Results 201 to 210 of about 973 (226)

Ferroelectric Topological Defects in Hexagonal Manganites. [PDF]

Materials (Basel)
Gao Z, Cheong SW, Wang X.
europepmc   +1 more source

On the Fourier Analysis of the Einstein-Klein-Gordon System: Growth and Decay of the Fourier Constants. [PDF]

Ann Henri Poincare
Chatzikaleas A.
europepmc   +1 more source

Synchronizations in Complex Systems Dynamics Through a Multifractal Procedure. [PDF]

Entropy (Basel)
Ghizdovat V, Mirila DC, Nedeff F, Rusu DI, Rusu O, Agop M, Vasincu D.   +6 more
europepmc   +1 more source

Conformal methods in mathematical cosmology. [PDF]

Philos Trans A Math Phys Eng Sci
Tod P.
europepmc   +1 more source

First measurement of the Weyl potential evolution from the Year 3 Dark Energy Survey data: Localising the σ8 tension

Bonvin C, Tutusaus I, Grimm N.
europepmc   +1 more source

Gravitational waves from dark domain walls

Christiansen Ø, Adamek J, Hassani F, Mota DF.   +3 more
europepmc   +1 more source

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Cosmological perturbations

2018
Abstract This chapter describes the first steps toward an understanding of large structures, which are observed in the universe at all scales—galaxies, groups of galaxies, and galactic clusters. It does so by studying the evolution of perturbations at linear order in Friedmann–Lemaître spacetimes.
Nathalie Deruelle, Jean-Philippe Uzan
exaly   +3 more sources

Effective speed of cosmological perturbations

Physics of the Dark Universe
The first version of this paper was submitted to JCAP on February 7th 2023, and the first report was received on January 14th 2024.
Antonio Enea Romano
exaly   +3 more sources

Cosmological perturbations of a relativistic condensate

Physical Review D, 1995
Based on a model of the early Universe with a relativistic Bose-Einstein condensate as the source of inflationary expansion, we calculate the gauge-invariant measure of the cosmological density perturbations caused by the zero-point fluctuations and excitations of the condensate.
, Parker, , Zhang
openaire   +2 more sources

COSMOLOGICAL PERTURBATIONS: MYTHS AND FACTS

Modern Physics Letters A, 2004
We discuss (and debunk) ten common myths about cosmological perturbations in inflationary and ekpyrotic/cyclic models and their implications for future observations.
openaire   +2 more sources