Celia Viermann
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View article: Curved and expanding spacetime geometries in Bose-Einstein condensates
Curved and expanding spacetime geometries in Bose-Einstein condensates Open
Phonons have the characteristic linear dispersion relation of massless relativistic particles. They arise as low energy excitations of Bose-Einstein condensates and, in nonhomogeneous situations, are governed by a space- and time-dependent…
View article: Curved and expanding spacetime geometries in Bose-Einstein condensates
Curved and expanding spacetime geometries in Bose-Einstein condensates Open
Phonons have the characteristic linear dispersion relation of massless relativistic particles. They arise as low energy excitations of Bose-Einstein condensates and, in nonhomogeneous situations, are governed by a space- and time-dependent…
View article: Quantum field simulator for dynamics in curved spacetime
Quantum field simulator for dynamics in curved spacetime Open
The observed large-scale structure in our Universe is seen as a result of quantum fluctuations amplified by spacetime evolution. This, and related problems in cosmology, asks for an understanding of the quantum fields of the standard model…
View article: High signal to noise absorption imaging of alkali atoms at moderate magnetic fields
High signal to noise absorption imaging of alkali atoms at moderate magnetic fields Open
We present an improved scheme for absorption imaging of alkali atoms at moderate magnetic fields, where the excited state is well in the Paschen–Back regime, but the ground state hyperfine manifold is not. It utilizes four atomic levels to…
View article: A Model for Hydrodynamics in Kinetic Field Theory
A Model for Hydrodynamics in Kinetic Field Theory Open
In this work, we introduce an effective model for both ideal and viscous fluid dynamics within the framework of kinetic field theory (KFT). The main application we have in mind is cosmic structure formation where gaseous components need to…
View article: A microscopic, non-equilibrium, statistical field theory for cosmic structure formation
A microscopic, non-equilibrium, statistical field theory for cosmic structure formation Open
Building upon the recent pioneering work by Mazenko and by Das and Mazenko, we develop a microscopic, non-equilibrium, statistical field theory for initially correlated canonical ensembles of classical microscopic particles obeying Hamilto…