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- European Organization for Nuclear ResearchCH78 papers
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17 papers · 1 filter
General Relativity Histories Theory
Ntina Savvidou
The canonical description is based on the prior choice of a spacelike foliation, hence making a reference to a spacetime metric. However, the metric is expected to be a dynamical,…
The Basic Elliptic Equations in an Equilateral Triangle
G. Dassios, A. S. Fokas
In his deep and prolific investigations of heat diffusion, Lamé was led to the investigation of the eigenvalues and eigenfunctions of the Laplace operator in an equilateral triangl…
A geometric procedure for the reduced-state-space quantisation of constrained systems
Charis Anastopoulos
We propose in this paper an alternative method for the quantisation of systems with first-class constraints. This method is a combination of the coherent-state-path-integral quanti…
Minisuperspace Models in Histories Theory
Charis Anastopoulos, Ntina Savvidou
We study the Robertson-Walker minisuperspace model in histories theory, motivated by the results that emerged from the histories approach to general relativity. We examine, in part…
Ricci flows and their integrability in two dimensions
Ioannis Bakas
We review the main aspects of Ricci flows as they arise in physics and mathematics. In field theory they describe the renormalization group equations of the target space metric of…
A proposal for the implementation of quantum gates with photonic-crystal coupled cavity waveguides
Dimitris G. Angelakis, Marcelo Franca Santos, Vassilis Yannopapas +1
Quantum computers require technologies that offer both sufficient control over coherent quantum phenomena and minimal spurious interactions with the environment. We show, that phot…