Mostrando 4,761 - 4,780 Resultados de 5,650 Para Buscar '"cosmology"', tiempo de consulta: 0.12s Limitar resultados
  1. 4761
    “…We find that the predictions for $n_s$ and $r$ for $\alpha$-attractor cosmological models, compatible with the current cosmological data, are preserved in the presence of the neutrino sector.…”
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  2. 4762
    por Kirilova, D.P.
    Publicado 2001
    “…The production of helium-4 during the cosmological nucleosynthesis in the presence of active--sterile neutrino oscillations, efficient after decoupling of electron neutrino, is analyzed. …”
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  3. 4763
    por Giovannini, Massimo
    Publicado 2008
    “…In this plausible extension of the current cosmological paradigm, hereby dubbed Tensor-$\Lambda$CDM (i.e. …”
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  4. 4764
    por Bellini, Emilio, Jimenez, Raul
    Publicado 2013
    “…The effective equation of state is indistinguishable from that of a cosmological constant w = -1 and the data constraint it to have no temporal variations of more than at the few % level. …”
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  5. 4765
    “…Including the metric fluctuations of a realistic cosmological geometry we reconsider an earlier suggestion that measuring the relative time-of-flight of ultra-relativistic particles can provide interesting constraints on fundamental cosmological and/or particle parameters. …”
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  6. 4766
    “…Cosmological parameter estimation from forthcoming experiments promise to reach much greater precision than current constraints. …”
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  7. 4767
    “…We used IllustrisTNG cosmological simulations to study the effect of magnetized galactic wind bubbles on the secondary γ-ray flux.Results. …”
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  8. 4768
    por Overbye, D
    Publicado 2002
    “…Article describing the cosmological theory of multiple universes (2 page).…”
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  9. 4769
    por Angelantonj, Carlo
    Publicado 1999
    “…Generically, these vacua generate a non-vanishing cosmological constant. However, one can construct particular kinds of Scherk-Schwarz compactifications with vanishing cosmological constant, at least for low orders, based on asymmetric orbifolds. …”
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    Enlace del recurso
  10. 4770
    “…Our model also allows for the anthropic solution of the cosmological constant problem.…”
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  11. 4771
    por Jones, A. W., Lasenby, A. N.
    Publicado 1998
    “…New predictions for cosmological defect theories and an overview of the inflationary theory are discussed. …”
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    Online Artículo Texto
  12. 4772
    por Laine, M.
    Publicado 1999
    “…We review the motivation for, lattice results on, and some implications of, external magnetic fields present at the time of the cosmological electroweak phase transition.…”
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  13. 4773
    “…These equations allow to follow the time evolution of the cosmic microwave background anisotropies at all angular scales from the early epoch, when the cosmological perturbations were generated, to the present, through the recombination era. …”
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  14. 4774
    “…The recent measurements of the cosmological parameter H0 from the direct local observations and the inferred value from the cosmic microwave background show approximately 4σ discrepancy. …”
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  15. 4775
    “…The solutions simplify considerably in the presence of a negative cosmological constant, particularly for the limiting cases of a very large cosmological constant or very small gauge field. …”
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  16. 4776
    por Rostworowski, Andrzej
    Publicado 2016
    “…On the other hand the negative cosmological constant allows for the existence of stable, time-periodic, asymptotically AdS solutions of Einstein equations [arXiv:1303.3186].…”
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  17. 4777
    “…We consider spherically symmetric higher-dimensional solutions of Einstein's equations with a bulk cosmological constant and n transverse dimensions. In contrast to the case of one or two extra dimensions we find no solutions that localize gravity when $n\geq 3$, for strictly local topological defects. …”
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  18. 4778
    “…The solutions are characterized by a non-trivial warping along the extra dimension, even in the case of a vanishing bulk cosmological constant, and lead to a variety of inflationary, time-dependent solutions of the 3D scale factor on the brane. …”
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  19. 4779
    por Vannerom, David
    Publicado 2019
    “…Numerous cosmological observations support the existence of a large amount of non-radiating matter in the universe which cannot originate from any Standard Model (SM) particle. …”
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  20. 4780
    “…Within the low scale resonant leptogenesis scenario, the cosmological CP asymmetry may arise by radiative corrections through the charged lepton Yukawa couplings. …”
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