205 citations · 2.4k across the 59 of their papers we have counts for
11 papers · 1 filter
Scalar Field Dark Matter: head-on interaction between two structures
Argelia Bernal, F. Siddhartha Guzman
In this manuscript we track the evolution of a system consisting of two self-gravitating virialized objects made of a scalar field in the newtonian limit. The Schrödinger-Poisson s…
Scalar Field Dark Matter: non-spherical collapse and late time behavior
Argelia Bernal, F. Siddhartha Guzman
We show the evolution of non-spherically symmetric balls of a self-gravitating scalar field in the Newtonian regime or equivalently an ideal self-gravitating condensed Bose gas. In…
Gravitational cooling of self-gravitating Bose-Condensates
F. Siddhartha Guzman, L. Arturo Urena-Lopez
Equilibrium configurations for a self-gravitating scalar field with self-interaction are constructed. The corresponding Schrödinger-Poisson (SP) system is solved using finite diffe…
Newtonian Collapse of Scalar Field Dark Matter
F. Siddhartha Guzman, L. Arturo Urena-Lopez
In this letter, we develop a Newtonian approach to the collapse of galaxy fluctuations of scalar field dark matter under initial conditions inferred from simple assumptions. The fu…
Scalar Field Dark Matter and Galaxy Formation
Miguel Alcubierre, F. Siddhartha Guzman, Tonatiuh Matos +3
We present a general description of the scalar field dark matter (SFDM) hypothesis in the cosmological context. The scenario of structure formation under such a hypothesis is based…
Scalar Field Dark Matter
T. Matos, F. S. Guzman, L. A. Urena-Lopez +1
This work is a review of the last results of research on the Scalar Field Dark Matter model of the Universe at cosmological and at galactic level. We present the complete solution…
Geometric Conditions on the Type of Matter Determining the Flat Behavior of the Rotational Curves in Galaxies
Tonatiuh Matos, Dario Nunez, F. Siddhartha Guzman +1
In an arbitrary axisymmetric stationary spacetime, we determine the expression for the tangential velocity of test objects following a circular stable geodesic motion in the equato…
Quintessence-like Dark Matter in Spiral Galaxies
F. Siddhartha Guzman, Tonatiuh Matos, Dario Nunez +1
Through the geodesic analysis of a static and axially symmetric space time, we present conditions on the state equation of an isotropic perfect fluid , when it is considered…
Spherical Scalar Field Halo in Galaxies
T. Matos, F. S. Guzman, D. Nunez
We study a spherically symmetric fluctuation of scalar dark matter in the cosmos and show that it could be the dark matter in galaxies, provided that the scalar field has an expone…
Quintessence at Galactic Level?
T. Matos, F. S. Guzman
Recently it has been proposed that the main contributor to the dark energy of the Universe is a dynamical, slow evolving, spatially inhomogeneous scalar field called quintessence.…
Scalar dark matter in spiral galaxies
F. S. Guzman, T. Matos, H. Villegas-Brena
An exact, axially symmetric solution to the Einstein-Klein-Gordon field equations is employed to model the dark matter in spiral galaxies. The extended rotation curves from a previ…