harder to identify because these problems are optimal for a physicist's career

## 100 problems?

- why is superconductivity 2-dimensional in cuprates? One possibility is a role of unscreened Coulomb energy

- [cooling of quantum spin-glasses](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/2415/Zero-temperature_quantum_annealing_bottlenecks_in_.pdf)