4 papers
Square Root Actions, Metric Signature, and the Path-Integral of Quantum Gravity
A. Carlini, J. Greensite
We consider quantization of the Baierlein-Sharp-Wheeler form of the gravitational action, in which the lapse function is determined from the Hamiltonian constraint. This action has…
Quantum versions of Carlini-Mijić wormholes
A. Carlini, D. H. Coule, D. M. Solomons
We consider the quantum analogues of wormholes obtained by Carlini and Mijić (CM), who analytically continued closed universe models. To obtain wormholes when the strong energy con…
Fundamental Constants and the Problem of Time
A. Carlini, J. Greensite
We point out that for a large class of parametrized theories, there is a constant in the constrained Hamiltonian which drops out of the classical equations of motion in configurati…
Why is Spacetime Lorentzian?
A. Carlini, J. Greensite
We expand on the idea that spacetime signature should be treated as a dynamical degree of freedom in quantum field theory. It has been argued that the probability distribution for…