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4841“…At the same time, DGP gravity alters the gravitational force law in a specific and dramatic way at cosmologically accessible scales. We derive the DGP gravitational force law in a cosmological setting for spherical perturbations at subhorizon scales and compute the growth of large-scale structures. …”
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4842“…We consider spatially homogeneous (but generally non-isotropic) cosmologies in the recently proposed Horava-Lifshitz gravity and compare them to those of general relativity using Hamiltonian methods. …”
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info:eu-repo/semantics/article -
4843“…We propose a novel cosmological scenario, in which standard inflation is replaced by an expanding phase with a drastic violation of the Null Energy Condition (NEC): \dot H >> H^2. …”
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info:eu-repo/semantics/article -
4844“…In this mass range, the model parameter space is not only strongly constrained by the requirement to explain the light neutrino masses, but also by experimental searches and cosmological considerations. In the existing literature, three disjoint regions of potentially viable parameter space have been identified. …”
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4845Probing Newton's Constant on Vast Scales: DGP Gravity, Cosmic Acceleration and Large Scale Structure“…At the same time, DGP gravity alters the gravitational force law in a specific and dramatic way at cosmologically accessible scales. We derive the DGP gravitational force law in a cosmological setting for spherical perturbations at subhorizon scales and compute the growth of large-scale structure. …”
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4846“…This is a welcome feature for solving the cosmological constant problem, as was recently argued in the literature. …”
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4847por Hofmann, Ralf“…The terrestrial, astrophysical, and cosmological applications, mostly within the realm of low-temperature photon physics, are treated.…”
Publicado 2012
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4848por Georg Raffelt“…<br> Axions as hot dark matter, limits from cosmological structure formation.…”
Publicado 2005
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4849“…The terrestrial, astrophysical, and cosmological applications, mostly within the realm of low-temperature photon physics, are treated.…”
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4850Publicado 2005“…Axions as hot dark matter, limits from cosmological structure formation.…”
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4851“…We work out the phenomenology of a model of supersymmetry breaking in the presence of a tiny (tunable) positive cosmological constant, proposed by the authors in arXiv:1403.1534. …”
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4852“…These particles are considered in the context of cosmological models with the restrictions given by the observed mass spectrum of large scale structures, data on clusters of galaxies, age of the Universe etc.…”
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4853por Arbey, A“…We will show the importance of BBNwhen studying alternative cosmological scenarios and discuss the influence ofthe early Universe properties on the abundance of relic dark matter particles.…”
Publicado 2018
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4854“…Recently, a lot of attention has been paid to models populated by vector fields, given the interesting possibility of generating some level of statistical anisotropy in the cosmological perturbations. The scenario we propose is strongly motivated by the fact that, for non-Abelian gauge fields, self-interactions are responsible for generating extra terms in the cosmological correlation functions, which are naturally absent in the Abelian case. …”
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4855“…We analyze the behavior of the cosmological constant under these transformations. We also explore several examples of non-abelian duality where the classical background interpretation can be maintained for the original and the dual theories. …”
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4856por Blum, Kfir“…Session 5: Shedding light on dark matter with precision cosmology…”
Publicado 2016
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4857“…We discuss a string-theory-derived mechanism for localized gravity, which produces a deviation from Newton's law of gravitation at cosmological distances. This communication is based on the paper [1] (Non-compact Calabi-Yau manifolds and localized gravity) by Ruben Minasian and the present authors.…”
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4858“…We update constraints on the annihilation rate of DM particles in the smooth cosmological background, using WMAP7 and recent small-scale CMB data. …”
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4859por Kalaja, Alba, Bellomo, Nicola, Bartolo, Nicola, Bertacca, Daniele, Matarrese, Sabino, Musco, Ilia, Raccanelli, Alvise, Verde, Licia“…These updated constraints cover a range of scales not probed by other cosmological observables. Our results show that the correct and accurate modelling of non-linearities, filtering and typical perturbation profile, is crucial for deriving meaningful cosmological implications.…”
Publicado 2019
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4860“…One of the possible explanations of the so-called Cosmological Lithium Problem (CLIP), i.e., the large overestimate of the primordial$^7$Li abundance by the standard Big Bang Nucleosynthesis theory (BBN), is related to an incorrect underestimation of the 7 Be destruction rate by neutron-induced reactions. …”
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