Year: 2024
Type: article
Abstract: We consider the phase shift in the gravitational wave signal induced by fast oscillations of scalar dark matter surrounding binary systems, which could be probed by the future experiments LISA and DECIGO. This effect depends on the local matter density and the mass of the dark matter particle. We compare it to the phase shift due to a standard dynamical friction term, which should generically be present. We find that the effect associated with the oscillations only dominates over the dynamical friction for dark matter masses below ${10}^{\ensuremath{-}21}\text{ }\text{ }\mathrm{eV}$, with masses below ${10}^{\ensuremath{-}23}\text{ }\text{ }\mathrm{eV}$ implying cloud sizes that are too large to be realistic. Moreover, for masses of the order of ${10}^{\ensuremath{-}21}\text{ }\text{ }\mathrm{eV}$, LISA and DECIGO would only detect this effect for dark matter densities greater than that in the solar system by a factor ${10}^{5}$ or ${10}^{4}$ respectively. We conclude that this signal can be ignored for most dark matter scenarios unless very dense clouds of very light dark matter are created early in the Universe at a redshift $z\ensuremath{\sim}{10}^{4}$.
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: European Cooperation in Science and Technology, Agence Nationale de la Recherche, Federación Española de Enfermedades Raras, Ministerio de Ciencia e Innovación, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Université Paris-Saclay, Science and Technology Facilities Council, Agencia Estatal de Investigación, Institut National de Physique Nucléaire et de Physique des Particules
Awards: G1610782679, G1855990336, G1999187355, G2262748287, G2610760373, G2660406951, Idex Paris-Saclay, G332510590, G3408140573, G3480869486, G3518538256, G3690828678, G3811025905, G4117354703, G4201897825, G425668148, G4546701545, G463759079, G4810098524, G4866930200, G5263632016, G5421974903, G652074185, The Cosmology of the Early and Late Universe, G7084143925, G7240651115, G7376787254, G7600792, Physics of the 2 infinities and the origins, G8684520763, G8920660035
OpenAlex ID: W4391673275