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Meaning = Information + Evolution
Carlo Rovelli
Notions like meaning, signal, intentionality, are difficult to relate to a physical word. I study a purely physical definition of "meaningful information", from which these notions…
The Good, the Bad, and the Ugly of Gravity and Information
Gerard 't Hooft, Steven B. Giddings, Carlo Rovelli +4
Various contenders for a complete theory of quantum gravity are at odds with each other. This is in particular seen in the ways they relate to information and black holes, and how…
The dangers of non-empirical confirmation
Carlo Rovelli
In the book "String Theory and the Scientific Method", Richard Dawid describes a few of the many non-empirical arguments that motivate theoretical physicists' confidence in a theor…
Statistical discrete geometry
Seramika Ariwahjoedi, Valerio Astuti, Jusak Sali Kosasih +2
Following our earlier work, we construct statistical discrete geometry by applying statistical mechanics to discrete (Regge) gravity. We propose a coarse-graining method for discre…
Quantum Gravity Effects around Sagittarius A*
Hal M. Haggard, Carlo Rovelli
Recent VLBI observations have resolved Sagittarius A* at horizon scales. The Event Horizon Telescope is expected to provide increasingly good images of the region around the Schwar…
Degrees of freedom in discrete geometry
Seramika Ariwahjoedi, Jusak Sali Kosasih, Carlo Rovelli +1
Following recent developments in discrete gravity, we study geometrical variables (angles and forms) of simplices in the discrete geometry point of view. Some of our relatively new…