vol. 49, [article no.] 110119 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-28461  |
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| UDC: | 539.1 |
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| ISSN on article: | 1879-2944 |
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| DOI: | 10.1016/j.cpc.2026.110119 |
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| COBISS.SI-ID: | 271781635 |
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| Copyright: | © 2026 The Authors. |
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| Note: | Nasl. z nasl. zaslona;
Soavtor iz Slovenije: Miha Nemevšek;
Opis vira z dne 16. 3. 2026;
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| Publication date in DiRROS: | 20.03.2026 |
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| Views: | 230 |
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| Downloads: | 126 |
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