Non-Equilibrium Dynamics Beyond Dephasing: Recurrences and Loss Induced Cooling in One-dimensional Bose Gases (Springer Theses)

Cold atomic gases trapped and manipulated on atom chips allow the realization of seminal one-dimensional (1d) quantum many-body problems in an isolated and well controlled environment. In this context, this thesis presents an extensive experimental study of non-equilibrium dynamics in 1d Bose gases, with a focus on processes that go beyond simple dephasing dynamics. It reports on the observation of recurrences of coherence in the post-quench dynamics of a pair of 1d Bose gases and presents a detailed study of their decay. The latter represents the first observation of phonon-phonon scattering in these systems. Furthermore, the thesis investigates a novel cooling mechanism occurring in Bose gases subjected to a uniform loss of particles. Together, the results presented show a wide range of non-equilibrium phenomena occurring in 1d Bose gases and establish them as an ideal testbed for many-body physics beyond equilibrium. Front Matter ....Pages i-xii Preamble (Bernhard Rauer)....Pages 1-4 Introduction and Theoretical Basics (Bernhard Rauer)....Pages 5-27 Experimental Setup and Probing (Bernhard Rauer)....Pages 29-65 Cooling Through Uniform Loss (Bernhard Rauer)....Pages 67-86 Recurrences (Bernhard Rauer)....Pages 87-113 Outlook (Bernhard Rauer)....Pages 115-118 Back Matter ....Pages 119-128