Mostrando 5,421 - 5,440 Resultados de 5,650 Para Buscar '"cosmology"', tiempo de consulta: 0.16s Limitar resultados
  1. 5421
    por Calfayan, P
    Publicado 2014
    “…Multiple cosmological observations indicate the existence of Dark Matter, which may be a weakly interacting massive particle (WIMP). …”
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  2. 5422
    “…We show that current bounds on these effective parameters do not vary significantly when considering an arbitrary value of the particle mass, or extended cosmological models with a free effective neutrino number, dynamical dark energy or a running of the primordial spectrum tilt. …”
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    Enlace del recurso
  3. 5423
    “…Similarly, evanescent fields do not propagate in D=4; a three-form field is in this class, since it is dual to a cosmological-constant contribution. In this Letter, we show that evanescent operators and fields modify the leading ultraviolet divergence in pure gravity. …”
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  4. 5424
    Publicado 2016
    “…Probing this structure or observing any deviation will have long-reaching implications on our understanding on how Nature works at its most fundamental level, including connections with other cosmological problems. The primary goal of this workshop is to bring together experts from the theoretical and experimental communities for a joint brainstorming on the status of this research, identify areas for improvements, as well as set new promising directions to be confronted with the first LHC data at 13 TeV.…”
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  5. 5425
    por Mielke, Eckehard W
    Publicado 2016
    “…After symmetry breaking, Einstein’s standard general relativity with cosmological constant emerges as a classical background. …”
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    Enlace del recurso
  6. 5426
    “…The notions of asymptotically flat spacetimes and of expanding universes with a cosmological horizon are analysed in detail, devoting special attention to the characterization of asymptotic symmetries. …”
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    Enlace del recurso
  7. 5427
    por Valle, Nicolo'
    Publicado 2021
    “…The interest in the phenomenology of relativistic heavy-ion collisions is driven by the many open points about the nature of the strong interaction, as well as by cosmological reasons. The physics of heavy ions is not limited to the study of the hot matter created when they collide (QGP, Quark-Gluon Plasma); the nuclear environment modifies the behaviour of their constituents independently on the subsequent QGP formation. …”
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  8. 5428
  9. 5429
    “…The rates are promisingly large when the soft supersymmetry-breaking mass parameters are chosen to be consistent with the cosmological relic-density constraints. In addition, we discuss mu -> e conversion on Titanium, which may also be accessible to future experiments.…”
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    Enlace del recurso
  10. 5430
  11. 5431
    “…We find actually that for m^4 / lambda = 50 - 75 eV^4, the agreement with the measurements of the circular speed of DDO 154 is impressive whereas it lessens for larger systems. The cosmological behavior of the field is also found to be consistent - yet marginally - with the limits set by BBN on the effective number of neutrino families. …”
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    Enlace del recurso
  12. 5432
    “…We identify the general mechanism for and limitations of the self-tuning of the effective 4D cosmological constant in higher-dimensional supergravity which these models illustrate.…”
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  13. 5433
    por Heinemeyer, S, Hollik, W, Weiglein, Georg
    Publicado 2004
    “…The mSUGRA scenario with cosmological constraints yields a very good fit to the data, showing a clear preference for a relatively light mass scale of the SUSY particles. …”
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    Enlace del recurso
  14. 5434
    “…Can MPP Together with Weinberg-Salam Higgs Provide Cosmological Inflation? (D.L. Bennett and H.B. Nielsen) 2. …”
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  15. 5435
    por Gustavino, Giuliano
    Publicado 2017
    “…Many cosmological observations indicate that the matter predicted and described by the Standard Model constitutes only a small fraction of the entire known universe. …”
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    Enlace del recurso
  16. 5436
    por De Lellis, Giovanni
    Publicado 2001
    “…The design has been optimized to explore the $\Delta m^2$ region of cosmological interest in relation to the Dark Matter in a high $sin^2(2\theta)$ sensitivity. …”
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  17. 5437
    “…The DGRB possibly encompasses contributions from different source populations such as star-forming galaxies, starburst galaxies, active galactic nuclei, gamma-ray bursts, or galaxy clusters. Here, we combine cosmological magnetohydrodynamical simulations of clusters of galaxies with the propagation of cosmic rays (CRs) using Monte Carlo simulations, in the redshift range z ≤ 5.0, and show that the integrated gamma-ray flux from clusters can contribute up to 100% of the DGRB flux observed by Fermi-LAT above 100 GeV, for CRs spectral indices α = 1.5 − 2.5 and energy cutoffs [Formula: see text] eV. …”
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    Online Artículo Texto
  18. 5438
    “…Through co-annihilations, models of inelastic dark matter (iDM) and inelastic Dirac dark matter (i2DM) can reproduce the observed relic density in the MeV to GeV mass range without violating cosmological limits. In these scenarios, the vector mediator behaves like a semi-visible particle, evading traditional bounds on visible or invisible resonances, and uncovering new parameter space to explain the muon [Formula: see text] anomaly. …”
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    Online Artículo Texto
  19. 5439
    “…Supposing that the Universe contains also the cosmological constant and a perfect fluid with a negative constant equation of state (EoS) parameter [Formula: see text] (e.g., quintessence, phantom or frustrated network of topological defects), we investigate scalar perturbations of the Friedmann–Robertson–Walker metrics due to inhomogeneities. …”
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    Enlace del recurso
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    Online Artículo Texto
  20. 5440
    por Markkanen, T.
    Publicado 2018
    “…In contrast to the usual semi-classical prescription, as the source term in the Friedmann equations we use expectation values where the unobservable information hidden by the cosmological event horizon has been neglected i.e. coarse grained over. …”
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    Enlace del recurso
    Enlace del recurso
    Online Artículo Texto
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