In the weird world of 2D physics, particles with the same charge—which should push apart—can actually stick together like magnets.
April 15, 2026
Original Paper
Anyon molecules in fractional quantum Hall states
arXiv · 2604.09798
The Takeaway
One of the first things you learn in science is that 'like charges repel.' But this paper proves that in specific 2D quantum states (fractional quantum Hall states), exotic particles called 'anyons' can actually bind together to form 'molecules' even though they share the same charge. This happens because the surrounding electrons 'screen' the charge in a way that creates a weird attractive force. This discovery of 'anyon molecules' is a totally new state of matter that defies basic intuition. It’s significant because these particles are the building blocks for 'topological quantum computers,' which would be much more stable than today’s versions. Nature is apparently much more flexible about its rules in flat, cold environments.
From the abstract
We use segment DMRG on the infinite cylinder to compute energies of charged excitations in gate-screened fractional quantum Hall states. For the $\nu=1/3$ Laughlin, $\nu=2/5$ Jain, and $\nu=5/2$ anti-Pfaffian states, we find screening can bind like-charged anyons into molecules, with a strong dependence on filling-factor, gate distance, and fusion channel. In the Laughlin state, stable $\pm 2e/3$ molecules and larger clusters appear over a broad gate-distance window. The Jain state is molecular