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

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 ...

Through a quantum-switch experiment, researchers attempt to reveal “indefinite causal order”—a quantum phenomenon involving events in a before-and-after superposition. Artistic rendition of the ...

Before determining the correct quantum theory of gravity, researchers need to know if gravity is actually quantized. Experiments testing that assumption are now being developed. Quantum fluctuations ...

The new map of the Universe’s expansion history released by the DESI Collaboration offers hints at a breakdown of the standard model of cosmology. Figure 1: A slice of DESI’s first three years of data ...

A Bose-Einstein condensate of radioactive atoms could turn into a source of intense, coherent, and directional neutrino beams, according to a theoretical proposal. Figure 1: Top: At high temperature, ...

The Vera C. Rubin Observatory has released its first images—a small preview of a decadal survey that will observe an unprecedented number of stars and galaxies, helping researchers tackle the biggest ...

New physics may explain discrepant values for the ionization energy of a metastable state of helium. Aaron Bondy is a theoretical physicist at Drake University in Iowa, where he works as a ...

Top quarks and antiquarks have been detected in heavy-ion collisions at the Large Hadron Collider, showing that all six quark flavors were present in the Universe’s first moments. The ATLAS ...

Time crystals realized in the so-called quasiperiodic regime hold promise for future applications in quantum computing and sensing. In ordinary crystals, atoms or molecules form a repeating pattern in ...

The creation of modern quantum mechanics was a messy business in which many of the participants did not grasp the significance of their own discoveries. The wave nature of electrons is revealed in ...