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Zeeya Merali: on 1/14/14 at 21:18pm UTC, wrote Depending on how familiar you are with FQXi, you may know that we like to...


Eckard Blumschein: "Lorraine, The man-ball system you are consideing has indeed a promoridal..." in Defining the Observer

Gary Simpson: "Akinbo, The definition that you choose for Potential Energy has a value of..." in Defining Existence

Lorraine Ford: "P.S. Eckard, If you believe that you are the logical equivalent of a..." in Defining the Observer

Akinbo Ojo: "Gary, Had a nap and the idea occurred to develop your equation further,..." in Defining Existence

Ted Esaters: "Hi Georgina, Thanks for your remark. I did see some good articles and..." in Quantum Thermodynamics

Georgina Woodward: "Ted, you misrepresent the linked website, there is nothing there about..." in Quantum Thermodynamics

Pentcho Valev: "Why Einstein's Spacetime Is Doomed "Spacetime is any mathematical model..." in What Happens Inside the...

James Putnam: "Steve Agnew, Hi, A correction is in order: "It is the time it takes for..." in Alternative Models of...

click titles to read articles

Rescuing Reality
A "retrocausal" rewrite of physics, in which influences from the future can affect the past, could solve some quantum quandaries—saving Einstein's view of reality along the way.

Untangling Quantum Causation
Figuring out if A causes B should help to write the rulebook for quantum physics.

In Search of a Quantum Spacetime
Finding the universe's wavefunction could be the key to understanding the emergence of reality.

Collapsing Physics: Q&A with Catalina Oana Curceanu
Tests of a rival to quantum theory, taking place in the belly of the Gran Sasso d'Italia mountain, could reveal how the fuzzy subatomic realm of possibilities comes into sharp macroscopic focus.

Dropping Schrödinger's Cat Into a Black Hole
Combining gravity with the process that transforms the fuzzy uncertainty of the quantum realm into the definite classical world we see around us could lead to a theory of quantum gravity.

October 26, 2016

CATEGORY: Blog [back]
TOPIC: String theory vs Loop Quantum Gravity: Bousso and Rovelli FIGHT (backwards) [refresh]
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FQXi Administrator Zeeya Merali wrote on Jan. 14, 2014 @ 21:18 GMT
Depending on how familiar you are with FQXi, you may know that we like to cause a little mischief at our conferences. Knowing that we had famed string theorist Raphael Bousso and Carlo Rovelli, one of the originators of loop quantum gravity, in the same room, we couldn't resist asking them to debate these rivals routes to a theory of quantum gravity.

Both men are passionate about their work and fierce defenders of their own theories. So, of course, we turned the debate upside down and asked them argue the *reverse* position.

So here's LQG proponent Carlo Rovelli explaining why anyone with any sense would be a string theorist, while string theorist Raphael Bousso staunchly defends LQG as the superior theory:

And if you liked that, here are some of our classic mock debates from our previous meeting.

Julian Barbour and Tim Maudlin reverse debate the reality of time:

And David Albert and David Wallace switch positions on the Many World's Interpretation of quantum mechanics:

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