Before, after and at the same time

• Autores: Jacob Aron
• Localización: New scientist, ISSN 0262-4079, Nº. 3088, 2016, pág. 12
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A new experiment shows how gift-giving gets confusing when they're using quantum mechanics to muck about with causality. They may have heard of the double-slit experiment, in which a single particle fired at two small gaps appears to interfere with itself, as if it had passed through both slits at once. That happens because, until it is measured by a detector on the other side, the particle is in a quantum superposition of two states. In some sense it takes both paths.