Pin groups in general relativity
نویسندگان
چکیده
منابع مشابه
General relativity histories theory II : Invariance groups
In this paper we show in detail how the histories description of general relativity carries representations of both the spacetime diffeomorphisms group and the Dirac algebra of constraints. We show that the introduction of metric-dependent equivariant foliations leads to the crucial result that the canonical constraints are invariant under the action of spacetime diffeomorphisms. Furthermore, t...
متن کاملPrediction in general relativity
Several authors have claimed that prediction is essentially impossible in the general theory of relativity, the case being particularly strong, it is said, when one fully considers the epistemic predicament of the observer. Each of these claims rests on the support of an underdetermination argument and a particular interpretation of the concept of prediction. I argue that these underdeterminati...
متن کاملGeneral-relativistic Visualization General Relativity
I n our previous article about special-relativistic visualization,1 we described what the travelers from our highly developed civilization observed when they passed the Earth; now, they set out for the Cygnus X-1 binary system, which is roughly 6,000 light years away. The Cygnus X-1 system consists of a super giant variable star (HDE 226868) and a very compact object—presumably a black hole—wit...
متن کاملTopology Change in General Relativity∗
A review is given of recent work on topology changing solutions to the first order form of general relativity. These solutions have metrics which are smooth everywhere, invertible almost everywhere, and have bounded curvature. The importance of considering degenerate metrics is discussed, and the possibility that quantum effects can suppress topology change is briefly examined. * To appear in t...
متن کاملAsymptotic Symmetries in General Relativity
The symmetries of flat Minkowski space-time are well known to be described by the Poincare group, and include translations and rotations. On the other hand, the symmetries of an asymptotically flat space-time are described by the infinite-dimensional BondiMatzner-Sachs (BMS) group. This group includes new types of transformations called supertranslations and superrotations, whose physical inter...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2020
ISSN: 2470-0010,2470-0029
DOI: 10.1103/physrevd.101.021702