Since the theoretical work of Einstein [1905] and von Smoluckowski [1906], and the experiments of Perrin [1909], Brownian motion at long time-scales has been extensively studied for over a century. Short time-scale aspects ...

Classical and semiclassical analyses of a Klein-Gordon field minimally coupled to a fixed, signature-changing (Riemannian to Lorentzian) background are performed. The background spacetime is a toy model used to represent ...

Many properties of the thin films are different from the bulk value and in many cases, depend dramatically on the film thickness. In the metallic ultra-thin films epitaxially grown on the semiconductor substrate, the ...

If there is a general theme to this thesis, it is the effects of strong correlations in both bosons and fermions. The bosonic system considered here consists of ultracold alkali atoms trapped by interfering lasers, so ...

This thesis describes several new ideas towards spatially resolved single atom detection, using a magic wavelength and spatially resolved stimulated Raman transitions. After an introduction to the theory of AC-Stark shifts ...

High intensity lasers interacting with an overdense target can accelerate high energy (“hot”) electrons at currents that would far exceed the Alfven limit. Hot electron propagation can be inhibited when bulk electron motion ...

In the scope of this master thesis, a home-made brass scanning tunneling microscope (STM) was machined, assembled and tested for its functionality. For this microscope, a new approach-technique was used which follows the ...

Plasma turbulence in the Texas Helimak, a simple magnetized torus (SMT) experiment, has been simulated with fluid and gyrokinetic continuum models that employ the discontinuous Galerkin (DG) computational method. SMTs are ...

Internal gravity waves are traveling disturbances that propagate within a fluid whose density varies with depth, and two prominent examples where these occur are the atmosphere and the ocean. In the latter case, which is ...

In this thesis we study the spin or pseudospin singlet pair condensation of two different kinds of polarized fermion systems. Using generalized BCS mean-field theories we study how pairing adapts to unequal spin or ...