Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 6: Ultracold Atoms, Ions and Molecules II (with Q)
A 6.1: Vortrag
Montag, 29. Februar 2016, 14:30–14:45, e001
Non-Equilibrium Thermodynamics of Harmonically Trapped Bosons — •Thomas Fogarty1,4, Miguel Angel Garcia-March2, Steve Campbell3, Thomas Busch4, and Mauro Paternostro3 — 1Theoretische Physik, Universitat des Saarlandes, Saarbrucken, Germany — 2ICFO Institut de Ciencies Fotoniques, Spain — 3CTAMOP, School of Mathematics and Physics, Queen's University Belfast, United Kingdom — 4Quantum Systems Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
Trapped ensembles of bosonic atoms represent an ideal candidate to simulate some of the most interesting aspects in the phenomenology of out-of-equilibrium quantum systems. In this talk I will focus on harmonically trapped bosons and use the framework of non-equilibrium thermodynamics to the study the role quantum features play in setting the dynamic and static properties of the systems when the Hamiltonian parameters are suddenly quenched. Through a combination of analytical and numerical approaches I explore the non-trivial dynamics that arise from the interplay between the quenched trap frequency and an induced quench of the inter-particle interactions. Interesting quantum phenomena such as Anderson's Orthogonality catastrophe will be explored in this framework. I will further show some qualitative evidence for the relationship between the creation of entanglement and the (irreversible) work performed on the system. This highlights interesting connections between the degree of inter-particle entanglement and their non-equilibrium thermodynamics.