Tags » Loop Quantum Gravity

Semiclassical states in quantum gravity: Curvature associated to a Voronoi graph by Daz-Polo and Garay

This week I’ returning to a much more fundamental level and reviewing a paper on Voronoi graphs. These are a method of dividing up a space into triangles and my very early work on this blog was looking at random triangulations. 1,547 more words

Quantum Tetrahedron Papers

Curvature operator and gravity coupled to a scalar field: the physical Hamiltonian operator by Alesci, Assanioussi and Lewandowski

This week I been reviewing some conference proceedings the FFP14 Conference, Marseilles 2014. One paper I particularly like is this one by Alesci, Assanioussi and Lewandowski. 530 more words

Loop Quantum Gravity

The Spinfoam Framework for Quantum Gravity by Livine

This post looks at  the part of Livine’s  great PhD thesis about the quantum tetrahedron.

Below is a table from this thesis looking at the types of structures found in… 440 more words

Loop Quantum Gravity

Science Is Not About Certainty

The separation of science and the humanities is relatively new—and detrimental to both

By Carlo Rovelli.  Excerpted from The Universe: Leading Scientists Explore the Origin, Mysteries, and Future of the Cosmos.  525 more words


Spin-Foams for All Loop Quantum Gravity by Kaminski ,Kisielowski and Lewandowski

This week I return more directly to work connected to the Hamiltonian constraint operator and look at an important paper on the spin-foam formalism.

In this paper the simplicial framework of Engle-Pereira- 1,172 more words

Quantum Tetrahedron Papers