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Ntina Savvidou
Researcher at University of Patras
Publications - 53
Citations - 648
Ntina Savvidou is an academic researcher from University of Patras. The author has contributed to research in topics: General relativity & Quantum field theory. The author has an hindex of 16, co-authored 53 publications receiving 595 citations. Previous affiliations of Ntina Savvidou include Imperial College London.
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Time-of-arrival probabilities and quantum measurements
TL;DR: In this article, the authors study the construction of probability densities for time-of-arrival in quantum mechanics, based on the fact that time appears in quantum theory as an external parameter to the system, and propositions about the time of arrival appear naturally when one considers histories.
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Time-of-arrival probabilities for general particle detectors
TL;DR: In this article, a general framework for the construction of probabilities for the time of arrival in quantum systems is developed, which is embedded within the larger issue of defining probabilities with respect to time for general quantum transitions.
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Poincaré invariance for continuous-time histories
TL;DR: In this paper, the relativistic analog of the two types of time translation in a nonrelativistic history theory is the existence of two distinct Poincare groups, i.e., the internal and external groups.
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Histories approach to general relativity: II. invariance groups
TL;DR: In this article, the authors show how the histories description of general relativity carries representations of both the spacetime diffeomorphism group and the Dirac algebra of constraints, and 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.
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General relativity histories theory I: The spacetime character of the canonical description
TL;DR: In this article, the problem of time in canonical quantum gravity is solved in the histories formulation of general relativity using metric-dependent foliations which remain spacelike with respect to all possible Lorentzian metrics.