Padlocks on the quantum Einstein- Rosen Bridge

The entanglement between particles and the so-called “wormholes”, the hypothetical wormholes that would unite remote areas of the universe, may be different manifestations of an identical physical reality. The hypothesis can be found in the Physical Review Letters.



What do they have in common a phenomenon as quantum entanglement, with its bizarre bonds between particles twins, and entities such as wormholes, hypothetical shortcuts between pairs of holes blacks obtained by digging burrows deep into the bowels of space-time? It’s all exotic things, incomprehensible and counter- intuitive, I agree; at least for most of us, human beings.

Can we do better? First of all it is not difficult to see that in both cases there are connections : between infinitesimal particles in the case of entanglement and bottomless blacks holes in between that of wormholes (called , not surprisingly , “the Einstein- Rosen bridges” ), but they still links.

Recycling then some notion from comics and sci-fi cinema, we can venture a step further: in both cases they are shortcuts along which there exists no speed limit, since theoretically capable of circumvent the unpleasant constraint of 300 thousand km/s that always brings us back to reality whenever we try to dream about moving to another world.

To venture into security at the top level, however, similes and metaphors road are no longer enough. It must arm themselves with solid mathematical tools. How Kristan Jensen (University of Victoria, Canada), Andreas Karch (University of Washington, USA) and Julian Sonner (MIT) have done- the first two as a couple, the third solo – with two studies, both published on 20 November on Physical Review Letters. Two theoretical studies so as to make you dizzy just to read the titles (“Holographic Dual of an Einstein – Podolsky -Rosen Pair Has a Wormhole ” is signed by Jensen and Karch, ” Holographic Schwinger Effect and the Geometry of Entanglement ” by Sonner), but made ​​intelligible to all from an excellent article published Monday on the website of Science signed by Katia Moskvitch.

Resorting to the so-called “holographic principle”, under which an n-dimensional world can be represented by the world to n- 1 dimensions that marks the boundaries of the three theoretical physicists have come to establish some sort of correspondence between wormholes and entanglement . Brutally simplifying, the phenomenon of quantum entanglement would be a representation of the universe in 3D (without being considered gravity) than they are wormholes in a universe in 4D (with gravity). In short, the wormhole that combines a pair of black holes at opposite ends of the universe and the ineffable string that binds indissolubly the properties exhibited by a pair of elementary particles would be merely two sides of the same coin. A vision, it is worth observing, would come straight leg in their long controversy between quantum mechanics and general relativity.

To ruin the dreams of those who already imagine traveling through hyperspace to the worlds of distant galaxies, however, in addition to the difficulty of translating in comfortable tourist vehicles spatial mathematical models that could not be more ethereal, there are two considerations that undermine the project at the base. We start the entanglement quantum: as both for instance, regardless of the distance that separates the pair of particles, cannot be used even to send information as elementary as the spin state of one of the two. This is because, by definition, it is discovered only when that state is observed. In short, the phenomenon is beyond our control.

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