Origin of Cosmic Acceleration: Models of Dark Energy, Modified Gravity and Their Observation Probes
ENVIRONMENTAL EFFECTS IN MODIFIED GRAVITY MODELS
... vacuum energy has several possible values, namely zero, which is too small, or possibly on the order of the planck scale, in which case it is off by about 120 orders of magnitude from the observed value, a third ...
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Interacting and Non-Interacting Holographic Gas Model of Dark energy in f(G) Gravity
... fundamental cosmic issues, like inflation, late-time acceleration, bouncing cosmology and claimed that some modified theories of gravity, like f (R ) , f (G ) and f (T ) theories (where T is ...
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Bianchi Type I ( Kasner form) Cosmological models with Perfect Fluid and Dark Energy in Modified Theory of Gravity
... time acceleration in the enlargement average of our ...total energy density of the universe has a large negative pressure which is apparently unclustered and is dubbed as Dark energy (DE), ...
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Beyond the growth rate of cosmic structure: testing modified gravity models with an extra degree of freedom
... ‘modified’ gravity the observed acceleration of the universe is explained by changing the gravi- tational force law or the number of degrees of freedom in the gravitational ...of modified ...
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On a Quantum Gravity Fractal Spacetime Equation: QRG ≃ HD + FG and Its Application to Dark Energy—Accelerated Cosmic Expansion
... accurate cosmic measurements and observations connected to the famous COBE, WMAP and Type 1a Supernova [33] [39] which was awarded the Nobel Prize in Physics or Cosmology in ...ordinary energy density while ...
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Gravity vs Dark Energy, about the Expansion of the Universe
... Dark energy is argued by the accelerating expansion of the Universe but has not been directly ...the Gravity would slightly slow down the motion of ...
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A THERMODYNAMIC APPROACH TOWARDS UNDERSTANDING THE DARK UNIVERSE
... nucleosynthesis, dark energy (V) and spaceons (gas) ...formation. Dark matter is not yet indicated since its nature remains ...end), dark energy overlaps with the cold ...
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Large Scale Cosmic Microwave Background Anisotropies and Dark Energy
... the dark energy is not a cosmological constant, gen- eral relativity predicts that there will be ...if dark energy is expected to be relatively smooth, for a con- sistent description of CMB ...
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Measuring Cosmic Acceleration And Constraining Dark Energy Models With Transients Discovered In The Dark Energy Survey
... electron energy distribution inferred from the radio+X-ray data modeling discussed in M17 and in A17 is better de- scribed by a shallow power-law (index p ∼ ...
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A Topological Magueijo Smolin Varying Speed of Light Theory, the Accelerated Cosmic Expansion and the Dark Energy of Pure Gravity
... register dark energy is the wave collapse on ...harness dark energy and that is quantum non-demolition technology [21] ...that dark energy seems to be, theoretically speaking, a ...
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Dark Energy and Dark Matter from Emergent Gravity Picture
... emergent gravity and spacetime recently activated by the AdS / CFT correspondence advocates that spacetime is not a fundamental entity existed from the beginning but an emergent prop- erty from a primal monad such ...
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Clues to the Fundamental Nature of Gravity, Dark Energy and Dark Matter
... zero energy pre-Big Bang state kicked off the universal ...that gravity was the first of four fundamental forces to “freeze out” following an exceedingly brief exponential inflationary ...negative ...
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Intrinsic Nature of Dark Matter in the Galactic Halo
... Keywords: galaxies: modified gravity; dark matter; halos; flat rotation curves.. 12.[r] ...
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Cosmic ray acceleration to ultrahigh energy in radio galaxies
... for acceleration. It has been shown by various authors that acceleration to ultrahigh en- ergies is problematic in relativistic shocks [20, 22, ...less energy available to drive turbulence on large ...
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Do We Need Dark Energy to Explain the Cosmological Acceleration?
... or dark energy problem. The arguments leading to dark energy are dis- cussed in detail in Section ...cosmological acceleration can be easily and naturally explained from first ...
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Equivalence between a Gravity Field and an Unruh Acceleration Temperature Field as a Possible Clue to “Dark Matter”
... of dark matter, including how it revises the Standard Particle Model, have failed in this ...of gravity in order to explain the aberrant galactic ...of Modified Newtonian Dynamics (MOND) has met with ...
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Theoretical Studies of Cosmic Acceleration
... the origin of nearly scale-invariant temperature fluctuations observed in the cosmic microwave back- ground is that the early universe underwent a period of exponentially accelerated expansion called ...
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FinalReviewPacket
... What is the equation relating gravitational potential energy to mass and height (and the constant acceleration of gravity)?. What is the potential energy of a 1000kg car on top of a 100[r] ...
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1709.04388.pdf
... fundamental origin of dark matter is tied to the thermal properties associated with gravity in the context of effective quantum field theory in curved ...the dark matter and visible, baryonic ...
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Ultra High Energy Cosmic Rays: Origin, Composition and Spectrum
... (CMB, Cosmic Microwave Background, and EBL, Extragalactic Background Light) shape the spectrum of UHECR observed at the Earth and are also responsible for the production of secondary (cosmogenic) particles: ...
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