Title: Structural Glass Transition of Hyperuniform Liquids
Speaker: Prof. Erdal C. Oğuz (IOP)
Time: Oct. 28 (Friday), 10:00
Place: Rm M830, IOP-CAS
Abstract: 
 Whether the transition from a liquid to a glass involves a change only in how the particles move (a purely dynamical transition) or also in how they are arranged (a structural transition), is considered one of the key open questions in condensed-matter physics.
Just as they can form Wigner crystals, systems with long-range repulsions can also undergo a glass transition. In this talk, I will show that such Wigner glasses, stabilized by long-range, power-law repulsive potentials are structurally different from the hyperuniform liquid from which they form. Our glasses are perfectly hyperuniform and exhibit a larger degree of hyperuniformity than the liquid, i.e., they suppress density fluctuations stronger than the liquid phase. This is in stark contrast to ordinary non-hyperuniform glasses stabilized by short-range interactions. These Wigner glasses, therefore, may well be regarded as a distinct state of matter. In particular, their glass transition has unmistakable structural signatures.