Cosmology

• Einstein’s theory of gravity — general relativity — has been very successful for more than a century.
• This is not surprising: the theory predicts its own failure at spacetime singularities inside black holes — and the Big Bang itself.

Deviations and quantum mechanics

• These signal that Einstein’s theory is failing there and must be replaced with a more fundamental one.
• Naively, spacetime singularities should be resolved by quantum mechanics, which apply at very small scales.
• This is enough to understand that a theory that embraces both general relativity and quantum physics should be free of such pathologies.
• However, all attempts to blend general relativity and quantum physics necessarily introduce deviations from Einstein’s theory.

Cosmology matters

• A century of research has given us the standard model of cosmology known as the Λ-Cold Dark Matter (ΛCDM) model.
• Here, Λ stands for either Einstein’s famous cosmological constant or a mysterious dark energy with similar properties.
• Dark energy was introduced ad hoc by astronomers to explain the acceleration of the cosmic expansion.
• Despite fitting cosmological data extremely well until recently, the ΛCDM model is spectacularly incomplete and unsatisfactory from the theoretical point of view.

Alternatives to Einstein’s theory

• That we are observing the first deviations from general relativity while the mysterious dark energy simply does not exist?
• This idea, first proposed by researchers at the University of Naples, has gained tremendous popularity while the contending dark energy camp remains vigorous.
• A very popular class of alternatives is the so-called scalar-tensor gravity.

The current situation

• Theorists have spent the last decade extracting physical consequences from these theories.
• The recent detections of gravitational waves have provided a way to constrain the physical class of modifications of Einstein gravity allowed.

• "The accepted theory states that the universe is three-dimensionally flat, meaning it does not curve even at infinitely large distances.
• "The advent and understanding of quantum mechanics itself has led to remarkable technological advancement, and a unifying all-encompassing "Theory of Everything" would indubitably open numerous new unthought of technological pathways," concludes Mr. Waugh.
• Title of original paper: Quantum Mechanics and General Relativity are fully compatible, and have a common origin: the expanding (hyper) balloon universe.
• His research interests include unifying Physics and Cosmology into a single Theory of Everything and unveiling the leftover mysteries of our universe.

• LIQID Inc., one of the worlds leading software companies delivering data center composability, announced today a new case study with Durham University in Durham, England, describing its deployment of Liqid composable disaggregated infrastructure (CDI) software.
• Durham University chose Liqid Matrix software-based composable system in order to be able to share and scale GPUs in the exact amounts required for any given workload.
• Durham University IT is also deploying Liqid Matrix-based systems as an element of its overall strategy for a more sustainable IT ecosystem.
• Liqids composable infrastructure software platform, Liqid Matrix , unlocks cloud-like speed and flexibility plus higher efficiency from on-prem infrastructure.

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