Learned at a conference a couple of days ago that our Ising model proposed in 2017 to describe collective U-turns in fish schools could now be labelled as a 'non-reciprocal Ising model'; how cool that there is a name for this class of models -- meaning it is of interest for physicists!

Our early non-reciprocal Ising model: https://doi.org/10.1098/rspb.2018.0251 🐟

#physics #ising #CollectiveBehaviour #fish

Emergent Equilibrium in All-Optical Single Quantum-Trajectory Ising Machines

https://arxiv.org/abs/2412.12768

#physics #ising #isingmodel #isingmachines #quantumphysics #quantum

We investigate the dynamics of multi-mode optical systems driven by two-photon processes and subject to non-local losses, incorporating quantum noise at the Gaussian level. Our findings show that the statistics from a single Gaussian quantum trajectory exhibit emergent thermal equilibrium governed by an Ising Hamiltonian encoded in the dissipative coupling between modes. The driving strength sets the system's effective temperature relative to the oscillation threshold. Given the ultra-short time scales typical of all-optical devices, our study demonstrates that such multi-mode optical systems can operate as ultra-fast Boltzmann samplers, paving the way toward the realization of efficient hardware for combinatorial optimization, with promising applications in machine learning and beyond.

the #Droitwich #iSing #Choir performing #Elbow’s #OneDayLikeThis at the town’s #SaltFest yesterday: great to see locals of different ages and abilities performing together.

I hear their soloist was pretty good too!

Have to brush up 🧹 my Monte Carlo knowledge for an interview. Turns out, the exact definition of a Monte Carlo method/simulation is somewhat subjective.

However, when looking for a cool gif I found this neat #julia package: https://github.com/genkuroki/Ising2D.jl

Thanks @genkuroki for building it 😃

#Ising #compphys #MonteCarlo

Could One #Physics #Theory Unlock the #Mysteries of the #Brain?

https://www.youtube.com/watch?v=hjGFp7lMi9A&ab_channel=QuantaMagazine

#PerBak #PhilosophyOfScience #Science #Neuroscience #Biology #MolecularBiology #Thermodynamics #SellfSimilar #ScaleInvariance #Fractal #Fractals #CriticalPoint #Criticality #Ising #IsingModel #PhaseState #PhaseTransition #PhaseTransitions #Homeostasis #QuasiCrticality