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Scalar Field Dark Matter (SFDM) comprised of ultralight ($\gtrsim 10^{-22}$ eV) bosons is an alternative to standard, collisionless Cold Dark Matter (CDM) that is CDM-like on large scales but inhibits small-scale structure formation. As a…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-04 Paul R. Shapiro , Taha Dawoodbhoy , Tanja Rindler-Daller

Scalar Field Dark Matter (SFDM), comprised of ultralight ($\gtrsim 10^{-22}$ eV) bosons, is distinguished from massive ($\gtrsim$ GeV), collisionless Cold Dark Matter (CDM) by its novel structure-formation dynamics as Bose-Einstein…

Astrophysics of Galaxies · Physics 2021-05-26 Sonja O. Schobesberger , Tanja Rindler-Daller , Paul R. Shapiro

(abridged) We present simulations of halo formation and evolution in scalar field dark matter (SFDM) cosmologies in the Thomas-Fermi regime, aka ``SFDM-TF", where a strong repulsive 2-particle self-interaction (SI) is included, being a…

Astrophysics of Galaxies · Physics 2023-08-21 Horst Foidl , Tanja Rindler-Daller , Werner Zeilinger

An intriguing alternative to cold dark matter (CDM) is that the dark matter is a light ( $m \sim 10^{-22}$ eV) boson having a de Broglie wavelength $\lambda \sim 1$ kpc, often called fuzzy dark matter (FDM). We describe the arguments from…

Cosmology and Nongalactic Astrophysics · Physics 2017-03-08 Lam Hui , Jeremiah P. Ostriker , Scott Tremaine , Edward Witten

Scalar-field dark matter (SFDM) halos exhibit a core-envelope structure with soliton-like cores and CDM-like envelopes. Simulations without self-interaction (free-field case) report a core-halo mass relation $M_c\propto M_{h}^{\beta}$, with…

Astrophysics of Galaxies · Physics 2022-11-08 Luis E. Padilla , Tanja Rindler-Daller , Paul R. Shapiro , Tonatiuh Matos , J. Alberto Vázquez

Fuzzy dark matter (FDM) made of ultra-light bosonic particles is a viable alternative to cold dark matter (CDM) with clearly distinguishable small-scale features in collapsed structures. On large scales, it behaves gravitationally like CDM…

Cosmology and Nongalactic Astrophysics · Physics 2022-05-11 Bodo Schwabe , Jens C. Niemeyer

Building upon results of cosmological simulations of ultra-light scalar field dark matter (SFDM), we present a comprehensive model for the density profiles of SFDM haloes as a function of halo virial mass $M_{\rm h}$ and scalar field mass…

Cosmology and Nongalactic Astrophysics · Physics 2018-12-12 Victor H. Robles , James S. Bullock , Michael Boylan-Kolchin

The scalar field endowed with a cosh scalar field potential, behaves exactly in the same way as cold dark matter (CDM) in the region where the scalar field oscillates around its minimum. Also, in the linear regime, the scalar field dark…

Astrophysics · Physics 2021-02-09 Argelia Bernal , Tonatiuh Matos , Dario Nunez

In the last time the cold dark matter (CDM) model has suggested more and more that it is not able to describe all the properties of nearby galaxies that can be observed in great detail as well as that it has some problems in the mechanism…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Juan Magaña , Tonatiuh Matos , Victor Robles , Abril Suárez

In recent times, the Scalar Field Dark Matter (SFDM) model (also called Fuzzy, Wave, Ultralight dark matter model) has received much attention due to its success in describing dark matter on both cosmological and galactic scales. Several…

Astrophysics of Galaxies · Physics 2022-03-25 Tonatiuh Matos , Abdel Perez-Lorenzana , Jordi Solís-López

Dark matter may be composed of light bosons, ${m_b \sim 10^{-22}\, \mathrm{eV}}$, with a de Broglie wavelength $\lambda \sim 1 \,\mathrm{kpc}$ in typical galactic potentials. Such `fuzzy' dark matter (FDM) behaves like cold dark matter…

Astrophysics of Galaxies · Physics 2019-01-28 Ben Bar-Or , Jean-Baptiste Fouvry , Scott Tremaine

Fuzzy Dark Matter (FDM), consisting of ultralight bosons, is an intriguing alternative to Cold Dark Matter. Numerical simulations solving the Schr\"odinger-Poisson (SP) equation, which governs FDM dynamics, show that FDM halos consist of a…

We have derived the first, fully-cosmological, similarity solutions for CDM halo formation in the presence of nongravitational collisionality, which provides an analytical theory of the effect of the self-interacting dark matter (SIDM)…

Astrophysics · Physics 2009-11-10 Kyungjin Ahn , Paul R. Shapiro

Fuzzy dark matter (FDM) is composed of ultra-light bosons having a de Broglie wavelength that is comparable to the size of the stellar component of galaxies at typical galactic velocities. FDM behaves like cold dark matter on large scales.…

Astrophysics of Galaxies · Physics 2021-07-07 Ben Bar-Or , Jean-Baptiste Fouvry , Scott Tremaine

Fuzzy dark matter (FDM) is a dark matter candidate consisting of ultra-light scalar particles with masses around $10^{-22} \mathrm{eV}/c^2$, a regime where cold bosonic matter behaves as a collective wave rather than individual particles.…

Cosmology and Nongalactic Astrophysics · Physics 2023-07-19 Simon May , Volker Springel

Recent observations of tidal debris around galaxies have revealed that the structural properties of the spheroidal components of tidally disturbed galaxies are similar to those found in non-interacting early-type galaxies(ETGs), likely due…

Astrophysics of Galaxies · Physics 2015-03-04 Victor H. Robles , L. A. Martinez-Medina , T. Matos

(abridged)Scalar field dark matter (SFDM) made of bosons has become a popular alternative to the CDM paradigm, especially for its potential to cure the so-called "small-scale problems" of CDM. Cosmological simulations have determined that…

Cosmology and Nongalactic Astrophysics · Physics 2025-06-19 Matthias Stallovits , Tanja Rindler-Daller

It has been postulated that Fuzzy Dark Matter (FDM) could be a viable alternative to Cold Dark Matter (CDM). FDM is comprised of ultralight bosons which exist as a Bose-Einstein condensate. Due to the very low mass of FDM, the de Broglie…

Cosmology and Nongalactic Astrophysics · Physics 2019-02-28 V. Sreenath

Bose-Einstein-condensed dark matter, also called scalar-field dark matter (SFDM), has become a popular alternative to cold dark matter (CDM), because it predicts galactic cores, in contrast to the cusps of CDM halos ("cusp-core problem").…

Astrophysics of Galaxies · Physics 2022-06-08 Kevin Pils , Tanja Rindler-Daller

Self-interacting dark matter (SIDM) is an intriguing alternative to the standard cold dark matter (CDM) paradigm, which predicts that dark matter halos typically have large, isothermal cores. Numerical simulations have shown that dynamical…

Astrophysics of Galaxies · Physics 2026-02-16 Frank C. van den Bosch , Shashank Dattathri
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