Spacetime topology from the tomographic histories approach: Part II

Details Spacetime topology from the tomographic histories approach: Part II Spacetime topology from the tomographic histories approach: Part II

2005-10-11

arxiv.org/abs/gr-qc/0510053v2

Int.J.Theor.Phys. 45 (2006) 2350

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

21 pages, slight change in title and certain minor corrections in this second version. To apear in IJTP

Scientific paper

10.1007/s10773-006-9205-1

As an inverse problem, we recover the topology of the effective spacetime that a system lies in, in an operational way. This means that from a series of experiments we get a set of points corresponding to events. This continues the previous work done by the authors. Here we use the existence of upper bound in the speed of transfer of matter and information to induce a partial order on the set of events. While the actual partial order is not known in our operational set up, the grouping of events to (unordered) subsets corresponding to possible histories, is given. From this we recover the partial order up to certain ambiguities that are then classified. Finally two different ways to recover the topology are sketched and their interpretation is discussed.

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