92 citations · 359 across the 12 of their papers we have counts for
5 papers · 1 filter
Volume elements of spacetime and a quartet of scalar fields
Frank Gronwald, Uwe Muench, Alfredo Macías +1
Starting with a `bare' 4-dimensional differential manifold as a model of spacetime, we discuss the options one has for defining a volume element which can be used for physical theo…
Gravity Probe C(lock) - Probing the gravitomagnetic field of the Earth by means of a clock experiment
Frank Gronwald, Eleonora Gruber, Herbert Lichtenegger +1
We outline a mission with the aim of directly detecting the gravitomagnetic field of the Earth. This mission is called Gravity Probe C. Gravity Probe C(lock) is based on a recently…
BRST-antifield-treatment of metric-affine gravity
Frank Gronwald
The metric-affine gauge theory of gravity provides a broad framework in which gauge theories of gravity can be formulated. In this article we fit metric-affine gravity into the cov…
Metric-Affine Gauge Theory of Gravity I. Fundamental Structure and Field Equations
Frank Gronwald
We give a self-contained introduction into the metric-affine gauge theory of gravity. Starting from the equivalence of reference frames, the prototype of a gauge theory is presente…
Stress and Hyperstress as Fundamental Concepts in Continuum Mechanics and in Relativistic Field Theory
Frank Gronwald, Friedrich W. Hehl
The notions of stress and hyperstress are anchored in 3-dimensional continuum mechanics. Within the framework of the 4-dimensional spacetime continuum, stress and hyperstress trans…