Science, Space and Technology News 2024
Examples of granular matter: multicolored plastic balls in a playground, gravel, sesame seeds and lentils . Credit: Images by Julia Kertesz, Martin Olsson, Jitender Kumar and Zyance respectively .
Narayan and Mathur show that the universal features of the spectra are described by random matrix theory, a branch of mathematics developed by nuclear physicists in the 1950s. The possibility that random matrix theory might be applicable to the vibrations of granular matter has important precursors. But in the new work, it is convincingly demonstrated for the first time that the spectra are described by a particular flavor of random matrix theory called the Laguerre ensemble.
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