MG13 - Talk detail |
|
Participant |
Sieroka, Norman | |||||||
|
Institution |
ETH Zurich - Norman Sieroka, CLW C3 - Zurich - - Switzerland | |||||||
|
Session |
HR1 |
Accepted |
No |
Order |
Time |
|||
|
Talk |
Oral abstract |
Title |
On the historical origin and systematic sharpening of holography | |||||
| Co-authors | E.W. Mielke | |||||||
|
Abstract |
Holography is sometimes claimed to be the fundamental principle in the advancement of a theory of quantum gravity. This paper critically evaluates this claim, both from a historical and a systematic perspective. Hence, the physical and indeed metaphysical ancestry and formal development of holography will be discussed (esp. as in the work of Hermann Weyl). Also recent efforts on using holography in connection with string theory and especially with constrained topological field theories will be considered briefly. |
|||||||
|
Session |
QG3 |
Accepted |
Yes |
Order |
10 |
Time |
18:10 - 18:30 | 15' + 5' |
|
Talk |
Oral abstract |
Title |
Holography as a guiding principle in quantum gravity -- some remarks on its origin and aspiration | |||||
| Co-authors | ||||||||
|
Abstract |
Holography is sometimes claimed to be the fundamental principle in the advancement of a theory of quantum gravity. This talk will critically evaluate this claim by combining historical and systematic considerations. I will briefly discuss some work by Hermann Weyl which may count as an important forerunner of the modern concept of holography. A comparison with some recent approaches is then intended to provide a deeper or wider view on some of the current hopes and also limits involved in employing holography as a general guiding principle in physics. |
|||||||
|
Session |
HR1 |
Accepted |
Yes |
Order |
7 |
Time |
17:30 - 18:00 | 30' |
|
Talk |
Oral abstract |
Title |
Weyl's abandonment of unified field theory around 1920 | |||||
| Co-authors | ||||||||
|
Abstract |
Famously, in 1918 Hermann Weyl proposed a generalization of Riemannian geometry to unify general relativity and electrodynamics. This talk investigates the reasons for his subsequent abandoning of any such attempt towards a unified field theory. As will be shown, these reasons originated from three quite different sources. First, there have been inner-physical problems and concerns about field theories in general; especially in relation to the extendedness of matter. Second, there have been rather fundamental issues concerning the relationship between physics and mathematics; regarding especially the analysis of a continuum. And third, also Weyl's more general or philosophical convictions concerning the concept of causality and the irreversibility of time played a central role. |
|||||||