Loophole-free violations of Bell inequalities imply that at least one of the assumptions formalising local hidden-variable theories must fail. Here, the authors show that, if only one is false, then it has to fail completely, therefore excluding models that allow partial instantaneous actions at a distance, partially constrain freedom of choice or allow for partial retrocausal influences.

Symmetries play a vital role in many-body physics, and in homogeneous systems one expects symmetries that are translationally invariant. Here, by studying magnetization conserving integrable quantum circuits, researchers find new spatially modulated symmetries that have consequences for quantum transport.

Measurement-induced quantum phases provide prime examples of non-trivial many-body dynamics and collective phenomena, but their experimental detection is difficult due to the post-selection barrier. Here, the authors provide a spin-wave-based approach to monitored quantum dynamics in long-range interacting systems, overcoming this challenge.

Measurements on quantum particles produce random outcomes whose correlations can sometimes never be explained by classical physics. The complete set of possible quantum correlations for two particles under two measurements has now been identified.

One century after Edwin Hubble revealed his astonishing discovery of a cosmos beyond the Milky Way, the most precise measurements still can’t agree on how fast galaxies are moving.

The milestone is an important step towards building smaller, cheaper particle colliders.

Use of precision spectroscopy to test physical models, such as the magnetic interactions of atoms, is often hampered by the lack of reliable values for fundamental properties of the nucleus. This limitation has been overcome for beryllium-9 by precisely determining the nuclear magnetic moment and Zemach radius, and by investigating the effect of bound electrons.

Recent experimental claims of quantum advantage rely on the absence of classical algorithms that can reproduce the results. A tensor network algorithm can now challenge recent optical quantum advantage experiments.

A multi-million dollar facility is hoping to put a 21-year-old debate about dark matter to rest.