enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Baryon asymmetry - Wikipedia

    en.wikipedia.org/wiki/Baryon_asymmetry

    Neither the standard model of particle physics nor the theory of general relativity provides a known explanation for why this should be so, and it is a natural assumption that the universe is neutral with all conserved charges. [3] The Big Bang should have produced equal amounts of matter and antimatter. Since this does not seem to have been ...

  3. Baryogenesis - Wikipedia

    en.wikipedia.org/wiki/Baryogenesis

    This imbalance has to be exceptionally small, on the order of 1 in every 1 630 000 000 (≈ 2 × 10 9) particles a small fraction of a second after the Big Bang. [4] After most of the matter and antimatter was annihilated, what remained was all the baryonic matter in the current universe, along with a much greater number of bosons.

  4. Flatness problem - Wikipedia

    en.wikipedia.org/wiki/Flatness_problem

    The local geometry of the universe is determined by whether the relative density Ω is less than, equal to or greater than 1. From top to bottom: a spherical universe with greater than critical density (Ω>1, k>0); a hyperbolic, underdense universe (Ω<1, k<0); and a flat universe with exactly the critical density (Ω=1, k=0). The spacetime of ...

  5. Here’s why the universe has more matter than antimatter - AOL

    www.aol.com/why-universe-more-matter-antimatter...

    All the particles that make up the matter around us, such electrons and protons, have antimatter versions which are nearly identical, but with mirrored properties such as the opposite electric charge.

  6. Leptogenesis - Wikipedia

    en.wikipedia.org/wiki/Leptogenesis

    Why does the observable universe have more matter than antimatter? (more unsolved problems in physics) In physical cosmology , leptogenesis is the generic term for hypothetical physical processes that produced an asymmetry between leptons and antileptons in the very early universe , resulting in the present-day dominance of leptons over ...

  7. Tara Shears - Wikipedia

    en.wikipedia.org/wiki/Tara_Shears

    Shears became the first female Professor of Physics at the University of Liverpool, where she researches the properties of bottom quarks using hadron colliders, testing the Standard Model theory in the electroweak sector, to seek answers for the reasons that there is so little antimatter in the universe.

  8. Right again, Einstein! Study shows how antimatter ... - AOL

    www.aol.com/news/again-einstein-study-shows...

    Under current theory, the Big Bang explosion that initiated the universe should have produced equal amounts of matter and antimatter. This, however, does not seem to be the case.

  9. Multiverse - Wikipedia

    en.wikipedia.org/wiki/Multiverse

    There are models of two related universes that e.g. attempt to explain the baryon asymmetry – why there was more matter than antimatter at the beginning – with a mirror anti-universe. [78] [79] [80] One two-universe cosmological model could explain the Hubble constant (H 0) tension via interactions between the two worlds. The "mirror world ...