In a examine revealed 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 relatively than the Huge Bang alone to elucidate the universe’s enlargement.
The brand new mannequin doesn’t require darkish matter or darkish power 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 also 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 exchange standard darkish matter and darkish power.
Dr. Richard Lieu, Professor, The College of Alabama in Huntsville
Dr. Lieu added, “Sir Fred Hoyle opposed Huge Bang cosmology and postulated a ‘regular state’ mannequin of the universe through which matter and power had been continuously being created because the universe expands. However that speculation violates the legislation of mass-energy conservation. Within the present concept, the conjecture is for matter and power to seem and disappear in sudden bursts and, curiously sufficient, there is no such thing as a violation of conservation legal guidelines.”
He acknowledged, “These singularities are unobservable as a result of they happen not often in time and are unresolvedly quick, and that might be the rationale why darkish matter and darkish power 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 Huge Bang itself.”
These singularities in house, as a substitute of darkish matter, generate “unfavourable strain,” a sort of power density just like darkish power that has a repulsive gravitational impression, forcing the universe to develop at an accelerated price.
“An instance is the unfavourable strain exerted by a magnetic discipline alongside a discipline line. Einstein additionally postulated unfavourable strain in his 1917 paper on the Cosmological Fixed. When optimistic mass-energy density is mixed with unfavourable strain, there are some restrictions which make sure the mass-energy density stays optimistic with respect to any uniformly transferring observer, so the unfavourable density assumption is averted within the new mannequin,” Dr. Lieu famous.
The title of Lieu’s newest examine, Are darkish matter and darkish power omnipresent?, suggests the researcher’s final conclusions.
He acknowledged, “They aren’t omnipresent – that means, not current always. They solely seem briefly cases throughout which the matter and power do fill your complete universe uniformly, other than random spatial density variations which develop to type certain constructions like galaxies. In between which they don’t seem to be to be discovered anyplace. 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 shall be observations made with earthbound devices relatively 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 discipline observations, the information of which might be ‘sliced’ based on redshift. Given enough redshift (or, equivalently, time) decision effected by the redshift slicing, one may simply discover that the Hubble diagram displays jumps within the redshift distance relation, which might be very revealing.”
Journal Reference:
Lieu, R. (2025) Are darkish matter and darkish power omnipresent? Classical and Quantum Gravity. doi.org/10.1088/1361-6382/adbed1
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