Science with the space-based interferometer LISA. IV: probing inflation with gravitational waves

By N. Bartolo, C. Caprini, V. Domcke, Daniel G. Figueroa, Juan García-Bellido, M. C. Guzzetti, M. Liguori, S. Matarrese, Marco Peloso, A. Petiteau and 4 more. 2016

494 citations recorded by the source corpus.

We investigate the potential for the LISA space-based interferometer to detect the stochastic gravitational wave background produced from different mechanisms during inflation. Focusing on well-motivated scenarios, we study the resulting contributions from particle production during inflation, inflationary spectator fields with varying speed of sound, effective field theories of inflation with specific patterns of symmetry breaking and models leading to the formation of primordial black holes. The projected sensitivities of LISA are used in a model-independent way for various detector designs and configurations. We demonstrate that LISA is able to probe these well-motivated inflationary scenarios beyond the irreducible vacuum tensor modes expected from any inflationary background.

Subfields: Astronomy and Astrophysics, Oceanography

View Paper: https://www.semanticscholar.org/paper/124583a18f059937e8cfb706f14199ab5262457b

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Citations in the corpus

Primordial gravitational waves, precisely: the role of thermodynamics in the Standard Model (2018, background): “can lead to cosmological backgrounds of GWs whose amplitude at high frequencies is much larger than the nearly scale invariant spectrum predicted in the standard inflationary scenario, and such scenarios are explored by planned experiments such as LISA in the near future [112].”
Massive Primordial Black Holes as Dark Matter and their detection with Gravitational Waves (2017, background): “The merging of PBH soon after recombination to form larger mass black holes is a powerful source of gravitational waves, with efficiency of order few permil, which redshifts faster than matter and thus can reach ΩGWh 2 ∼ 10−6 today, from unresolved mergers, going back to at least z ∼ 200, and freque”
Gravitational wave signatures of inflationary models from Primordial Black Hole dark matter (2017, background): “[32], that is expected to be the closest to the final LISA configuration.”
Probing the pre-BBN universe with gravitational waves from cosmic strings (2018, background): “5 we show the expected sensitivities of LISA, BBO, ET, and CE in the T∆−Gµ plane.”
Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies (2020, background): “Bartolo et al. (2016b) discusses three broad categories: the presence of extra fields that are amplified in the later stages of inflation (so to affect only scales much smaller than the CMB ones); GW production in the effective field theory framework of broken spatial reparametrizations and GWs…”
Testing modified gravity at cosmological distances with LISA standard sirens (2019, methodology): “2 − 3 [167] and MBHBs at z & 1 [168], implying that LISA will constitute a cosmological probe able to map the expansion of the universe from local to very large distances [169].”
Gravitational wave, collider and dark matter signals from a scalar singlet electroweak baryogenesis (2017, background): “3 and 4, we illustrate this effect and show the regions of the parameter space accessible to the most promising future GW detectors, specifically LISA (with the most promising configuration A5M5) [68] and BBO [69].”
The Gravitational-Wave Physics (2017, background): “If it is a blue-tilted tensor spectrum predicted by inflationary models beyond slow-roll or caused by the source term, the direct detection might be possible in the future [35].”