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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...


Thomas Ray: "" ... eternal is in NOW - instant" An instant isn't symmetrical?" in The Quantum Pet Store:...

Jim Snowdon: "We are permanently in the `now`. Everything that has ever happened,..." in Q&A with Paul Davies:...

Thomas Ray: "" ... when they don't match, modern science assumes some new force of..." in Why Quantum?

Amrit Sorli: "there is no time symmetry, time has only a mathematical existence as..." in The Quantum Pet Store:...

Eckard Blumschein: "Tom, I apologize for hurting the feeling of all those who are included in..." in Why Quantum?

Thomas Ray: "" ... Information is not objective, belonging nowhere, just somehow..." in Your Invitation to FQXi's...

Shad Williams: "I thought string theory incorporated gravity by identifying the graviton as..." in The Quantum Dictionary

Amrit Sorli: "It is an utter mistake to compare universe and life with man-made machines..." in An Accidental Universe

click titles to read articles

Quantifying Occam
Is the simplest answer always the best? Connecting Medieval monks to computational complexity, using the branch of mathematics known as category theory.

Heart of Darkness
An intrepid physicist attempts to climb into the core of black hole.

Why Quantum?
Entropy could explain why nature chose to play by quantum rules.

Reality's NeverEnding Story
A quantum version of Darwinian natural selection could enable the universe to write itself into being.

The Quantum Dictionary
Mark Van Raamsdonk is re-writing how we define the shape of our universe. Can such translations help to unite quantum theory and gravity?

September 1, 2014

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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