Results 131 to 140 of about 4,095 (225)

Geometrothermodynamic Cosmology. [PDF]

Entropy (Basel), 2023
Luongo O, Quevedo H.
europepmc   +1 more source

On inflation and torsion in cosmology

, 2005
In a recent letter by H. Davoudiasl, R. Kitano, T. Li and H. Murayama ``The new Minimal Standard Model'' (NMSM) was constructed that incorporates new physics beyond the Minimal Standard Model (MSM) of particle physics. The authors follow the principle of minimal particle content and therefore adopt the viewpoint of particle physicists. It is shown that
openaire   +2 more sources

Early inflation and cosmology in theories with submillimeter dimensions

, 1999
We discuss early cosmology in theories where the fundamental Planck mass is close to the TeV scale. In such theories the standard model fields are localized to a (3+1)-dimensional wall with n new transverse sub-millimeter sized spatial dimensions.
Arkani-Hamed, Nima, March-Russell, J, Dimopoulos, Savas, Kaloper, N, Nima Arkani-Hamed, Arkani-Hamed, N, Dimopoulos, S, March-Russell, John, Nemanja Kaloper, Savas Dimopoulos, John March-Russell, Kaloper, Nemanja   +11 more
core   +1 more source

Stability Properties of Geometrothermodynamic Cosmological Models. [PDF]

Entropy (Basel), 2023
Beissen N, Abishev M, Khassanov M, Aitassov T, Mamatova S, Toktarbay S.   +5 more
europepmc   +1 more source

Eternal Inflation and the Hermeneutics of the Infinite: Interpreting Cosmology at the Edge of Meaning

Философия и космология
The theory of eternal inflation — according to which our observable universe is just one bubble within an endlessly self-replicating multiverse — presents not only a physical but also a hermeneutic challenge.
Heitor Matallo Jr1
doaj   +1 more source

Time Scales of Slow-Roll Inflation in Asymptotically Safe Cosmology

Making use of the well-known renormalization group (RG) scale dependences of the gravitational couplings in the framework of the two-parameter Einstein–Hilbert (EH) theory of gravity, the single scalar field-driven cosmological inflation is ...
Kornél Sailer, József Nagy, Sándor Nagy   +2 more
core   +1 more source

A bouncing cosmology from VECROs. [PDF]

Eur Phys J C Part Fields, 2023
Brandenberger R, Mitchell GA.
europepmc   +1 more source

Unitarity problems for an effective field theory description of early universe cosmology. [PDF]

Eur Phys J C Part Fields, 2022
Brandenberger R, Kamali V.
europepmc   +1 more source

A step in flux to suppress axion isocurvature

Journal of High Energy Physics
The QCD axion in the pre-inflation scenario faces a stringent isocurvature constraint, which requires a relatively low Hubble scale during inflation. If the axion was heavier than the Hubble scale during inflation, its isocurvature is suppressed and the ...
Priyesh Chakraborty, Junyi Cheng, Matthew Reece, Zekai Wang   +3 more
doaj   +1 more source

Novel Possibility of Nonstandard Statistics in the Inflationary Spectrum of Primordial Inhomogeneities

Symmetry, Integrability and Geometry: Methods and Applications, 2012
Inflation is considered one of the cornerstones of modern cosmology. However, the account of the origin of cosmic structure, as provided by the standard inflationary paradigm, is not fully satisfactory. The fundamental issue is the inability of the usual
Gabriel León, Daniel Sudarsky
doaj   +1 more source