18 citations · 18 across the 1 of their papers we have counts for
7 papers
On the quantization of the Null-Surface formulation of GR
Simonetta Frittelli, Carlos N. Kozameh, Ezra T. Newman +2
We define and discuss various quantum operators that describe the geometry of spacetime in quantum general relativity. These are obtained by combining the Null-Surface Formulation…
Fuzzy spacetime from a null-surface version of GR
S. Frittelli, C. N. Kozameh, E. T. Newman +2
The null-surface formulation of general relativity -- recently introduced -- provides novel tools for describing the gravitational field, as well as a fresh physical way of viewing…
Time-of-arrival in quantum mechanics
Norbert Grot, Carlo Rovelli, Ranjeet S. Tate
We study the problem of computing the probability for the time-of-arrival of a quantum particle at a given spatial position. We consider a solution to this problem based on the spe…
Classical analysis of Bianchi types I and II in Ashtekar variables
Gabriela Gonzalez, Ranjeet S Tate
We solve the complex Einstein equations for Bianchi I and II models formulated in the Ashtekar variables. We then solve the reality conditions to obtain a parametrization of the sp…
An algebraic extension of Dirac quantization: Examples
A. Ashtekar, Ranjeet S. Tate
An extension of the Dirac procedure for the quantization of constrained systems is necessary to address certain issues that are left open in Dirac's original proposal. These issues…
An algebraic approach to the quantization of cosntrained systems: finite dimensional examples
Ranjeet S. Tate
From the point of view of canonical quantum gravity, it has become imperative to find a framework for quantization which provides a {\em general} prescription to find the physical…