This blog is named The Information Age for a purpose. It is nothing to do with the common sense view of what is information. Instead it aims to provide insights about information in the way it is interpreted in scientific and technological contexts. 3,730 more words

## Tags » Mathematical Physics

#### Spacetime completeness of non-singular black holes in conformal gravity [CL]

http://arxiv.org/abs/1611.00865

We explicitly prove that the Weyl conformal symmetry solves the black hole singularity problem, otherwise unavoidable in a generally covariant local or non-local gravitational theory. 240 more words

#### Initial conditions for cosmological perturbations [CL]

http://arxiv.org/abs/1610.09424

Penrose proposed that the big bang singularity should be constrained by requiring that the Weyl curvature vanishes there. The idea behind this past hypothesis is attractive because it constrains the initial conditions for the universe in geometric terms and is not confined to a specific early universe paradigm. 113 more words

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Review of *Chance and Chaos*

David Ruelle’s book is only 166 pages (excluding the extensive notes). In that space it covers an astonishing number of related topics. However, for a general reader interested in chaos and complexity theory, it’s not the best place to start. 320 more words

#### Quantum physics and representation theory

Unfortunately Grothendieck didn’t examine, that we know of, the foundations of physics although some people suggest that he avoided the subject because he found the foundations to be too non-mathematical, or to put it more directly nonexistent. 248 more words

#### "I most like problems that have a very clear answer" - an interview with Professor Robert Ziff

**Professor Robert Ziff is a theoretical physicist and Professor of Chemical Engineering at The University of Michigan. He is also a member of the…** 1,125 more words