Primordial backgrounds of relic gravitons
| Autor: | Massimo Giovannini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Astrophysics and Astronomy
Nuclear and High Energy Physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) gr-qc Cosmic microwave background FOS: Physical sciences General Relativity and Quantum Cosmology (gr-qc) Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences Cosmology General Relativity and Quantum Cosmology Gravitation High Energy Physics - Phenomenology (hep-ph) Pulsar Big Bang nucleosynthesis 0103 physical sciences 010306 general physics Particle Physics - Phenomenology Physics General Relativity and Cosmology 010308 nuclear & particles physics hep-th Graviton hep-ph Polarization (waves) High Energy Physics - Phenomenology astro-ph.CO Electroweak epoch Particle Physics - Theory Astrophysics - Cosmology and Nongalactic Astrophysics |
| Popis: | The diffuse backgrounds of relic gravitons with frequencies ranging between the aHz band and the GHz region encode the ultimate information on the primeval evolution of the plasma and on the underlying theory of gravity well before the electroweak epoch. While the temperature and polarization anisotropies of the microwave background radiation probe the low-frequency tail of the graviton spectra, during the next score year the pulsar timing arrays and the wide-band interferometers (both terrestrial and hopefully space-borne) will explore a much larger frequency window encompassing the nHz domain and the audio band. The salient theoretical aspects of the relic gravitons are reviewed in a cross-disciplinary perspective touching upon various unsettled questions of particle physics, cosmology and astrophysics. 147 pages, 23 figures; corrected typos, discussions and references added |
| Databáze: | OpenAIRE |
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