Search and Discovery
Results are starting to come in from detectors honed to hunt for the universe's missing mass. Although not conclusive, the reports are a harbinger of what's to come.
Despite its ubiquity, the neutron still resists precise measurement of its lifetime. More precision would allow tests of Big Bang nucleosynthesis and theories beyond the Standard Model.
Semiconductors doped with manganese may provide the answer to a long‐standing question in magneto‐electronics.
The existence of entropy, and its increase, can be understood without reference to either statistical mechanics or heat engines.
The fractional quantum‐Hall effect and other exotic behaviors of electrons trapped in two dimensions can be understood in terms of composite particles—electrons sporting attached flux quanta.