Yet the easiest way to sell it to politicians was to frame it as a search for a single particle, the Higgs boson.

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As a simplified model, Dr Page imagines a wave function for a whole universe (for these purposes, a universe can be considered as a single particle), from which two possible versions might be born.

ECONOMIST: The universe, it appears, may not be alone

At E3, the Epic representative breezed through a level editor that looked more like a game itself, changing the properties of items, lighting effects, and particle physics with single clicks, before opening up a screen showing a flow chart of boxes that contained every script running in any given room.

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But transmitting single particles or, to be accurate, copying the quantum state of one particle on to another, perhaps of a different kind could one day have less science-fictional uses.

ECONOMIST: Don��t look now, I��m teleporting