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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: "Rob, Writing [FT] ”is applicable to ALL data, past, present and future...." in Quantum Coherence =...

Steve Agnew: "It is interesting to me that you keep bringing up the definition of the..." in Conjuring a Neutron Star...

Steve Dufourny: "Mr Tegmark can make the multispheres if he wants :) but please play in a..." in In Praise of Physics...

Steve Dufourny: "a bridge in geometrical algebras ???? :) all my net is checked even here..." in In Praise of Physics...

Robert McEachern: "Eckard, I do understand your point. But I do not see the point as being of..." in Quantum Coherence =...

Jan Mazuch: "Dear David Wolpert , As you said: Inference devices are physical machines..." in Inferring the Limits on...

Jan Mazuch: "Dear all, Because simple rotation creating g forces and time dilatation is..." in Conjuring a Neutron Star...

paul valletta: "Amrit..take a look at Picasso's early work prior to 1909 ?..not a hint of..." in Inferring the Limits on...

click titles to read articles

Conjuring a Neutron Star from a Nanowire
Using tiny mechanical devices to create accelerations equivalent to 100 million times the Earth’s gravitational field—mimicking the arena of quantum gravity in the lab.

Inferring the Limits on Reality (that Even the Gods Must Obey)
The fuzziness of the quantum realm could arise from mathematical restrictions on what can ever be known.

The Quantum Thermodynamic Revolution
Combining theories of quantum information with the science of heat and energy transfer could lead to new technologies.

Face Off: Building a Toy Universe to Pit Quantum Theory Against Gravity
Using superconducting circuits to create a curved-spacetime analog with stronger gravity than our cosmos.

Is Gravity Time's Archer?
A new model argues the forces between particles in the early universe loosed time's arrow, creating temporal order from chaos.

August 1, 2015

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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