In a research printed within the journal Classical and Quantum Gravity, Dr. Richard Lieu, a physics professor at The College of Alabama in Huntsville (UAH), which is part of The College of Alabama System, means that the universe was shaped on the steps of a number of singularities moderately than the Massive Bang alone to elucidate the universe’s enlargement.
The brand new mannequin doesn’t require darkish matter or darkish vitality to elucidate the enlargement of the cosmos or the formation of constructions like galaxies.
The researcher’s work expands on an earlier mannequin that hypothesized gravity may persist with out mass.
This new paper proposes an improved model of the sooner mannequin, which can be radically totally different. The brand new mannequin can account for each construction formation and stability, and the important thing observational properties of the enlargement of the universe at giant, by enlisting density singularities in time that uniformly have an effect on all house to switch typical darkish matter and darkish vitality.
Dr. Richard Lieu, Professor, The College of Alabama in Huntsville
Dr. Lieu added, “Sir Fred Hoyle opposed Massive Bang cosmology and postulated a ‘regular state’ mannequin of the universe by which matter and vitality have been continually being created because the universe expands. However that speculation violates the legislation of mass-energy conservation. Within the present idea, the conjecture is for matter and vitality to look and disappear in sudden bursts and, apparently sufficient, there isn’t a violation of conservation legal guidelines.”
He said, “These singularities are unobservable as a result of they happen hardly ever in time and are unresolvedly quick, and that may very well be the explanation why darkish matter and darkish vitality haven’t been discovered. The origin of those temporal singularities is unknown – protected to say that the identical is true of the second of the Massive Bang itself.”
These singularities in house, as an alternative of darkish matter, generate “damaging stress,” a sort of vitality density just like darkish vitality that has a repulsive gravitational impression, forcing the universe to develop at an accelerated fee.
“An instance is the damaging stress exerted by a magnetic area alongside a area line. Einstein additionally postulated damaging stress in his 1917 paper on the Cosmological Fixed. When constructive mass-energy density is mixed with damaging stress, there are some restrictions which make sure the mass-energy density stays constructive with respect to any uniformly shifting observer, so the damaging density assumption is prevented within the new mannequin,” Dr. Lieu famous.
The title of Lieu’s newest research, Are darkish matter and darkish vitality omnipresent?, suggests the researcher’s final conclusions.
He said, “They aren’t omnipresent – that means, not current always. They solely seem in short situations throughout which the matter and vitality do fill your entire universe uniformly, other than random spatial density variations which develop to kind certain constructions like galaxies. In between which they don’t seem to be to be discovered wherever. The one distinction between this work and the usual mannequin is that the temporal singularity occurred solely as soon as within the latter, however greater than as soon as within the former.”
Trying forward, Lieu believes the following step in confirming his mannequin of the universe will probably be observations made with earthbound devices moderately than one thing just like the James Webb Area Telescope.
The researcher famous, “The easiest way to search for the proposed impact is definitely to make use of a big ground-based telescope – just like the Keck Observatory [Waimea, Hawaii], or the Isaac Newton Group of Telescopes in La Palma, Spain – to carry out deep area observations, the information of which might be ‘sliced’ in accordance with redshift. Given adequate redshift (or, equivalently, time) decision effected by the redshift slicing, one may simply discover that the Hubble diagram reveals jumps within the redshift distance relation, which might be very revealing.”
Journal Reference:
Lieu, R. (2025) Are darkish matter and darkish vitality omnipresent? Classical and Quantum Gravity. doi.org/10.1088/1361-6382/adbed1
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