Quantum physics breakthroughs reveal new insights into empty space

Researchers have made significant strides in observing quantum phenomena related to the nature of empty space. An international team of astronomers may have detected vacuum birefringence around the magnetar 1E 1547.0–5408. This phenomenon, predicted by Werner Heisenberg in the 1930s, suggests that extremely powerful magnetic fields can cause the virtual particles within a vacuum to alter the way light travels.

Using tools such as NASA’s Imaging X-ray Polarimetry Explorer (IXPE) and the Parkes radio telescope, scientists analyzed the polarization of radio waves from the magnetar. The study suggests that the magnetar’s magnetic and rotational axes are nearly aligned, providing a unique natural laboratory for studying these effects.

In a separate breakthrough, physicists led by Yansheng Zhang at the University of Cambridge have directly imaged fluctuations in a lab-made quantum field. This direct observation of quantum fluctuations in a vacuum provides a way to simulate relativistic fields in regimes that were previously difficult to study theoretically.