*Written by Jesper Møller Grimstrup, an independent danish theoretical physicist. He has collaborated with the mathematician Johannes Aastrup for more than a decade developing what they now call quantum holonomy theory.* 968 more words

## Tags » Loop Quantum Gravity

#### The possible emptiness of a final theory

#### From Ethan Siegel: "Dimensional Reduction: The Key To Physics' Greatest Mystery?"

From Ethan Siegel

Jul 26, 2016

Sabine Hossenfelder

A visualization of a 3-torus model of space, where lines or sheets in series could reproduce a larger-dimensional structure. 1,403 more words

#### Book review: Covariant Loop Quantum Gravity, an elementary introduction to quantum gravity and spinfoam theory

**Review of “Covariant Loop Quantum Gravity, an elementary introduction to quantum gravity and spinfoam theory” by Carlo Rovelli and Francesca Vidotto**

One of the central problems of contemporary physics is finding a theory that allows for describing the quantum behavior of the gravitational field. 1,133 more words

#### Why So Complicated?

From: Danish researchers looking to crowdfund ‘Theory of Everything’

Never to be a jerk about it, but I’m already dissuaded, based upon the annotation under the main post image there… 1,504 more words

#### Book Review: The Singular Universe and the Reality of Time

**Review of “The Singular Universe and the Reality of Time” by Roberto Mangabeira Unger and Lee Smolin**

*The Singular Universe* is effectively two separate books held together by some common ideas. 2,401 more words

#### From Quanta: "String Theory Meets Loop Quantum Gravity"

January 12, 2016

Sabine Hossenfelder

Eight decades have passed since physicists realized that the theories of quantum mechanics and gravity don’t fit together, and the puzzle of how to combine the two remains unsolved. 1,902 more words