Eckehard W. Mielke

Geometrodynamics of Gauge Fields

A dynamic packing for sealing a shaft which passes through a wall separating an oil-containing space from an oil-free space or from the outside atmosphere, composed of two shaft sealing rings which engage the shaft and define an oil-filled gap therebetween, and a duct composed of one portion in communication with the oil-containing space and another portion in communication with the gap to place the gap between the sealing rings in communication with the oil-containing space and which is provided with a closure element in the form of a diaphragm having one of its faces in communication with both duct portions, the duct and element being provided to relieve the pressure in the gap.

Rotating boson star as an effective mass torus in general relativity

Abstract Scalar fields bounded by their own gravitational field can form absolutely stable boson stars, resembling neutron stars. Within general relativity, we construct for the first time the corresponding differentially rotating, localized configurations via numerical integration. The ratio of conserved angular momentum and particle number turns out to be an integer a . The resulting axisymmetric metric, the energy density and the Tolman mass are completely regular.

Exact solution for the exterior field of a rotating neutron star

A four-parameter class of exact asymptotically flat solutions of the Einstein-Maxwell equations involving only rational functions is presented. It is able to describe the exterior field of a slowly or rapidly rotating neutron star with a poloidal magnetic field.

Comment on “Topological invariants, instantons, and the chiral anomaly on spaces with torsion”

In Riemann-Cartan spacetimes with torsion only its axial covector piece

Scaling behaviour of a scalar field model of dark matter haloes

A

Beautiful Gauge Field Equations in Clifforms

couples to massive Dirac fields. Using renormalization group arguments, we show that besides the familiar Riemannian term only the Pontrjagin type four-form

Rotating Boson Stars

dA\wedge dA

Anomalies and gravity

does arise additionally in the chiral anomaly, but not the Nieh-Yan term

Chiral fermions coupled to chiral gravity

d^\star A

The eightfold way to color geometrodynamics

, as has been claimed in a recent paper [PRD 55, 7580 (1997)].