A decades-old neutrino mystery might be solved not by undiscovered physics but by improved calculations.

A hallmark property of unconventional superconductivity has been discovered in a type-I superconductor, whereas it’s normally observed only in type-II materials. Superconductors can be broadly ...

Researchers have gained access to the rich physics of a landmark model magnet by assembling a crystal out of organic magnetic molecules. The S = 1 Haldane chain is an infinite 1D string of integer ...

Two studies find that fundamental quantum constraints rule out a previously proposed neutrino-laser scheme. In last year’s proposal of a neutrino laser, the researchers sought to exploit the same ...

New experiments suggest that superconductivity in twisted bilayer graphene depends on an unconventional electron-pairing mechanism. Figure 1: Two twisted bilayer graphene (TBG) layers stacked one on ...

A ring of optical fiber can be made to host phenomena that originated in the realm of high-energy physics. Yang and his colleagues achieved their feat using a platform based on fiber ring resonators, ...

Figure 1: Barrios Hita and colleagues have explored a new path for developing a formulation of quantum theory that doesn’t rely on complex numbers [5]. In standard quantum theory, every physical ...

Figure 1: A cross section of the core of a collapsing star. Electron neutrinos (blue arrows) and muon and tau neutrinos (green arrows) are emitted and absorbed within all parts of the core. In the ...

Measurements of the decay of the Higgs boson into muon–antimuon pairs provide evidence for the mechanism by which quarks and leptons acquire their mass. Figure 1: Display of a proton–proton collision ...

Figure 1: The shattering of glass is an archetypal fragmentation process. × When a solid object shatters or a liquid drop disintegrates, predicting the outcome seems at first hopelessly difficult. In ...

Pairs of skyrmions—tiny whirlpools that emerge in some magnetic materials—might be able to self-propel, a behavior reminiscent of that of active-matter systems such as motile bacteria. Figure 1: ...

Researchers have proposed methods to tune the properties of altermagnets, a step toward practical applications for this new form of magnet. New theoretical work outlines how to create a switchable ...