Sökning: "interacting particle systems"

Visar resultat 16 - 20 av 46 avhandlingar innehållade orden interacting particle systems.

1. 16. On transport theory of correlated mesoscopic systems

   Författare :Vadim Cheianov; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Theoretical physics; Teoretisk fysik; Physics; Fysik; fysik; Physics;

   Sammanfattning : This thesis is about the theory of quantum transport through low dimensional correlated systems. Correlated systems are interacting many-particle systems where collective effects predominate over the individual properties of particles whereof they consist. Single particle approach to correlated systems would be essentially wrong. LÄS MER

3. 17. Multiscale models and simulations for diffusion and interaction in heterogeneous domains

   Författare :Omar Malcolm Richardson; Adrian Muntean; Björn Engquist; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multiscale modeling; finite element methods; interacting particle sytems; population dynamics; non-equilibrium dynamics; Matematik; Mathematics;

   Sammanfattning : We investigate multiscale and multiphysics models for evolution systems in heterogeneous domains, with a focus on multiscale diffusions. Although diffusion is often studied in terms of continuum observables, it is a consequence of the motion of individual particles. LÄS MER

4. 18. Effects of Dark Matter in Astrophysical Systems

   Författare :Stefan Clementz; Mattias Blennow; Tommy Ohlsson; Riccardo Catena; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Dark matter; Self-interactions; solar capture; helioseismology; inelastic dark matter; direct detection; indirect detection; Fysik; Physics;

   Sammanfattning : When studying astrophysical structures with sizes ranging from dwarf galaxies to galaxy clusters, it becomes clear that there are vast amounts of unobservable gravitating mass. A compelling hypothesis is that this missing mass, which we call dark matter, consists of elementary particles that can be described in the same manner as those of the standard model of particle physics. LÄS MER

5. 19. Studies of Gas Disks in Binary Systems

   Författare :Miguel de Val Borro; Pawel Artymowicz; William Benz; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Astronomy; Astronomy; Astronomi; Astronomy; astronomi;

   Sammanfattning : There are over 300 exoplanets detected through radial velocity surveys and photometric studies showing a tremendous variety of masses, compositions and orbital parameters. Understanding the way these planets formed and evolved within the circumstellar disks they were initially embedded in is a crucial issue. LÄS MER

7. 20. Interacting particles and droplets at low Reynolds numbers

   Författare :Lisa Prahl; Strömningsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gases; VOS; VOF; Multiphase flow; Interaction; Particles; Droplets; fluid dynamics; plasmas; Gaser; fluiddynamik; plasma;

   Sammanfattning : The overall purpose with this work is to study the flow past particles and droplets using numerical simulations. Especially the interaction among particles and droplets have been a main objective as the results are to be used in order to improve already existing spray models. LÄS MER