Search Results - particle cosmology
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Cosmological tests of coupled Galileons
Published 2015“…We consider the background cosmology of Galileon models coupled to Cold Dark Matter (CDM), photons and baryons and impose that the speed of light and particle masses respect the observational bounds on cosmological time scales. …”
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Cosmological consequences of coupled quintessence
Published 2019“…Understanding the cause of the observed accelerating expansion of the universe is one of the most pressing problems in cosmology. To this end, I investigate two classes of dark energy models and their cosmological implications. …”
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FeynMG: Automating particle physics calculations in scalar-tensor theories
Published 2023Subjects: “…Cosmology…”
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Dynamics of early & late universe cosmology
Published 2018“…In this thesis we discuss two key problems: the cosmological constant problem (CCP), an issue that primarily manifests itself in late universe cosmology; and the process of thermalisation during the post-inflationary reheating phase of the early universe. …”
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Black holes and galaxy environment in cosmological simulations
Published 2013“…The final project involved implementing the Accretion Disc Particle (ADP) model of black hole growth within a cosmological, large volume simulation, including cooling, star formation and feedback. …”
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Aspects of de Sitter Vacua in Theoretical Cosmology
Published 2025“…In Part II we study the de Sitter vacua solutions in one string cosmology model, namely, O(d, d) invariant cosmology. …”
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Planck 2015 results. XIII. Cosmological parameters
Published 2016“…This paper presents cosmological results based on full-mission Planck observations of temperature and polarization anisotropies of the cosmic microwave background (CMB) radiation. …”
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Suite of hydrodynamical simulations for the Lyman-alpha forest with massive neutrinos
Published 2014“…In addition, our simulations can be useful for a broader variety of cosmological and astrophysical applications, ranging from the three-dimensional modeling of the Lyα forest to cross-correlations between different probes, studying the expansion history of the Universe including massive neutrinos, and particle-physics related topics. …”
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New approach for precise computation of Lyman-alpha forest power spectrum with hydrodynamical simulations
Published 2014“…Their interpretation in terms of cosmological constraints requires specific simulations of at least equivalent precision. …”
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nIFTy galaxy cluster simulations – I. Dark matter and non-radiative models
Published 2016“…The various GADGET implementations span classic and modern smoothed particle hydrodynamics (SPH) schemes. The goal of this comparison is to assess the reliability of cosmological hydrodynamical simulations of clusters in the simplest astrophysically relevant case, that in which the gas is assumed to be non-radiative. …”
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Energy Eigenequation Expansion for a Particle on Singly Punctured Two-Torus and Triply Punctured Two-Sphere Systems
Published 2008“…These surfaces may find applications in to mathematical models of quantum chaos, cosmology, particle physics, condensed matter, quantum gravity and string theory. …”
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Solving the puzzle of subhalo spins
Published 2015“…To further examine this puzzle, we have analyzed simulations of a cosmological volume with sufficient resolution to resolve a significant subhalo population. …”
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Cosmic CARNage I: on the calibration of galaxy formation models
Published 2018“…We present a comparison of nine galaxy formation models, eight semi-analytical, and one halo occupation distribution model, run on the same underlying cold dark matter simulation (cosmological box of comoving width 125h−1 Mpc, with a dark-matter particle mass of 1.24 × 109h−1M ) and the same merger trees. …”
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Classical and Quantum Causality in Quantum Field Theory, or, "The Quantum Universe"
Published 2004“…A pregeometric vision of cosmology is therefore discussed, with all of physics ultimately arising from the relationships occurring between the elements of the underlying mathematical structure. …”
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Sequestering the standard model vacuum energy
Published 2014“…If this matter is the standard model of particle physics, our mechanism prevents any of its vacuum energy, classical or quantum, from sourcing the curvature of the Universe. …”
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