Ginestra Bianconi

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345 appearances 1 recordings 1 series first heard Jul 2026 last heard 13 Jul

Ginestra Bianconi’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.

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Theories of Everything with Curt Jaimungal · Ginestra Bianconi: The Physicist Who (Unexpectedly) Derived Gravity From Entropy · 13 Jul 2026 podcast

So it's not that I will not think about turning gravity from entropy into a continuum in discrete theory.

But for the moment, I like the continuum because the mathematical quantities are well-defined and conceptually, I can focus on the innovation of the idea.

Yes, so I was setting up a challenge that I think is urgent and emerging in the context of complexity and natural theory.

That is a comprehensive theory, which includes addressing the interplay between structure and dynamics using topology and geometry and viewing this under the lens of information theory.

So I strongly believe that the advance in this context will be very important for the theory of complexity.

But I think that also, you know, mathematically speaking, the problem are common with the interplane between geometry and matter field in gravity.

So gravity from entropy is a new theory that stems from an action.

And this action quantify the information content of what are the microscopic degree of freedom of the universe, essentially.

And the idea is to describe this information content of this matter and geometrical degree of freedom using the metric.

So you have two metrics, the true metric of space-time and the metric induced by the matter field and curvature.

And the action, that is the gravity from entropy action, describes this interplane between matter and geometry by using as Lagrangian

what I call a geometric quantum relative entropy between these two metrics.

So you have a tension between these two metrics that's trying to be close to each other.

So it's like the matter field telling the metric how they would like to see the true metric and the true metric telling the matter field how to move.

And this is essentially, you know, is building on our insight of Einstein's equation.

But actually, Einstein's equation has this interplane, as beautifully summarized by John Wheeler, but this interplane is not expressed at the level of the action.

So instead, gravity from entropy leveraged this principle of the interplane between matter and geometry to

already at the level of reaction with this information theory Lagrangian.

Yes.

So it's that...

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