Testing primordial black holes as dark matter in supergravity from gravitational waves
Aldabergenov Y. Addazi A. Ketov S.V.
10 March 2021Elsevier B.V.
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
2021#814
We explore the Gravitational Waves (GW) phenomenology of a simple class of supergravity models that can explain and unify inflation and Primordial Black Holes (PBH) as Dark Matter (DM). Our (modified) supergravity models naturally lead to a two-field attractor-type double inflation, whose first stage is driven by Starobinsky scalaron and the second stage is driven by another scalar belonging to a supergravity multiplet. The PBHs formation in our supergravity models is efficient, compatible with all observational constraints, and predicts a stochastic GW background. We compute the PBH-induced GW power spectrum and show that GW signals can be detected within the sensitivity curves of the future space-based GW interferometers such as LISA, DECIGO, TAIJI and TianQin projects, thus showing predictive power of supergravity in GW physics and their compatibility.
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Department of Physics, Faculty of Science, Chulalongkorn University, Thanon Phayathai, Pathumwan, Bangkok, 10330, Thailand
Institute of Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, Almaty, 050040, Kazakhstan
Center for Theoretical Physics, College of Physics, Science and Technology, Sichuan University, Chengdu, 610065, China
INFN, Sezione Roma Tor Vergata, Rome, I-00133, Italy
Department of Physics, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachioji-shi, Tokyo, 192-0397, Japan
Research School of High-Energy Physics, Tomsk Polytechnic University, 2a Lenin Avenue, Tomsk, 634028, Russian Federation
Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, Kashiwa, 277-8583, Japan
Department of Physics
Institute of Experimental and Theoretical Physics
Center for Theoretical Physics
INFN
Department of Physics
Research School of High-Energy Physics
Kavli Institute for the Physics and Mathematics of the Universe (WPI)
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