Dynamics of O(2) excitations in a non-reciprocal medium We investigate emergent dynamics due to non-reciprocity in the $\mathcal{O}(2)$ model. The lattice XY model, where non-reciprocity stems from vision cone like couplings, can be described by a continuu...

👉 How does non-reciprocity reshape the dynamics of the O(2)-2dXY model? it controls trajectories & stability of excitations, described by a Burgers eq. A step towards pattern control in active matter. By YRouzaire with
DPearce IPagonabarraga @demianlevis.bsky.social
arxiv.org/abs/2603.23225

EU DN "A Coherent Analysis Framework for Emergence in Biological Systems" (CAFE-BIO) is recruiting 15 PhDs in 12 institutions eg @ubics.bsky.social @ub.edu. #statphys for #bio and #complex problems. Gain international experience with academic and industry secondments.
more info: cafe-bio.org

Our first experimental paper has just been published 🥳! We show that motorized toys are a great experimental model system to study chiral #activematter. Exact calculations reproducing experimental results with no fitting parameter @ubics.bsky.social journals.aps.org/pre/abstract...

Avalanches in active glasses with finite persistence We numerically investigate the statistics of avalanches in glassy systems of active particles with finite persistence, with and without an externally applied shear. In departing from the infinite-pers...

arxiv.org/abs/2512.00523

👉New preprint on avalanches in active glasses with finite persistence time. Universal behaviour of avalanches triggered by activity vs. triggered by shear: self-propulsion modulates the size of plastic events. With @ezeferrero.bsky.social #RWiese @demianlevis.bsky.social @ubics.bsky.social

Very excited to see this work out! Mixtures of active colloids, clustering, de-mixing, collective dynamics and all that. Great experiments by @lauraal.bsky.social with Lucio Isa @ethz.ch Elena Sesé and Ignacio Pagonabarraga #activematter #softmatter
--> arxiv.org/abs/2506.15188

Com s'organitza el món? - La UB Divulga - UB Taller de la XI Festa de la Ciència de la Universitat de Barcelona.

Hi ha ordre a la natura? 🍃 Si és així, quin és aquest ordre i com es manifesta? Ho descobrirem a la #FestaCiènciaUB amb l’ajuda de joguines robòtiques 🤖 web.ub.edu/ca/web/laubd... @cuca-lab.bsky.social @ubics.bsky.social

🚨 New paper out in #JSTAT : non-reciprocal Ising spins:
🧲 "Vision-cone" interactions (no multi-species)
🔥 1st & 2nd order phase transitions
🌀 Anisotropic coarsening
PhDwork of AGarces @demianlevis.bsky.social @ubics.bsky.social @ub.edu
iopscience.iop.org/article/10.1...
#StatMech #ComplexSystems

🚨 New paper in PRL: journals.aps.org/prl/abstract...
-> motion induces a topological phase transition in 2D systems of Kuramoto oscillators with random frequencies 🌀 w YRouzaire PRahmani FPeruani IPgagonabarraga @demianlevis.bsky.social @ubics.bsky.social @ub.edu #ComplexSystems #ActiveMatter

Published in #PhysRevLett! How nonreciprocity affects the behaviour of topological defects? they are reshaped, their annihilation can be enhanced or hindered, +1 -1 charges move differently. PhD work of YRouzaire @ub.edu @ubics.bsky.social with @demianlevis.bsky.social IPagonabarraga and DPearce.

What a great week! The 1st Barcelona School on non-equilibrium stat phys has been really successful. Thanks to C Calero, F Ritort, the students and all attendees sponsors and mostly, our 5 Lecturers. #statphys #bcnschoolneqstatphys

Congratulations to Mehran Kardar and Yoshiki Kuramoto, 2025 Boltzmann medalists! 🥳

The first paper of the Lab is on the cover of Soft Matter! @softmatter-journal.bsky.social
pubs.rsc.org/en/Content/A...
Collective motion of particles with an energy depot JPMIranda @demianlevis.bsky.social and @chantalvaleriani.bsky.social. #activematter #statmech

Está BRUTAL esta nueva técnica de ByteDance (los de TikTok) 😱

Se trata de Omnihuman-1, una IA multimodal que soporta imagen, video y audio, y la gracia es que permite crear videos de personas en cualquier relación de aspecto, y en cualquier proporción del humano (ej: cuerpo completo, retrato, etc)