Results 31 to 40 of about 147,206 (344)
Newtonian Collapse of Scalar Field Dark Matter [PDF]
Physical Review D, 2003 In this paper, we develop a Newtonian approach to the collapse of galaxy fluctuations of scalar field dark matter under initial conditions inferred from simple assumptions. The full relativistic system, the so-called ‘
F. S. Guzmán, L. Ureña‐López
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Slow-roll suppression of adiabatic instabilities in coupled scalar field-dark matter models [PDF]
, 2008 We study the evolution of linear density perturbations in the context of interacting scalar field-dark matter cosmologies, where the presence of the coupling acts as a stabilization mechanism for the runaway behavior of the scalar self-interaction ...
Pier-Stefano Corasaniti
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Study of rotation curves of spiral galaxies with a scalar field dark matter model [PDF]
, 2012 In this work we study rotation curves of spiral galaxies using a model of dark matter based on a scalar-tensor theory of gravity. We show how to estimate the scalar field dark matter parameters using a sample of observed rotation curves.Comment: 6 pages,
M. A. Rodríguez‐Meza
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Sensitivity of Atom Interferometry to Ultralight Scalar Field Dark Matter. [PDF]
Physical Review Letters, 2016 We discuss the use of atom interferometry as a tool to search for dark matter (DM) composed of virialized ultralight fields (VULFs). Previous work on VULF DM detection using accelerometers has considered the possibility of equivalence-principle-violating
A. Geraci, A. Derevianko
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Nonrelativistic approach for cosmological scalar field dark matter [PDF]
Physical Review D, 2013 We derive non-relativistic equations of motion for the formation of cosmological structure in a Scalar Field Dark Matter (SFDM) model corresponding to a complex scalar field endowed with a quadratic scalar potential.
L. Ureña‐López
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Effective field theory and scalar triplet dark matter
Journal of High Energy PhysicsWe discuss an extension of the standard model with a real scalar triplet, T, including non-renormalizable operators (NROs) up to d = 6. If T is odd under a Z 2 symmetry, the neutral component of T is a good candidate for the dark matter (DM) of the ...
Carolina Arbeláez +4 more
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Can dark matter be a scalar field? [PDF]
Journal of Cosmology and Astroparticle Physics, 2016 In this paper we study a real scalar field as a possible candidate to explain the dark matter in the universe. In the context of a free scalar field with quadratic potential, we have used Union 2.1 SN Ia observational data jointly with a Planck prior over the dark matter density parameter to set a lower limit on the dark matter mass as $m\geq0.12H_0 ...
J.F. Jesus +3 more
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UNIFIED DARK MATTER IN SCALAR FIELD COSMOLOGIES [PDF]
Modern Physics Letters A, 2007 Considering the general Lagrangian of k-essence models, we study and classify them through variables connected to the fluid equation of state parameter wκ. This allows one to find solutions around which the scalar field describes a mixture of dark matter and cosmological constant-like dark energy, an example being the purely kinetic model proposed by ...
DANIELE BERTACCA +2 more
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Higgs particles interacting via a scalar Dark Matter field [PDF]
EPJ Web of Conferences, 2016 We study a system of two Higgs particles, interacting via a scalar Dark Matter mediating field. The variational method in the Hamiltonian formalism of QFT is used to derive relativistic wave equations for the two-Higgs system, using a truncated Fock ...
Bhattacharya Yajnavalkya, Darewych Jurij
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Scalar Field Dark Matter Quantum Effects as Dark Energy [PDF]
, 2009 Some paragraphs in order to clarify the paper and references added.
Tonatiuh Matos
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