78 citations · 230 across the 22 of their papers we have counts for
23 papers
Correlation effects in one-dimensional metallic quantum wires under various confinements
Vidit Gangwar, Vinod Ashokan, Ankush Girdhar +3
Dynamical response theory is used to investigate various transverse confinements on electron correlations in the ground state of a ferromagnetic one-dimensional quantum wire for di…
Electronic quantum wires in extended quasiparticle picture
Klaus Morawetz, Vinod Ashokan, Kare Narain Pathak +2
A one-dimensional quantum wire of Fermions is considered and ground state properties are calculated in the high density regime within the extended quasiparticle picture and Born ap…
Time behaviour of Hubble parameter by torsion
K. Morawetz
Consequences of the consistent exact solution of Einstein-Cartan equation on the time dependence of Hubble parameter are discussed. The torsion leads to a space and time dependent…
Bose condensation of squeezed light
K. Morawetz
Light with a chemical potential and no mass is shown to possess a general phase-transition curve to Bose-Einstein condensation. This limiting density and temperature range is found…
Correlational latent heat by nonlocal quantum kinetic theory
K. Morawetz
The kinetic equation of nonlocal and non-instantaneous character unifies the achievements of the transport in dense quantum gases with the Landau theory of quasiclassical transport…
Dynamical charge and pseudospin currents in graphene and possible Cooper pair formation
K. Morawetz
Based on the quantum kinetic equations for systems with SU(2) structure, regularization-free density and pseudospin currents are calculated in graphene realized as the infinite mas…
Dynamical mechanism of antifreeze proteins to prevent ice growth
B. Kutschan, K. Morawetz, S. Thoms
The fascinating ability of algae, insects and fishes to survive at temperatures below normal freezing is realized by antifreeze proteins (AFPs). These are surface-active molecules…
Universal short-time response and formation of correlations after quantum quenches
K. Morawetz
The short-time evolution of two distinct systems, the pump and probe experiments with semiconductor and the sudden quench of cold atoms in an optical lattice, is found to be descri…
Terahertz out-of-plane resonances due to spin-orbit coupling
K. Morawetz
A microscopic kinetic theory is developed which allows to investigate non-Abelian SU(2) systems interacting with meanfields and spin-orbit coupling under magnetic fields in one, tw…
Theory of water and charged liquid bridges
Klaus Morawetz
The phenomena of liquid bridge formation due to an applied electric field is investigated. A new solution for the charged catenary is presented which allows to determine the static…
Equivalence of channel-corrected T-matrix and anomalous propagator approach
K. Morawetz
Any many-body approximation corrected for unphysical repeated collisions in a given condensation channel is shown to provide the same set of equations as they appear by using anoma…
Electronic transport properties through thiophenes on switchable domains
T. Kunze, S. Gemming, V. Pankoke +3
The electronic transport of electrons and holes through stacks of ,$\ome ga$-dicyano-,'-dibutyl- quaterthiophene (DCNDBQT) as part of a nov el organic ferroic field-effect…
Modeling the morphogenesis of brine channels in sea ice
B. Kutschan, K. Morawetz, S. Gemming
Brine channels are formed in sea ice under certain constraints and represent a habitat of different microorganisms. The complex system depends on a number of various quantities as…
Multiple condensed phases in attractively interacting Bose systems
M. Männel, K. Morawetz, P. Lipavský
We investigate a Bose gas with finite-range interaction using a scheme to eliminate unphysical processes in the T-matrix approximation. In this way the corrected T-matrix becomes s…
Ginzburg-Landau theory of superconducting surfaces under electric fields
P. Lipavsky, K. Morawetz, J. Kolacek +1
A boundary condition for the Ginzburg-Landau wave function at surfaces biased by a strong electric field is derived within the de Gennes approach. This condition provides a simple…
Kinetic equation for strongly interacting dense Fermi systems
P. Lipavsky, K. Morawetz, V. Spicka
We review the non-relativistic Green's-function approach to the kinetic equations for Fermi liquids far from equilibrium. The emphasis is on the consistent treatment of the off-she…
Relativistic transport equations with generalized mass shell constraints
L. Mornas, K. Morawetz
We reexamine the derivation of relativistic transport equations for fermions when conserving the most general spinor structure of the interaction and Green function. Such an extens…
Damping of giant resonances in asymmetric nuclear matter
K. Morawetz, U. Fuhrmann, R. Walke
The giant collective modes in asymmetric nuclear matter are investigated within a dynamic relaxation time approximation. We derive a coupled dispersion relation and show that two s…
Nonlinear Debye-Onsager-Relaxation-Effect
K. Morawetz
The quantum kinetic equation for charged particles in strong electric fields is used to derive the nonlinear particle flux. The relaxation field is calculated quantum mechanically…
New collective mode due to collisional coupling
K. Morawetz, R. Walke, U. Fuhrmann
Starting from a nonmarkovian conserving relaxation time approximation for collisions we derive coupled dispersion relations for asymmetric nuclear matter. The isovector and isoscal…
Formation of correlations and energy-conservation at short time scales
K. Morawetz, H. S. Köhler
The formation of correlations due to collisions in an interacting nucleonic system is investigated. Results from one-time kinetic equations are compared with the Kadanoff and Baym…
Exact Solution of selfconsistent Vlasov equation
K. Morawetz
An analytical solution of the selfconsistent Vlasov equation is presented. The time evolution is entirely determined by the initial distribution function. The largest Lyapunov expo…
In-medium relativistic kinetic theory and nucleon-meson systems
K. Morawetz, D. Kremp
Within the model of coupled nucleon-meson systems, a generalized relativistic Lenard--Balescu--equation is presented resulting from a relativistic random phase approximation…