Existe tempo negativo?

Pesquisadores da Universidade de Toronto sugerem que o “tempo negativo” em interações luz-matéria não é só conceito teórico, mas um fenômeno físico mensurável.

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Quando fótons atravessam átomos, estes entram em estado “excitado” brevemente.

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A equipe mediu esse intervalo e obteve resultados com durações “menores que zero”.

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Não há indicação de viagem temporal. Esses fótons não transportam informação, contornando violações à relatividade especial de Einstein.

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A física Sabine Hossenfelder questionou o significado de “tempo negativo”, vendo-o como descrição de fases dos fótons, não da passagem real do tempo.

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Embora as descobertas sejam importantes para a compreensão quântica, os pesquisadores reconhecem que ainda não há aplicações práticas claras para o fenômeno.

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