Repulsive dark matter

By J. Goodman. 2000

270 citations recorded by the source corpus.

Abstract It seems necessary to suppress, at least partially, the formation of structure on subgalactic scales. As an alternative to warm or collisional dark matter, I postulate a condensate of massive bosons interacting via a repulsive interparticle potential, plus gravity. This leads to a minimum lengthscale for bound objects, and to superfluidity. Galactic dynamics may differ significantly from that of more generic dark matter in not unwelcome ways, especially in the core. Such particles can be realized as quanta of a relativistic massive scalar field with a quartic self-interaction. At high densities, the equation of state has the same form as that of an ideal relativistic gas despite the interactions. If the nonrelativistic lengthscale is of order a kiloparsec, then the energy density in these particles was comparable to that of photons at early times, but small enough to avoid conflict with primordial nucleosynthesis.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/c77251ddd9f7984aebf00e9c40a469eda2bab98a

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Citations in the corpus

CONTRASTING GALAXY FORMATION FROM QUANTUM WAVE DARK MATTER, ψDM, WITH ΛCDM, USING PLANCK AND HUBBLE DATA (2015, background): “They are non-thermally generated and can be described by a single coherent wave function (Turner 1983; Goodman 2000; Böhmer & Harko 2007; Sikivie & Yang 2009; Davidson 2015; Guth et al. 2015).”
Theory of dark matter superfluidity (2015, background): “This effect has been pointed out in BEC DM [117, 156] and MOND [42].”
Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: II. Numerical results (2011, background): “A massive scalar field or a boson condensate with quartic - or close to quartic - self-coupling was also proposed as a possible dark mat- 5 ter candidate by Peebles (2000) [92], who called it “fluid dark matter” and by Goodman (2000) [93] who called it “repulsive dark matter”.”
Growth of perturbations in an expanding universe with Bose-Einstein condensate dark matter (2011, background): “Therefore, some authors (Lee & Koh 1996, Peebles 2000, Goodman 2000, Arbey et al. 2003, Böhmer & Harko 2007) proposed that dark matter halos themselves could be in the form of gigantic self-gravitating Bose-Einstein condensates with short-range interactions described by a single wave function ψ(r,…”
Ultralight scalars as cosmological dark matter (2016, background): “Here we ask how dynamical friction is modified if the dark matter in dwarf galaxies is comprised of FDM rather than CDM [13].”
Constraints on Warm Dark Matter from Cosmological Reionization (2001, background): “Self-interacting dark matter particles in the initial state of a cold Bose-Einstein condensate, with a repulsive interaction added to gravity, can also suppress halo cores (Goodman 2000 ; Peebles 2000).”
Self-Interacting Dark Matter Halos and the Gravothermal Catastrophe (2001, background): “…(2000) focused on a scattering interaction, but the general concept has been expanded by various authors, including fluid (Peebles 2000), repulsive (Goodman 2000), fuzzy (Hu, Barkana, & Gruzinuv 2000), decaying (Cen 2001; Bento et al. 2000), or annihilating (Riotto & Tkachev 2000; Kaplinghat,…”
Small scale problems of the $\Lambda$CDM model: a short review (2016, background): “SIDM has been declined in several variations with altered properties: negative scattering leads to repulsive DM (RDM) [232], a condensate of massive bosons, which superfluid behaviour in the central part of DM haloes smoothes down the cuspy profiles [351].”
Angular Momentum and Vortex Formation in Bose-Einstein-Condensed Cold Dark Matter Haloes (2011, methodology): “…CDM: One prime motivation for considering BECs for CDM has been their ability to produce galactic haloes with constant density cores, see e.g. Goodman (2000) (”repulsive DM”) and Peebles (2000) (”fluid DM”), since the corresponding profiles may then better agree with observed rotation curves…”
Gravitational probes of dark matter physics (2017, background): “(43) With mF in the range of 10 6 − 1011 GeV, the gravitino masses can range from ∼ 100 eV up to 100 TeV.”
Dwarf galaxy rotation curves and the core problem of dark matter haloes (2000, background): “…2000; Matos, Siddharta & Urena-López 2000), and various sorts of self-interacting or annihilating dark matter (hereafter SIDM; Carlson, Machacek & Hall 1992; Spergel & Steinhardt 2000; Mohapatra & Teplitz 2000; Firmani et al. 2000; Goodman 2000; Kaplinghat, Knox & Turner 2000; Bento et al. 2000).”
Halo Cores and Phase-Space Densities: Observational Constraints on Dark Matter Physics and Structure Formation (2000, background): “…CDM on large scales, while modifying the manifestations of dark matter on small scales (Spergel & Steinhart 1999, Hogan & Dalcanton 2000, Sommer-Larson & Dolgov 1999, Mohapatra & Teplitz 2000, Peebles 2000, Goodman 2000, Riotto & Tkachev 2000, Hu et al. 2000, Shi & Fuller 1999, Colin et al. 2000.)”
Halo Properties in Cosmological Simulations of Self-interacting Cold Dark Matter (2000, background): “…theories are that the dark matter is warm (Sommer- Larsen & Dolgov 2000; Coĺin, Avila-Reese & Valenzuela 2000; Hannestad & Scherrer 2000), repulsive (Goodman 2000), fluid (Peebles 2000), fuzzy (Hu, Barkana & Gruzinov 2000), decaying (Cen 2000), annihilating (Kaplinghat, Knox & Turner 2000), and…”
Bar-driven Dark Halo Evolution: A Resolution of the Cusp-Core Controversy (2001, background): “Some changed the fundamental nature of the dark matter particle itself: collisional dark matter (Spergel and Steinhardt 2000), decaying dark matter (Cen 2001), fluid dark matter (Peebles 2000), repulsive dark matter (Goodman 2000), and annihilating dark matter (Kaplinghat et al. 2000).”