Talk detail

Participant	Wolz, Florian
Institution	Friedrich-Alexander-University Erlangen-Nuremberg - Staudtstraße 7, Building B2 - Erlangen - Bavaria - Germany

Session	AT5	Accepted	Yes	Order	2	Time	15:35	15'
Talk	Oral abstract	Title	Causal structure of physical matter field equations
Coauthors
Abstract	The causal structure of given matter field equations provides the crucial input from which the constructive gravity program starts. It is therefore of paramount importance to successfully address a number of subtle issues, which do not arise in the simplest examples in the mathe- matical literature, but urgently must be taken into account for physically realistic models. This talk presents a recipe to handle these complications. In particular, we will focus on how to deal with non-scalar systems of equations, gauge symmetries and implicit information that needs to be made explicit before the causal structure, encoded in the so-called principal polynomial, can be calculated correctly. We will present quite remarkable examples for the importance of getting these points right in the context of the constructive gravity program.
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