<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions"^^ . "Classification and understanding of scaling solutions in closed quantum systems far from thermal equilibrium, known as nonthermal fixed points, are one of the open problems in\r\nnonequilibrium quantum many-body theory. The usual method involves searching for possible self-similar solutions to a (nonperturbative) evolution equation, e.g., Boltzmann or\r\nKadanoff–Baym, starting from a far-from-equilibrium initial condition. In this work, we develop an alternative approach based on the correspondence between scaling and fixed points of the renormalization group. Using an ultracold Bose gas as an example we show how possible far-from-equilibrium scaling solutions can be systematically obtained by solving fixed-point renormalization-group equations. In the second part of this thesis, we investigate dynamics preceding a fully developed self-similar evolution. We use the Hamiltonian\r\nformulation of kinetic theory to perform a stability analysis of nonthermal fixed points in an expanding non-Abelian plasma characterized by the Fokker–Planck collision kernel. Employing an adiabatic expansion we develop a perturbation theory, which at next-to-leading order allows us to derive stability equations for scaling exponents and obtain the Lyapunov relaxation rates associated with a nonthermal fixed point."^^ . "2023" . . . . . . . "Aleksandr N."^^ . "Mikheev"^^ . "Aleksandr N. Mikheev"^^ . . . . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (PDF)"^^ . . . "dissertation.pdf"^^ . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (Other)"^^ . . . . . . "small.jpg"^^ . . . "Far-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #32924 \n\nFar-from-equilibrium universal scaling dynamics in ultracold atomic systems and heavy-ion collisions\n\n" . "text/html" . . . "530 Physik"@de . "530 Physics"@en . .