Physics Colloquium - Ashvin Vishwanath, University of California, Berkeley - "Information, Entanglement and the Quantum Phases of Matter"
Many states of matter, including ferromagnets and superfluids, are ultimately described by a classical order parameter despite being composed of quantum particles. However, recent experiments have impelled us to look for new forms of emergence that are intrinsically quantum mechanical. These include topological insulators and quantum spin liquids, in addition to the well-known quantum Hall states.
I will discuss how quantum entanglement can serve as a fingerprint of these novel states, and how ideas from quantum information, such as strong sub-additivity, place constraints on physical properties.
Location: Jadwin A10
Date/Time: 10/25/12 at 4:30 pm - 10/25/12 at 5:30 pm
Category: Physics Colloquium