Physicists in Canada and Italy have a derivative of the quantum theory of the physical principles related to the storage, manipulation and sharing of information.
New work is a step in a long, ongoing efforts to find a basic physical motivation for calculating mathematical quantum physics, which describes the processes in the realms of Atomic and subatomic unerring accuracy, but samymy commonsense understanding.
"We would like to have a set of Axioms, which give us a little better understand the physics of quantum mechanics," says Michael Westmoreland, a mathematician at the University of Denison in Granville, Ohio, United States.
Quantum theory foundations now lie with abstract mathematical formulae, known as Hilbert spaces, and C * algebras. These abstractions work well for calculating probabilities given in the experiment. But the lack of intuitive physical meaning that those who know — elegance by physicists Albert Einstein theory of special relativity, for example, who says the constant speed of light, and that the laws of physics do not change from one reference frame to the next.
Giulio Chiribella, theoretical physicist at the Perimeter Institute for theoretical physics in the Canadian province of Ontario and friends have their approach based on the postulate called the "purification." System with uncertain ("mixed state") is always part of a larger "pure", which, in principle, be fully known, the team proposes A physical Review of July.
Consider a pawn. This spin zero particles that can decay into two spinning photons. Every single photon is in a State of uncertain – has equal chance spinning up or down. Photons together, however, include the pure State in which the centrifugation must always, in opposite directions.
"We may be ignorant of, but we have a full knowledge," says Chiribella.
This policy requires clean-up, known as the phenomenon of quantum entanglement ", which combines the parts to the whole. It also explains why quantum information may not be copied without their destruction, but it may be "teleported" — replicated to remote location after their destruction at the point of origin.
Based on this principle, Chiribella and friends have reproduced the structure of the mathematics of quantum mechanics using five additional Axioms related to the processing of information. Their Axioms include causality, the idea that now no measurement can influence future measurements and ideal compression, "which means that information can be encoded in a physical system, and then decoded with no failure. Other Axioms include the ability to distinguish the State apart, and the ability to create pure State measurements.
"One," says Christopher Fuchs, theoretical physicist at the perimeter. "This concept, something I think is along the line of trying to find a clear physical principles."
Is this a new derivation of the quantum theory prove to the simplest and most physically significant time will tell.
"What is easy or physically plausible is the question of personal taste," says Caslav Brukner, a physicist at the University of Vienna in Austria that wyhodowal an alternative set of Axioms.
Some of that transformation of quantum theory from the viewpoint of information could help to solve the outstanding problems in physics, such as how to unify quantum mechanics and gravity.
"If lots of formulas the same theory, you're more likely to have one that leads to the next is whether physics," says Ben Schumacher, theoretical physicist, Kenyon College in Gambier, Ohio, United States.
Found in: matter and energy and physics
No comments:
Post a Comment