• physical cosmology, cosmological perturbation theory is the theory by which the evolution of structure is understood in the Big Bang model. Cosmological perturbation...
    15 KB (2,050 words) - 03:46, 27 May 2025
  • In mathematics and applied mathematics, perturbation theory comprises methods for finding an approximate solution to a problem, by starting from the exact...
    22 KB (2,959 words) - 12:02, 24 May 2025
  • Thumbnail for Physical cosmology
    Physical cosmology is a branch of cosmology concerned with the study of cosmological models. A cosmological model, or simply cosmology, provides a description...
    77 KB (7,679 words) - 07:19, 2 June 2025
  • Thumbnail for Big Bang
    Big Bang (redirect from Big Bang theory)
    is a physical theory that describes how the universe expanded from an initial state of high density and temperature. Various cosmological models based...
    150 KB (15,949 words) - 15:18, 4 June 2025
  • Newtonian gauge (category Physical cosmology)
    in the universe in cosmological perturbation theory. The vector perturbations vanish in cosmic inflation and the tensor perturbations are gravitational...
    3 KB (448 words) - 06:11, 28 May 2025
  • Scalar–vector–tensor decomposition (category Physical cosmology)
    In cosmological perturbation theory, the scalar–vector–tensor decomposition is a decomposition of the most general linearized perturbations of the...
    5 KB (838 words) - 18:59, 27 May 2025
  • Dmitriy Tseliakhovich, he pointed to an unprecedented effect in cosmological perturbation theory for the calculation of the formation of the first structures...
    6 KB (582 words) - 18:14, 19 September 2024
  • Thumbnail for Chronology of the universe
    evolution of the universe could be understood through linear cosmological perturbation theory: that is, all structures could be understood as small deviations...
    110 KB (10,647 words) - 03:35, 31 May 2025
  • Thumbnail for Nathalie Deruelle
    research on the two-body problem in general relativity and on cosmological perturbation theory. Deruelle began her studies at the École normale supérieure...
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  • Thumbnail for Viatcheslav Mukhanov
    consistent quantum cosmological perturbation theory. Since 2006, Mukhanov is the Scientific Director of the Journal of Cosmology and Astroparticle Physics...
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  • Thumbnail for Inhomogeneous cosmology
    More unsolved problems in physics An inhomogeneous cosmology is a physical cosmological theory (an astronomical model of the physical universe's origin...
    26 KB (3,098 words) - 20:21, 3 June 2025
  • and studied at the University of Zürich. She completed her PhD on perturbation theory with Norbert Straumann at the University of Zürich in 1988. She was...
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  • Thumbnail for Cosmic inflation
    In physical cosmology, cosmic inflation, cosmological inflation, or just inflation, is a theory of exponential expansion of space in the very early universe...
    107 KB (12,756 words) - 19:02, 4 June 2025
  • University Press 1990). C.-P. Ma and E. Bertschinger (1995). "Cosmological perturbation theory in the synchronous and conformal Newtonian gauges". Astrophys...
    9 KB (1,166 words) - 23:25, 28 October 2023
  • relativistic astrophysics. He has made substantial contributions to cosmological perturbation theory and structure formation in the universe. Bertschinger, Edmund;...
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  • Thumbnail for Cosmological constant
    In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: Λ), alternatively called Einstein's cosmological constant...
    50 KB (5,785 words) - 04:14, 14 May 2025
  • Thumbnail for List of cosmologists
    (1956–) formulated the theory of string gas cosmology, with colleague Cumrun Vafa, and developed cosmological perturbation theory Bernard J. Carr (1949–)...
    20 KB (2,499 words) - 17:34, 16 September 2024
  • Thumbnail for Cosmic microwave background
    Cosmic microwave background (category Physical cosmological concepts)
    Fluctuations in the energy spectrum of the microwave background Cosmological perturbation theory – theory by which the evolution of structure is understood in the...
    108 KB (13,200 words) - 03:59, 2 June 2025
  • Thumbnail for Quantum gravity
    to the cosmological constant are among the current unsolved mysteries regarding gravity, all of which signal the collapse of the general theory of relativity...
    54 KB (5,955 words) - 05:29, 31 May 2025
  • to study the universe. He studied theoretical cosmology, in particular cosmological perturbation theory, at graduate school at the University of Florida...
    19 KB (1,613 words) - 21:21, 9 May 2025
  • each with a different value of the cosmological constant, and observations indicate a small value of the cosmological constant only because humans happen...
    122 KB (15,295 words) - 05:10, 31 May 2025
  • theoryPerturbation theory — Potential theory — Probability theory — Ramsey theory — Rational choice theory — Representation theory — Ring theory —...
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  • readily described by the expanding cosmological solutions found by Friedmann in 1922, which do not require a cosmological constant. Lemaître used these solutions...
    194 KB (22,692 words) - 07:19, 2 June 2025
  • study is brane cosmology. This approach can be dated back to a paper by Gabriele Veneziano that shows how an inflationary cosmological model can be obtained...
    10 KB (1,534 words) - 19:46, 25 May 2025
  • universe, cosmological perturbation theory, and cosmic 21-cm fluctuations. In 2010, he co-authored a paper proposing the theory of hylogenesis, a theory of the...
    4 KB (367 words) - 09:26, 19 March 2023
  • Thumbnail for Structure formation
    Structure formation (category Physical cosmological concepts)
    Dodelson, Scott (2003). Modern Cosmology. Academic Press. ISBN 978-0-12-219141-1. Liddle, Andrew; David Lyth (2000). Cosmological Inflation and Large-Scale...
    17 KB (2,162 words) - 17:10, 5 March 2025
  • Primordial fluctuations (category Physical cosmology)
    cold dark matter modes to be small. Physics portal Big Bang Cosmological perturbation theory Cosmic microwave background spectral distortions Press–Schechter...
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  • Thumbnail for Dark matter
    locations of these peaks depend on cosmological parameters. Matching theory to data, therefore, constrains cosmological parameters. The CMB anisotropy was...
    138 KB (15,043 words) - 00:07, 5 June 2025
  • Thumbnail for Cosmological principle
    galaxies, as a result of applying the cosmological principle to general relativity. Karl Popper criticized the cosmological principle on the grounds that it...
    31 KB (3,639 words) - 03:03, 5 June 2025
  • Thumbnail for Lambda-CDM model
    relativity is the correct theory of gravity on cosmological scales. It emerged in the late 1990s as a concordance cosmology, after a period when disparate...
    93 KB (10,930 words) - 06:34, 2 June 2025