Global ETD Search

11	Materie-Optik mit Edelgasmolekülen an Nanostrukturen / Matter Optics with Noble Gas Molecules and Nanostructures Stoll, Werner Martin 18 December 2003 (has links) No description available. Mathematics and Computer Science Materie-Optik Few-Body Systems Edelgascluster Helium Spektroskopie 530 Physik Matter Optics Few-Body Systems Noble gas clusters Helium Spectroscopy 33.10 33.30 RDI 240 33.23 RDI 850 33.25 RTE 400 33.30
12	Molekulardynamische Untersuchungen zur Binnendynamik kollabierender Blasen / Molecular dynamics simulation of the inner dynamics of collapsing bubbles Schanz, Daniel Alexander 08 October 2008 (has links) No description available. 530 Physik Mathematics and Computer Science Molekulardynamik Kavitation Sonolumineszenz Blasenkollaps Molecular dynamics cavitation sonoluminescence bubble collapse 33.12 33.25 33.99 RHK 000: Ultraschall {Physik: Akustik}
13	Phase behaviour of random copolymers and crosslinked homopolymer blends / Phasenverhalten zufälliger Kopolymere und vernetzter Homopolymermischungen Wald, Christian 08 November 2005 (has links) No description available. 530 Physik Mathematics and Computer Science zufällige Kopolymere vernetzte Polymermischungen Heteropolymere Phasenseparation Mikrophasenseparation Vernetzung random copolymers crosslinked polymer blends heteropolymers phase separation microphase separation crosslinking 33.25
14	Enhanced Conformational Sampling of Proteins Using TEE-REX / Verbessertes Sampling von Proteinkonformationen durch TEE-REX Kubitzki, Marcus 11 December 2007 (has links) No description available. 530 Physik WC 000 Mathematics and Natural Science Molekulardynamik Proteindynamik Computersimulation Simulationsmethodik Hauptkomponentenanalyse molecular dynamics protein dynamics simulation methodology replica exchange essential dynamics principal component analysis conformational sampling 42.12 33.10 33.06 33.25
15	Investigation of the emergence of thermodynamic behavior in closed quantum systems and its relation to standard stochastic descriptions Schmidtke, Daniel 20 August 2018 (has links) Our everyday experiences teach us that any imbalance like temperature gradients, non-uniform particle-densities etc. will approach some equilibrium state if not subjected to any external force. Phenomenological descriptions of these empirical findings reach back to the 19th century where Fourier and Fick presented descriptions of relaxation for macroscopic systems by stochastic approaches. However, one of the main goals of thermodynamics remained the derivation of these phenomenological description from basic microscopic principles. This task has gained much attraction since the foundation of quantum mechanics about 100 years ago. However, up to now no such conclusive derivation is presented. In this dissertation we will investigate whether closed quantum systems may show equilibration, and if so, to what extend such dynamics are in accordance with standard thermodynamic behavior as described by stochastic approaches. To this end we consider i.a. Markovian dynamics, Fokker-Planck and diffusion equations. Furthermore, we consider fluctuation theorems as given e.g. by the Jarzynski relation beyond strict Gibbsian initial states. After all we find indeed good agreement for selected quantum systems. equilibration closed quantum systems stochastic processes 33.23 - Quantenphysik 05.60.Gg - Quantum transport 72.15.Rn - Localization effects ddc:530 ddc:500
16	Aspects of Non-Equilibrium Behavior in Isolated Quantum Systems Heveling, Robin 06 September 2022 (has links) Based on the publications [P1–P6], the cumulative dissertation at hand addresses quite diverse aspects of non-equilibrium behavior in isolated quantum systems. The works presented in publications [P1, P2] concern the issue of finding generally valid upper bounds on equilibration times, which ensure the eventual occurrence of equilibration in isolated quantum systems. Recently, a particularly compelling bound for physically relevant observables has been proposed. Said bound is examined analytically as well as numerically. It is found that the bound fails to give meaningful results in a number of standard physical scenarios. Continuing, publication [P4] examines a particular integral fluctuation theorem (IFT) for the total entropy production of a small system coupled to a substantially larger but finite bath. While said IFT is known to hold for canonical states, it is shown to be valid for microcanonical and even pure energy eigenstates as well by invoking the physically natural conditions of “stiffness” and “smoothness” of transition probabilities. The validity of the IFT and the existence of stiffness and smoothness are numerically investigated for various lattice models. Furthermore, this dissertation puts emphasis on the issue of the route to equilibrium, i.e., to explain the omnipresence of certain relaxation dynamics in nature, while other, more exotic relaxation patterns are practically never observed, even though they are a priori not disfavored by the microscopic laws of motion. Regarding this question, the existence of stability in a larger class of dynamics consisting of exponentially damped oscillations is corroborated in publication [P6]. In the same vein, existing theories on the ubiquity of certain dynamics are numerically scrutinized in publication [P3]. Finally, in publication [P5], the recently proposed “universal operator growth hypothesis”, which characterizes the complexity growth of operators during unitary time evolution, is numerically probed for various spin-based systems in the thermodynamic limit. The hypothesis is found to be valid within the limits of the numerical approach. Non-Equilibrium Physics Statistical Physics Quantum Mechanics 33.23 - Quantenphysik ddc:530
17	Critical dynamics of gelling polymer solutions / Kritische Dynamik gelierender Polymerflüssigkeiten Löwe, Henning 09 December 2004 (has links) No description available. 530 Physik Mathematics and Computer Science Polymere Gelation kritische Phänomene Dynamik Rouse Modell Zimm Modell Diffusion Stressrelaxation Rheologie Zufallsgraphen zufällige Widerstandsnetzwerke polymers gelation critical phenomena dynamics Rouse model Zimm model diffusion stress relaxation rheology random graphs random resistor networks 33.25
18	Multiphase coexistence with sequence fractionation in random block copolymers / Multi-Phasenkoexistenz mit Sequenz-Fraktionierung in statistischen Block-Copolymeren von der Heydt, Alice 23 September 2011 (has links) No description available. 530 Physik Physics statistische Physik statistisches Blockcopolymer Sequenz-Fraktionierung Phasenkoexistenz homogen strukturiert Segregation kontinuierlicher Phasenübergang multikritischer Punkt statistical physics random block copolymer sequence fractionation phase coexistence homogeneous structured segregation continuous phase transition multicritical point 33.10 33.25 33.64 RDI 700: Statistische Physik Quantenstatistik SWK 600: Block-Copolymere Graft-Copolymere Polymergemische {Makromolekulare Chemie}
19	Random Block Copolymer Melts in the Bulk and at Selective Substrates / Zufallsblockkopolymerschmelzen im Volumen und an selektiven Substraten Steinmüller, Birger 12 December 2011 (has links) No description available. 530 Physik Physics Zufallsblockkopolymere Interphase elastische Eigenschaften random block copolymers interphase elastic properties 33.06 33.25 33.66 33.68 RDI 700: Statistische Physik Quantenstatistik RXE 000: Oberflächen dünne Schichten Grenzflächen Filme {Physik: Materialbehandlungen}
20	Einfache Modelle für komplexe Biomembranen / Simple Models For Complex Biomembranes Schultze, Hergen 06 October 2003 (has links) No description available. 530 Physik Mathematics and Computer Science Weiche Materie Komplexes Fluid Biomembran Cluster Entmischung Gittergas Lipid Protein Adsorbat Krümmung Saft Matter Complex Fluid Biomembrane Cluster Demixing Lattice Gas Lipid Protein Adsorbate Curvature 33.25 33.64 RDI 700: Statistische Physik Quantenstatistik

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