“…One of the decay products may constitute the dark matter known to be 84% of all matter at galactic and cosmological distance scales. Our method uses graph computing to cluster spacepoints recorded by two-dimensional silicon pixel sensors into mathematically-defined patterns. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…Viewed from this perspective, narratives not only explain, but also mediate two ways of understanding time, phenomenological and cosmological, by weaving experienced time and natural time together. …”
Enlace del recurso
Enlace del recurso
Enlace del recurso

“…We study the effects of coupling a cosmologically rolling scalar field to higher order curvature terms. …”
Enlace del recurso
Enlace del recurso

“…We analyse the theoretical and phenomenological conditions required for tau flavour violation to be observable in \chi_2 \to \chi + \tau^\pm \mu^\mp decays, for cosmologically interesting values of the relic neutralino LSP density. …”
Enlace del recurso
Enlace del recurso

“…This review requires basic knowledge of the theory of cosmological perturbations at the linear level.…”
Enlace del recurso
Enlace del recurso

“…Excursion set theory, where density perturbations evolve stochastically with the smoothing scale, provides a method for computing the mass function of cosmological structures like dark matter halos, sheets and filaments. …”
Enlace del recurso
Enlace del recurso

“…While the energy loss caused by this mechanism on the primary cosmic rays is negligible, we investigate the hypothetical detection of the photons radiated and how they could provide an indirect way of verifying the cosmological relevance of axions. Assuming that the cosmic ray flux is of the form J(E)~ E^-g we find that the energy radiated follows a distribution k^-((g-1)/2) for proton primaries, identical to the Galaxy synchrotron radiation that is the main background, and k^-(g/2) for electron primaries, which in spite of this sharper decay provide the dominant contribution in the low-energy spectrum. …”
Enlace del recurso
Enlace del recurso

“…We study the possibility to constrain deviations from Lorentz invariance in dark matter (DM) with cosmological observations. Breaking of Lorentz invariance generically introduces new light gravitational degrees of freedom, which we represent through a dynamical timelike vector field. …”
Enlace del recurso
Enlace del recurso

“…In this paper we present a fully calculable model which produces the baryonic asymmetry along these lines as well as evades all the existing cosmological constraints. We emphasize that the Gravitational Waves signal from the first order phase transition is completely generic and can potentially be detected by the future eLISA interferometer. …”
Enlace del recurso
Enlace del recurso

“…Since secluded hidden sectors are of particular interest for dark matter models at the MeV scale or below, we pay special attention to the reach of pulsar timing arrays. Cosmological constraints on light degrees of freedom restrict the number of sub-MeV particles in a hidden sector, as well as the hidden sector temperature. …”
Enlace del recurso
Enlace del recurso

“…These experiments can leverage the large center of mass energy of the LHC to produce GeV-scale dark matter from the decays of dark photons in the cosmologically motivated mass range of ∼1–100  GeV. We also provide a detailed calculation of the radiative dark matter-nucleon/electron elastic scattering cross section, which is relevant for estimating rates at direct detection experiments.…”
Enlace del recurso
Enlace del recurso

“…We discuss recent developments made in addressing the uniqueness of the path-integral measure of the VDW effective action, and so address the problem of quantum frame dependence in cosmologically relevant scalar-tensor theories beyond the classical approximation. …”
Enlace del recurso
Enlace del recurso

“…We find that the degree of disc tilting can be large for cosmologically motivated merger histories. In particular, our results suggest that the Galactic disc may still be tilting in response to Gaia-Sausage-Enceladus, one of the most significant recent mergers in the Milky Way’s history. …”
Enlace del recurso
Enlace del recurso

“…We consider the effects of strong gravitational lensing by galaxy-scale deflectors on the observations of high-energy (<math display="inline"><mi mathvariant="normal">E</mi><mo>≫</mo><mi>GeV</mi></math>) neutrinos (HENs). For HENs at cosmological distances, the optical depth for multiple imaging is <math display="inline"><mo>∼</mo><msup><mn>10</mn><mrow><mo>-</mo><mn>3</mn></mrow></msup></math>, implying that while we do not expect any multiply imaged HENs with present samples, next-generation experiments should be able to detect the first such event. …”
Enlace del recurso
Enlace del recurso

“…Under the assumption that the dark states <math display="inline"><mi>V</mi></math> constitute dark matter, the bounds are then complemented by direct and indirect detection as well as cosmological limits. The relic density from freeze-out and freeze-in mechanisms is also computed. …”
Enlace del recurso
Enlace del recurso

“…These include sub-eV axion-like particle search through the axion-photon coupling, the cosmological consistency of a large decay constant QCD axion, and a model for the observed cosmic birefringence.…”
Enlace del recurso
Enlace del recurso

“…We show that the model can resolve cosmological problems and provide a mechanism for structure formation with very little fine tuning.…”
Enlace del recurso
Enlace del recurso

“…We discuss possible implications of this for the survival of Dp-branes with large values of p in an early cosmological Hagedorn regime. We also discuss the general phase diagram of the interacting theory, as implied by the holographic and black-hole/string correspondence principles.…”
Enlace del recurso
Enlace del recurso

“…In particular, we present concrete cosmological scenarios where the reheating temperature is as small as $\cal{O}$ $1 - 1000$ MeV). …”
Enlace del recurso
Enlace del recurso

“…Some of our examples appear to be stable from the bulk point of view, suggesting the possible existence of stable bouncing cosmologies within the brane-world framework.…”
Enlace del recurso
Enlace del recurso