Browsing Fakultät für Physik (inkl. GAUSS) by Advisor & Referee "Kree, Reiner Prof. Dr."
Now showing items 1-20 of 44
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Structure formation in binary polymer systems: Short-time dynamics and dynamics of crosslinked systems
(2022-07-27)Structure evolution in multicomponent polymer melts and in their network equivalents is investigated. In the first part, particle-based simulations reveal that on short length and time scales, the collective kinetics of ... -
Criticality and sampling in neural networks
(2021-02-25)The brain is made of billions of functional units that interact and give raise to its collective properties. The criticality hypothesis states that many these properties emerge due to brain dynamics operating at the critical ... -
Fluctuational electrodynamics for nonlinear materials in and out of equilibrium
(2019-05-16)Fluctuational electrodynamics (FE) is a successful and well established theory. By making use of the fluctuation dissipation-theorem (FDT), it ties together the linear response (Green's function) and the strength of thermal ... -
Dynamics of Complex Flow Networks
(2019-01-28)Flow networks consist of individual units called nodes connected by edges transporting flows of some quantity – such as electricity, water or cars. Each of us encounters more than one flow network every day. They form ... -
Study of active particles in heterogeneous media
(2018-09-07)In this thesis I present simulation-based studies of systems of self- propelled particles in heterogeneous media. I consider the interaction of particles with planar walls, single spherical obstacles or arrays of randomly ... -
Conformational Dynamics of Living Polymers
(2018-07-11)Polymerization is outstanding among chemical reaction processes due to its importance for technical applications as well as for an understanding of complex processes in living matters. In this thesis, we have studied the ... -
Time-resolved X-ray phase-contrast tomography
(2018-06-27)X-ray tomography allows to obtain the three-dimensional (3d) structure of weakly interacting objects, such as tissue samples in biomedical imaging or nanoscale structures in materials science, with high spatial resolution. ... -
Dynamic Responses of Networks under Perturbations: Solutions, Patterns and Predictions
(2018-05-31)External perturbations are omnipresent in the dynamics of oscillator networks across biology, physics and engineering. How such networks dynamically respond to fluctuating perturbation signals fundamentally underlies their ... -
Energy dissipation and transport in polymeric switchable nanostructures via a new energy-conserving Monte-Carlo scheme
(2018-04-13)Polymers are materials that are widely used in industry. The advantages of polymers are their comparatively simple possibility of processing, e.g, injection moulding processes, 3D printers, and self-assembly. Polymers ... -
Dynamics of isolated quantum many-body systems far from equilibrium
(2018-01-22)This thesis addresses different aspects of the dynamics of isolated quantum many-body systems far from equilibrium, ranging from transient phenomena at short times to questions about relaxation and equilibration at late ... -
Synchronisation Behaviour of Viscoelastically Coupled Self-Sustained Oscillators as Models for Oscillations of Premature Cardiomyocytes
(2017-11-22)This thesis analyses how the synchronisation behaviour of self-sustained oscillators is influenced by the viscoelastic properties of their coupling. This question is motivated by the early development stage of artificial ... -
Thermalization in one-dimensional quantum-many-body systems
(2017-01-16)We consider the thermalization of the momentum distribution in two one-dimensional models. The first one is the integrable Hubbard model with an additional integrability breaking term in the Hamiltonian, which is a ... -
Elasticity of basic structural element in anisotropic macromolecular networks
(2016-09-27)Semiflexible filaments are abundant in biological materials. From cells to the extracellular environment, these kind of filaments are found. They are important for many biological organizations and processes. The maintenance ... -
Rheology of frictional grains
(2016-08-19)This thesis deals with the description of flow and arrest of granular matter. Granular matter can undergo a rigidity transition — called jamming — that is mainly controlled by the applied stresses and the packing fraction ... -
Dual Fermion Approach to Disordered Correlated Systems
(2015-11-05)Disorder is ubiquitous in real materials and influences the physical properties like the conductivity to varying degrees. If electron-electron interactions are strong, theoretical and numerical treatment of these systems ... -
Elastizität von vernetzten semiflexiblen Biopolymersystemen
(2015-06-29)In eukaryotic cells biopolymers such as actin filaments can arrange in various ways due to actin binding proteins, and for many cellular processes such biopolymers are of crucial importance. In this thesis, two different ... -
Entropic Motors
(2014-03-06)Asymmetric test particles can rectify thermal fluctuations of impinging particles, if the test particles are not in equilibrium with their environment. Due to this rectification, these test particles are called Brownian ... -
Molecular Dynamics simulations of polymer liquids on substrates of different topography
(2013-02-04)The properties of polymer films and droplets at substrates of different topography are studied employing particle-based simulation techniques (Molecular Dynamics). The liquid is modeled by short coarse-grained polymer ... -
Synchronization, Neuronal Excitability, and Information Flow in Networks of Neuronal Oscillators
(2012-09-27)Synchronization is an omnipresent phenomenon in the dynamics of complex neuronal networks, emerging between single neurons as the simultaneous generation of action potentials and on larger spatial scales in the ... -
Phase diagrams of two-dimensional frustrated spin systems
(2012-04-19)In this work the ordering processes in classical frustrated Ising models and the ground-state behavior of frustrated quantum spin models are investigated. In the first part the phase transition from a high-temperature ...