Imprint of a scalar era on the primordial spectrum of gravitational waves
Upcoming searches for the stochastic background of inflationary gravitational waves (GWs) offer the exciting possibility to probe the evolution of our Universe prior to big bang nucleosynthesis. In this spirit, we explore the sensitivity of future GW observations to a broad class of beyond-the-stand...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2019-08-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.1.013010 |
| _version_ | 1827286353340006400 |
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| author | Francesco D'Eramo Kai Schmitz |
| author_facet | Francesco D'Eramo Kai Schmitz |
| author_sort | Francesco D'Eramo |
| collection | DOAJ |
| description | Upcoming searches for the stochastic background of inflationary gravitational waves (GWs) offer the exciting possibility to probe the evolution of our Universe prior to big bang nucleosynthesis. In this spirit, we explore the sensitivity of future GW observations to a broad class of beyond-the-standard-model scenarios that lead to a nonstandard expansion history. We consider a new scalar field whose coherent oscillations dominate the energy density of the Universe at very early times, resulting in a scalar era prior to the standard radiation-dominated era. The imprint of this scalar era on the primordial GW spectrum provides a means to probe well-motivated yet elusive models of particle physics. Our work highlights the complementarity of future GW observatories across the entire range of accessible frequencies. |
| first_indexed | 2024-04-24T10:29:57Z |
| format | Article |
| id | doaj.art-255ae26fbcd845fba796488ef6c59145 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:29:57Z |
| publishDate | 2019-08-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-255ae26fbcd845fba796488ef6c591452024-04-12T16:45:23ZengAmerican Physical SocietyPhysical Review Research2643-15642019-08-011101301010.1103/PhysRevResearch.1.013010Imprint of a scalar era on the primordial spectrum of gravitational wavesFrancesco D'EramoKai SchmitzUpcoming searches for the stochastic background of inflationary gravitational waves (GWs) offer the exciting possibility to probe the evolution of our Universe prior to big bang nucleosynthesis. In this spirit, we explore the sensitivity of future GW observations to a broad class of beyond-the-standard-model scenarios that lead to a nonstandard expansion history. We consider a new scalar field whose coherent oscillations dominate the energy density of the Universe at very early times, resulting in a scalar era prior to the standard radiation-dominated era. The imprint of this scalar era on the primordial GW spectrum provides a means to probe well-motivated yet elusive models of particle physics. Our work highlights the complementarity of future GW observatories across the entire range of accessible frequencies.http://doi.org/10.1103/PhysRevResearch.1.013010 |
| spellingShingle | Francesco D'Eramo Kai Schmitz Imprint of a scalar era on the primordial spectrum of gravitational waves Physical Review Research |
| title | Imprint of a scalar era on the primordial spectrum of gravitational waves |
| title_full | Imprint of a scalar era on the primordial spectrum of gravitational waves |
| title_fullStr | Imprint of a scalar era on the primordial spectrum of gravitational waves |
| title_full_unstemmed | Imprint of a scalar era on the primordial spectrum of gravitational waves |
| title_short | Imprint of a scalar era on the primordial spectrum of gravitational waves |
| title_sort | imprint of a scalar era on the primordial spectrum of gravitational waves |
| url | http://doi.org/10.1103/PhysRevResearch.1.013010 |
| work_keys_str_mv | AT francescoderamo imprintofascalareraontheprimordialspectrumofgravitationalwaves AT kaischmitz imprintofascalareraontheprimordialspectrumofgravitationalwaves |