Colloquia are Wednesdays at 4:00 p.m. in DUAN G1B20, unless otherwise noted.
Coffee, tea and cookies will be available before regular colloquia beginning at 3:45 p.m. in DUAN G1B31.
 M. Reid, Phys. Rev. A 40, 913–923 (1989)
Recent progress, particularly in the field of many-body localization, has led to generalizations of these fundamental ideas to the out-of-equilibrium setting. I will describe this progress, particularly as applied to periodically driven or Floquet systems. I will show that not only can non-equilibrium systems exhibit a sharp notion of phase structure, but that some of these phases are completely novel and unique to the out-of-equilibrium setting. For example, certain phases of matter that are forbidden in equilibrium, such as quantum time crystals, have found new life in the out-of-equilibrium setting. I will describe some of the many fascinating properties of this phase, and comment on recent experiments that have detected signatures of time crystals in a variety of different physical settings.
 F. Menges et al., Nanoscale thermometry by scanning thermal microscopy, Review of Scientific Instruments (87) 7, 074902, 2016.
 F. Menges et al., Temperature mapping of operating nanoscale devices by scanning probe thermometry, Nature Communications 7(10874), 2016.
 N. Mosso et al., Heat transport through atomic contacts, Nature Nanotechnology 12, 430-433, 2017.
For more information about colloquia this semester, contact: John Price.