Recently, researchers at the University of Bath have discovered a new type of particle that exhibits negative mass. These particles, known as hybrid exciton-polaritons, are created by mixing light and matter, and are capable of flowing against a force. This breakthrough could revolutionize the field of quantum mechanics, and pave the way for new discoveries.

This new particle, the hybrid exciton-polariton, is a unique combination of light and matter, and is capable of exhibiting an unexpected and rare property - negative mass. This means that when a force is applied to it, it accelerates in the opposite direction. This could have a huge range of applications, from quantum computing to new energy sources. The implications of this discovery are still being explored, but it looks like it could be the foundation for some truly groundbreaking research.

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source: Phys.org