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The era of precision cosmology allows us to test the composition of the dark matter. Mixed ultralight or fuzzy dark matter (FDM) is a cosmological model with dark matter composed of a combination of particles of mass $m\leq…

Cosmology and Nongalactic Astrophysics · Physics 2023-12-11 Alex Laguë , Bodo Schwabe , Renée Hložek , David J. E. Marsh , Keir K. Rogers

We study cosmological structure formation with ultralight axion dark matter, or "fuzzy dark matter (FDM), using a particle-mesh scheme to account for the quantum pressure arising in the Madelung formulation of the Schr\"odinger-Poisson…

Cosmology and Nongalactic Astrophysics · Physics 2017-01-03 Jan Veltmaat , Jens C. Niemeyer

Dark matter models involving a very light bosonic particle, generally known as Fuzzy Dark Matter (FDM), have been recently attracting great interest in the cosmology community, as their wave-like phenomenology would simultaneously explain…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-23 Matteo Nori , Marco Baldi

We introduce a tool that solves the Schr\"odinger-Euler-Poisson system of equations and allows the study of the interaction between ultralight bosonic dark matter, whose dynamics is described with the Schr\"odinger-Poisson system and…

Astrophysics of Galaxies · Physics 2022-12-09 Iván Alvarez-Ríos , Francisco S. Guzmán

We present the results of a full cosmological simulation with the new code SCALAR, where dark matter is in form of fuzzy dark matter, described by a light scalar field with a mass of $m_{\rm B} = 2.5 \times 10^{-22}$ eV and evolving…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-08 Mattia Mina , David F. Mota , Hans A. Winther

Axion-like particle (ALP) dark matter shows distinctive behavior on scales where wavelike effects dominate over self-gravity. Ultralight axions are candidates for fuzzy dark matter (FDM) whose de Broglie wavelength in virialized halos…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-15 Jens C. Niemeyer

Fuzzy dark matter (FDM), composed of ultralight bosons, exhibits intricate wave phenomena on galactic scales. Compared to cold dark matter, FDM simulations are significantly more computationally demanding due to the need to resolve the de…

Cosmology and Nongalactic Astrophysics · Physics 2026-04-07 Hsi-Yu Schive

We investigate nonlinear structure formation in the fuzzy dark matter (FDM) model using both numerical and perturbative techniques. On the numerical side, we examine the virtues and limitations of a Schrodinger-Poisson solver (wave…

Cosmology and Nongalactic Astrophysics · Physics 2019-03-27 Xinyu Li , Lam Hui , Greg L. Bryan

We illustrate the effect of boundary conditions on the evolution of structure in Fuzzy Dark Matter. Scenarios explored include the evolution of single, ground-state equilibrium solutions of the Schr\"odinger-Poisson system, the relaxation…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-26 Iván Alvarez-Ríos , Francisco S. Guzmán , Paul R. Shapiro

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

Fuzzy Dark Matter (FDM) has recently emerged as an interesting alternative model to the standard Cold Dark Matter (CDM). In this model, dark matter consists of very light bosonic particles with quantum mechanical effects on galactic scales.…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-08 Sana Elgamal , Matteo Nori , Andrea V. Macciò , Marco Baldi , Stefan Waterval

The Ultra-Light Axion (ULA) is a dark matter candidate with mass $\mathcal{O}(10^{-22})$eV and de Broglie wavelength of order kpc. Such an axion, also called the Fuzzy Dark Matter (FDM), thermalizes via the gravitational force and forms a…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-30 Jiajun Zhang , Yue-Lin Sming Tsai , Jui-Lin Kuo , Kingman Cheung , Ming-Chung Chu

We investigate phenomenologically the viability of fuzzy dark matter (FDM). We do this by confronting the predictions of the model, in particular, the formation of a solitonic core at the center of dark matter halos, with a homogeneous and…

Astrophysics of Galaxies · Physics 2024-03-15 Andrés Bañares-Hernández , Andrés Castillo , Jorge Martin Camalich , Giuliano Iorio

We present the first high-resolution zoom-in simulation of a Milky-way-like halo extracted from the Aquarius Project in the Fuzzy Dark Matter (FDM) framework. We use the N-body code AX-GADGET, based on a particle oriented solution of the…

Cosmology and Nongalactic Astrophysics · Physics 2023-04-26 Matteo Nori , Andrea V. Macciò , Marco Baldi

Axion particles can form macroscopic condensates, whose size can be galactic in scale for models with very small axion masses $m\sim10^{-22}$ eV, and which are sometimes referred to under the name of Fuzzy Dark Matter. Many analyses of…

High Energy Physics - Phenomenology · Physics 2018-02-21 Joshua Eby , Michael Ma , Peter Suranyi , L. C. R. Wijewardhana

By performing numerical simulations, we discuss the collisional dynamics of stable solitary waves in the Schrodinger-Poisson equation. In the framework of a model in which part or all of dark matter is a Bose-Einstein condensate of…

Cosmology and Nongalactic Astrophysics · Physics 2016-03-17 Angel Paredes , Humberto Michinel

We present a new module of the parallel N-Body code P-GADGET3 for cosmological simulations of light bosonic non-thermal dark matter, often referred as Fuzzy Dark Matter (FDM). The dynamics of the FDM features a highly non-linear Quantum…

Cosmology and Nongalactic Astrophysics · Physics 2018-07-06 M. Nori , M. Baldi

Fuzzy dark matter of ultra-light axions has gained attention, largely in light of the galactic scale problems associated with cold dark matter. But the large de Broglie wavelength, believed to possibly alleviate these problems, also leads…

Astrophysics of Galaxies · Physics 2020-01-08 Amr El-Zant , Jonathan Freundlich , Francoise Combes , Anaelle Halle

This paper investigates the feasibility of simulating Fuzzy Dark Matter (FDM) with a reduced number of spatial dimensions. Our aim is to set up a realistic, yet numerically inexpensive, toy model in $(1+1)$-dimensional space time, that -…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Tim Zimmermann , Nico Schwersenz , Massimo Pietroni , Sandro Wimberger

We present constraints on the masses of extremely light bosons dubbed fuzzy dark matter from Lyman-$\alpha$ forest data. Extremely light bosons with a De Broglie wavelength of $\sim 1$ kpc have been suggested as dark matter candidates that…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-01 Vid Iršič , Matteo Viel , Martin G. Haehnelt , James S. Bolton , George D. Becker
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