Ginestra Bianconi
speaker
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 · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.
Appearances
Or even three point of view.
So one point of view is the one of emergence.
So it's the one that, of course, has been...
Possibly the most fundamental approach to statistical mechanics is that from the microscopic degree of freedom, you explain what happens macroscopically.
And this has been fundamental coming from, you know, a pivotal paper by Phil Anderson.
More is different.
But then there is another thought, another line of idea, is that nature, the fundamental aspect of nature is information theory.
And actually this has been put forward by John Wheeler, Eat from Beat.
And so, you know, gravity from entropy comes from this kind of point of view that actually maybe we can have a
statistical mechanics theory for the fundamental degree of freedom of geometry and matter field.
Of course, it might be that, you know, there is a next theory that builds on gravity from entropy and find that is an emergent theory, but for the moment it is conceived as a fundamental theory of geometry.
So instead, and here I come back to what we were saying before, so gravity, instead of being a fundamental interaction in this reductionist approach in which you look at what happens at the interaction when two particles interact, gravity is a reductionist theory in which the object is the geometry itself.
So in this sense,
is similar also to network approaching, which you want to study the interplay between geometry and dynamics.
So entropy can be used to quantify information.
No, it's gravity from entropy because the action is an entropy.
But the entropy captures the information content of the microscopic degree of freedom.
Yes, so in my mind, the metric, this true metric are kind of encoding the degree of freedom of geometry and matter field.
Information is both.
The idea of gravity from entropy is that it captured the information content present in the true metric that can be codified by the metric induced by the matter field and curvature.
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