Tue September 29, 2015 4:00 pm
Title: Dynamic finite temperature response of impurities in a Fermi sea: from mesoscopic physics to ultracold atoms
Location:26-214
Recently, new experimental techniques in ultracold atoms made it possible to study the real-time response of Fermi systems on, compared to the Fermi time, ultrafast time scales [1], which are hard to access in other condensed matter systems. Combined with spectroscopic NMR methods this allows to probe in detail the quantum dynamics of the system. Specifically we study the time- and frequency resolved response of a Fermi gas at arbitrary temperature which interacts with an impurity supporting a non-trivial molecular state. As such the system allows to study the extend of universality in the orthogonality catastrophe on all time scales [2,3].