Physicists create a bizarre new quantum state called a fractional fermi sea
Summary
Physicists have created a highly excited but orderly state of ultracold atoms known as a fractional Fermi sea. Its unusual organization does not fit familiar quantum descriptions and may involve previously unobserved quasiparticles dubbed potential "super-Fermions."
The discovery expands the catalog of possible quantum matter beyond systems governed by conventional Fermi
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A new class of quantum matter could expose limits in current theory and provide a platform for testing exotic particle behavior.