A long-standing folklore result in the field of tensor networks now has a proof: arxiv.org/abs/2603.28349

Intertwining Markov Processes via Matrix Product Operators Duality transformations reveal unexpected equivalences between seemingly distinct models. We introduce an out-of-equilibrium generalisation of matrix product operators to implement duality transformat...

Dualities relating equilibrium and non-equilibrium processes: MPOs are everywhere! arxiv.org/abs/2603.09928

Indeed, classical physics is even harder!

Why Nobody Understands Quantum Physics by Frank Verstraete Find out more about Why Nobody Understands Quantum Physics by Frank Verstraete

Headlines fade, but the wavefunction flows on! Happy that the book "Why Nobody Understands Quantum" is available in the US as of today.
www.panmacmillan.com/authors/fran...

Les Houches Lectures Notes on Tensor Networks Tensor networks provide a powerful new framework for classifying and simulating correlated and topological phases of quantum matter. Their central premise is that strongly correlated matter can only b...

Although 2025 was absolutely shocking in terms of the cruelty of powerful people, science can still be a refuge from it. A highlight for me was retreating to the mountains to teach at the Les Houches Summer School. Here are my lecture notes: arxiv.org/abs/2512.24390

One of my favourite tensor-network diagrams keeps on giving (from arxiv.org/abs/2511.04674 ):

Perfect Particle Transmission through Duality Defects arxiv.org/abs/2510.26780 : manifestations on the lattice of one of the most intriguing results in conformal field theory.

Philip Anderson, more than any other physicist, helped pivot theoretical physics away from reductionism toward emergence as a guiding principle. Yet almost no popular-science books explore this crucial shift—an exception is www.panmacmillan.com/authors/fran... . An excerpt:

What if all the laws that we know are just effective laws, valid at certain length scales? Isn't that emergence? And does that not mean that reductionism is impossible, as we will never be able to know the real laws that lie at the origin of this flow?

From a friend of my bikig club: "Clearly, Martinis would have gotten nowhere without the help of Clarke"

The 2025 Nobel Prize in Physics, awarded for macroscopic quantum mechanical tunneling, is a perfect example of emergent phenomena in action. It’s also one of the key reasons we wrote our book www.panmacmillan.com/authors/fran...
— because no other popular science book talks about this.

Gauging versus dualities: equivalent up to constant depth quantum circuits. arxiv.org/abs/2509.22051

New tensor network-based approach could advance simulation of quantum many-body systems The quantum many body problem has been at the heart of much of theoretical and experimental physics over the past few decades. Even though we have understood the fundamental laws that govern the behav...

phys.org/news/2025-09...

Trading Mathematical for Physical Simplicity: Bialgebraic Structures in Matrix Product Operator Symmetries Despite recent advances in the lattice representation theory of (generalized) symmetries, many simple quantum spin chains of physical interest are not included in the rigid framework of fusion categor...

The simpler the physics, the more non-simple the math: new insights into the structure of MPO symmetries arxiv.org/abs/2509.03600

Entanglement and the density matrix renormalization group in the generalized Landau paradigm Nature Physics - Quantum spin chains can be represented in several ways, and eigenstates in these dual models have different entanglement structures. By characterizing the dual theories, the...

Ground states in (topological) phases of quantum spin chains have unique dual descriptions in terms of much less entangled completely symmetry broken ones: a synergy of fusion category and physics. rdcu.be/eAVWm

Why does nobody understand quantum physics? With Frank Verstraete and Céline Broeckaert

Was fun to record a podcast for @intelligence2.bsky.social with the wonderful host Shini Somara on our book "Why nobody understands quantum physics": scientists and writers, unite! open.spotify.com/episode/6sBG...

Finally, a book that does justice to the hidden heroes of #quantum physics: Landau, Anderson, Wilson i.e., cond. mat. physics community. Symmetry breaking & renormalization, concepts which unite #physics. It includes key papers from many-body physics (see timeline). Looking forward to reading it!!

The book launch took place at the magnificent Royal Institution (@ri-science.bsky.social), the cradle of science popularization.

Happy to see our book "Why Nobody Understands Quantum Physics" published in English www.panmacmillan.com/authors/fran.... Unlike other popular science books, we explain quantum and its applications in the way working physicists use and understand them, without shying away from the many-body problem.