Philiph Perry/ bigthink.com

Dr. Melvin Vopson of the University of Portsmouth, in the UK, has a hypothesis he calls the mass-energy-information equivalence.** It states that information is the fundamental building block of the universe, and it has mass.** This accounts for the missing mass within galaxies, thus eliminating the hypothesis of dark matter entirely.

### Information theory

To be clear, the idea that information is an essential building block of the universe isn’t new. Classical Information Theory was first posited by Claude Elwood Shannon, the “father of the digital age” in the mid-20th century. The mathematician and engineer, well-known in scientific circles—but not so much outside of them, had a stroke of genius back in 1940. He realized that Boolean algebra coincided perfectly with telephone switching circuits. Soon, he proved that mathematics could be employed to design electrical systems.

Shannon was hired at Bell Labs to figure out how to transfer information over a system of wires. He wrote the bible on using mathematics to set up communication systems, thereby laying the foundation for the digital age. Shannon was also the first to define one unit of information as a bit.

There was perhaps no greater proponent of information theory than another unsung paragon of science, John Archibald Wheeler. Wheeler was part of the Manhattan Project, worked out the “S-Matrix” with Niels Bohr and helped Einstein develop a unified theory of physics. In his later years, he proclaimed, “Everything is information.” Then he went about exploring connections between quantum mechanics and information theory.

He also coined the phrase “it from bit” or that every particle in the universe emanates from the information locked inside it. At the Santa Fe Institute in 1989, Wheeler announced that everything, from particles to forces to the fabric of spacetime itself “… derives its function, its meaning, its very existence entirely … from the apparatus-elicited answers to yes-or-no questions, binary choices, bits.”

### Part Einstein, part Landauer

Vopson takes this notion one step further. He says that not only is information the essential unit of the universe but also that it is energy and has mass. To support this claim, he unifies and coordinates special relativity with the Landauer Principle. The latter is named after Rolf Landauer. In 1961, he predicted that erasing even one bit of information would release a tiny amount of heat, a figure which he calculated. Landauer said this proves information is more than just a mathematical quantity. This connects information to energy. Through experimental testing over the years, the Landauer Principle has held up.

Vopson says, “He [Landauer] first identified the link between thermodynamics and information by postulating that logical irreversibility of a computational process implies physical irreversibility.” This indicates that information is physical, Vopson says, and demonstrates the link between information theory and thermodynamics.

In Vopson’s theory, information, once created has “finite and quantifiable mass.” It so far applies only to digital systems, but could very well apply to analogue and biological ones too, and even quantum or relativistic-moving systems. “Relativity and quantum mechanics are possible future directions of the mass-energy-information equivalence principle,” he says.

In the paper published in the journal *AIP Advances*, Vopson outlines the mathematical basis for his hypothesis. “I am the first to propose the mechanism and the physics by which information acquires mass,” he said, “as well as to formulate this powerful principle and to propose a possible experiment to test it.”

### The fifth state of matter

To measure the mass of digital information, you start with an empty data storage device. Next, you measure its total mass with a highly sensitive measuring apparatus. Then, you fill it and determine its mass. Next, you erase one file and evaluate it again. The trouble is, the “ultra-accurate mass measurement” device the paper describes doesn’t exist yet. This would be an interferometer, something similar to LIGO. Or perhaps an ultrasensitive weighing machine akin to a Kibble balance.

“Currently, I am in the process of applying for a small grant, with the main objective of designing such an experiment, followed by calculations to check if detection of these small mass changes is even possible,” Vopson says. “Assuming the grant is successful and the estimates are positive, then a larger international consortium could be formed to undertake the construction of the instrument.” He added, “This is not a workbench laboratory experiment, and it would most likely be a large and costly facility.” If eventually proved correct, Vopson will have discovered the fifth form of matter.

So, what’s the connection to dark matter? Vopson says, “M.P. Gough published an article in 2008 in which he worked out … the number of bits of information that the visible universe would contain to make up all the missing dark matter. It appears that my estimates of information bit content of the universe are very close to his estimates.”