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Salvatore Torquato Colloquium
October 26, 2018 @ 2:00 PM - 3:00 PM
On Friday, October 26th at 2:00 pm in the 4th Floor Active Learning classroom at 3401 Walnut Street, Wing A, Professor Salvatore Torquato of Princeton University will give a talk titled:
Large-Scale Density Fluctuations and Hyperuniformity in the Physical, Mathematical and Biological Science
While there are four commonly observed states of matter (solid crystal, liquid, gas, and plasma), we have known for some time now that there exist many other forms of matter. The hyperuniformity concept provides a unified means to classify crystals, quasicrystals and special disordered systems. Disordered hyperuniform many-particle systems are exotic states of amorphous matter in that they behave more like crystals or quasicrystals in the manner in which they suppress large-scale density fluctuations, and yet are also like liquids and glasses because they are statistically isotropic structures with no Bragg peaks. Thus, disordered hyperuniform systems can be regarded to possess a “hidden order” that is not apparent on short length scales, which apparently endows such material with novel physical properties. I will review the theoretical foundations of hyperuniform states of matter, and then describe a variety of different disordered examples that arise in physics, mathematics and biology.