axion

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Earlier, now disproven hypotheses as to the structure of dark matter had suggested it may be composed of particles such as the neutralino or the axion, or various groupings whimsically known in astrophysicist parlance as WIMPs and MACHOs.

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Definitions (1)

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  1. noun A hypothetical boson having no charge or spin and small mass, proposed to explain the existence of certain symmetries of the strong nuclear force.

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Examples (25)

  • Earlier, now disproven hypotheses as to the structure of dark matter had suggested it may be composed of particles such as the neutralino or the axion, or various groupings whimsically known in astrophysicist parlance as WIMPs and MACHOs. —  Front page feed
  • We study axion cosmology in a 5D Universe, in the case of flat and warped extra dimension. —  CiteULike: Everyone's library
  • It is shown also that in most axion models the effective parameter ƒ a rapidly changes during inflation. —  CiteULike: Everyone's library
  • We show how, by making use of a new basis of the IIB supergravity axion-dilaton coset, SL (2, R) / SO (2), 7-branes that belong to different conjugacy classes of the duality group SL (2, R) naturally couple to IIB supergravity with appropriate source terms characterized by an SL (2, R) charge matrix Q. —  The Reference Frame
  • Thus, a smooth dark energy is an inappropriate concept and it is important to check the effects of dark energy perturbations when one attempts to ignore their perturbations in dark energy models based on the scalar field or modified gravity theories. acceleration alternative-models angular-momentum anisotropy antimatter astrophysics averaging axion back-reaction bao baryogenesis bbn beyond-standard-model biermann-battery bigravity bispectrum black-holes b-modes boltzmann-code born-approximation bubble-collisions camb causality cluster cmb cmb-lensing cold-spot computational constraints copernican-principle cosmic-magnification cosmic-rays cosmic-strings cosmography cosmological-constant cosmology covariant curvature dark-energy dark-matter dark-radiation dark-spinor dark-stars defects dgp distance-ratio dynamo early-de early-matter-era einstein-aether einstein-static electrodynamics electromagnetism electroweak emergent-universe eos expansion-history experimental flexion galactic galaxy-survey gamma-ray-bursts gauss-bonnet general-relativity generation geometry gravitational-slip gravitational-waves gravity-tests growth-factor halo-model harrison-mechanism helicity high-energy higher-dimensional higher-order-statistics inflation inhomogeneous interacting-dark-sector intrinsic-alignment isw kinetic-theory laboratoy large-scale-structure lectures lensing lensing-reconstruction linear loop-quantum-gravity lorentz-invariance magn magnetic-fields magnetic-monopoles matter-power mhd model-independent modified-gravity mond multifluid n-body neutrino-mass non-adiabatic non-extensive non-gaussianity nonlinear non-linear-electrodynamics observational om-diagnostic palatini parameter-estimation peculiar-velocities perturbations phase-transition philosophy planck polarization primordial-power-spectrum principal-components psf-correction qcd quantum-cosmology quantum-gravity quintessence radio-lensing ray-tracing recombination reconstruction redshift-space-distortions reduced-shear reionization review scalar-tensor-theory seeds shear simulation ska snap spherical-symmetric stability standard-sirens statistical stochastic-background strong-lensing structure-formation superconducting-strings supernovae swiss-cheese tensor-modes thermodynamics topology torsion turbulence unified-dark-sector vacuum-fluctuations vector-fields vector-tensor-theory viability voids vorticity weak-lensing x-ray CiteULike organises scholarly (or academic) papers or literature and provides bibliographic (which means it makes bibliographies) for universities and higher education establishments. —  CiteULike: Everyone's library
 

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