Condensed concepts

I recently learnt that Rodney Baxter died earlier this year. He was adept at finding exact solutions to two-dimensional lattice models in st...

 This week Nobel Prizes will be announced. I have not done predictions since 2020 . This is a fun exercise. It is also good to reflect on w...

It is that time of year again. My physics predictions are the same as last year. For physics this year I predict Experiments for testing Bel...

The Kondo effect is a paradigm for quantum many-body physics. It has so much: non-perturbative effects, scaling, emergent energy scales, Bet...

I am looking forward to reading Andrew Zangwill's book,  A Mind Over Matter: Philip Anderson and the Physics of the Very Many , that sh...

Phil Anderson died two weeks ago. There have been many obituaries, including at The New York Times , Not Even Wrong  (Peter Woit), and Nanos...

I was sad to hear last week of the death of John Wilkins . He was a mentor to a whole generation of condensed matter physicists and a genero...

It is that time of year again. I have not made predictions for a few years. For physics this year I predict Experiments for testing Bell ...

Bob Schrieffer died last month, as reported in a New York Times obituary. Obviously, Schrieffer's biggest scientific contribution was ...

An important and fascinating issue in many-body physics is the emergence of new energy scales, particularly scales that are orders of magni...

One of the most fundamental and profound concepts in quantum many-body theory is the emergence of low energy scales  that are much smaller t...

In clean elemental metals the mean free path is much larger than the lattice constant and the Fermi wavelength. This means that an electr...

Liquid 3He is amazing stuff. Below temperatures of a few hundred milliKelvin it forms a model (and the original inspiration for) Landau Ferm...

And why is it so elusive? Quantum many-body systems are characterised by many different energy scales (e.g. Fermi energy, Debye frequency,...

There is an interesting paper Quantum critical dynamics of a magnetic impurity in a semiconducting host Nagamalleswararao Dasari, Swagata ...

When is a phenomena truly emergent? Is there some objective quantitative criteria that one might use to decide? This is an issue becaus...

One of the most fascinating, challenging, and frustrating aspects of the iron-based superconductors is the presence of many competing energy...