Results 41 to 50 of about 143,913 (244)
New mechanism of producing superheavy Dark Matter
Physics Letters B, 2019 We study in detail the recently proposed mechanism of generating superheavy Dark Matter with the mass larger than the Hubble rate at the end of inflation. A real scalar field constituting Dark Matter linearly couples to the inflaton.
Eugeny Babichev +2 more
doaj +3 more sources
The continuous tower of scalar fields as a system of interacting dark matter–dark energy
Physics Letters B, 2015 This paper aims to introduce a new parameterisation for the coupling Q in interacting dark matter and dark energy models by connecting said models with the Continuous Tower of Scalar Fields model.
Paulo Santos
doaj +4 more sources
Complex scalar field dark matter on galactic scales [PDF]
Modern Physics Letters A, 2013 The nature of the cosmological dark matter (DM) remains elusive. Recent studies have advocated the possibility that DM could be composed of ultra-light, self-interacting bosons, forming a Bose–Einstein condensate (BEC) in the very early Universe.
T. Rindler-Daller, P. Shapiro
semanticscholar +5 more sources
Newtonian collapse of scalar field dark matter [PDF]
Physical Review D, 2003 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 full relativistic system, the so called Einstein-Klein-Gordon, is reduced to the Schr dinger-Newton one in the weak field limit. The scaling symmetries of the SN equations are
F. S. Guzmán, L. Arturo Ureña–López
openalex +5 more sources
Oscillating scalar-field dark matter in supergravity [PDF]
Journal of High Energy Physics, 2001 We show that an oscillating scalar field in supergravity of mass of the order of $\sim$ TeV with a nonzero vacuum expectation value ($\sim 10^{10}$ GeV) can be a candidate of cold dark matter (CDM). To avoid the gravitino problem, we need a low reheating temperature after the primordial inflation.
Osamu Seto +2 more
openalex +6 more sources
A brief Review of the Scalar Field Dark Matter model [PDF]
Journal of Physics: Conference Series, 2012 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 by which matter
J. Magaña, T. Matos
semanticscholar +4 more sources
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
semanticscholar +5 more sources
Scalar field theory for warm dark matter
The European Physical Journal Plus, 2020 19 pages, 3 figures. New comments added.
Jhonny A. Agudelo Ruiz
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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
doaj +7 more sources
Scalar field as dark matter in the universe [PDF]
Classical and Quantum Gravity, 2000 4 pages REVTeX, 1 eps figure. Minor changes.
L. Arturo Ureña-López +2 more
openaire +4 more sources