Repulsive gravity as an alternative to dark energy

“(PhysOrg.com) — During the past few years, CERN physicist Dragan Hajdukovic has been investigating what he thinks may be a widely overlooked part of the cosmos: the quantum vacuum. He suggests that the quantum vacuum has a gravitational charge stemming from the gravitational repulsion of virtual particles and antiparticles. Previously, he has theoretically shown that this repulsive gravity can explain several observations, including effects usually attributed to dark matter. Additionally, this additional gravity suggests that we live in a cyclic Universe (with no Big Bang) and may provide insight into the nature of black holes and an estimate of the neutrino mass. In his most recent paper, published in Astrophysics and Space Science, he shows that the quantum vacuum could explain one more observation: the Universe’s accelerating expansion, without the need for dark energy.”
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“The series of publications shows that the quantum vacuum, enriched
with the hypothesis of the negative gravitational charge for antiparticles, has the potential to explain the observed phenomena in astrophysics and cosmology without invoking dark matter
and dark energy and mysterious mechanisms for inflation and
matter-antimatter asymmetry,” Hajdukovic said. “If antimatter really has
negative gravitational charge (which could be revealed by the AEGIS
experiment at CERN), the above papers have started a new scientific
revolution. But the papers are important even if antimatter has no
negative gravitational charge, because they encourage reconsidering the
quantum vacuum as a key for the understanding of the Universe.”

In addition to the AEGIS experiment in CERN,
which is designed to reveal the gravitational properties of
antihydrogen, Hajdukovic said that other experiments are also
investigating the gravitational properties of antimatter. For instance,
physicists at the University of California, Riverside, have recently
begun studying the gravitational properties of positronium (an
electron-positron pair).

Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)

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