M. Kasiulis @quasiulysse.bsky.social · 18/09/2026And actually, for the Korean physicists around here, today and tomorrow I have the pleasure of not just attending, but also of giving a lecture at the monthly meeting of the KPS statistical physics meeting at UNIST -- which has a very misty mountain vibe today 🗻🧙🏻♂️ 130
M. Kasiulis @quasiulysse.bsky.social · 18/09/2026I have been quieter while settling but it's official, my own research group is now operational at APCTP! The East Asian campus vibe is a nice change of pace from NYC too 🌏🌏 032
M. Kasiulis @quasiulysse.bsky.social · 13/08/2026I have a confession to make: I was reviewer #2 all along 👹 It is both a pleasure and an honor to receive a Reviewer Excellence Award from Physical Review E. We seldom advertise this aspect of our job, in spite of peer review being vital to science. Thanks, PRE editors! www.aps.org/funding-reco...aps.orgAPS Reviewer Excellence AwardThis award acknowledges reviewers who have recently made exceptional contributions to peer review for the APS journals. 021
M. Kasiulis @quasiulysse.bsky.social · 24/06/2026Life update! Starting in September 2026, I will be starting my ✨own group✨ at the Asia-Pacific Center for Theoretical Physics (APCTP) in 🇰🇷South Korea🇰🇷! Which means that I am looking for postdocs in the fields of statistical physics and/or complex dynamical systems! www.apctp.org/bbs/board.ph...apctp.orgapctpPostdoctoral Position in “Complexity, Dynamics & Disorder Group" Group > 채용공고 | apctp 482
M. Kasiulis @quasiulysse.bsky.social · 06/04/2026Today on arxiv, a blast from the past: Hamiltonian flocks! Some years ago we showed that this conservative model could support collective motion. In this preprint, I discuss how to properly couple the model to a bath and the effects of time-reversal symmetry in it! arxiv.org/abs/2604.02914arxiv.orgHamiltonian flocks: Time-Reversal Symmetry and its consequencesThe fluctuation-dissipation theorem is a hallmark of equilibrium system that stem from their time-reversal symmetry. In many non-equilibrium systems, in particular active ones, extensions and explicit... 183
M. Kasiulis @quasiulysse.bsky.social · 14/11/2025It is an honor and a pleasure to be spontaneously featured in Optica's official outreach platform! Many inspiring papers published in Optica's journals were read in the making of this work, so it feels like a nice loop 😄 www.optica-opn.org/home/newsroo...optica-opn.orgGyromorphs Should Block Light in All DirectionsSimulated materials yield isotropic band gaps, suggesting use in optical computer chips. 031
M. Kasiulis @quasiulysse.bsky.social · 13/11/2025New preprint! So, say you're studying some critical transition. How do you catch its universality? Pair correlations? Boring! We threw line segments at the system, looked at intersections with clusters, and uncovered static and dynamical universal behavior of MIPS! arxiv.org/abs/2511.09444media.tenor.coma close up of a person 's hand holding a marker that says sharpieAlt: a close up of a person's hand holding a marker that says sharpie 163
M. Kasiulis @quasiulysse.bsky.social · 07/11/2025New paper just out, as an editor's suggestion in PRL! While looking for the ideal isotropic bandgap material, we actually discovered new structures. These structures lie at the border between order and disorder, and that's good for optics! More about their structure here, tinyurl.com/3aej53ht ⚛️🧪 183
M. Kasiulis @quasiulysse.bsky.social · 08/09/2025Well, not everyone can get a vote of confidence -- but this paper did! New PNAS, 🔥🔥🔥 hot from the press 🔥🔥🔥 And it is an opportunity to thank my collaborators on this project, special shout-out to Eden+Matan for the experiments on robots that motivated this! www.pnas.org/doi/10.1073/...pnas.orgA geometric condition for robot-swarm cohesion and cluster–flock transition | PNASWe present a geometric design rule for size-controlled clustering of self-propelled particles. We show that active particles that tend to rotate un... 061
Reposted by M. KasiulisAnthony Moser @anthonymoser.com · 26/04/2025A key difference here is that while either can be incorrect, the structure of Wikipedia *creates context* and the structure of LLMs *destroys context* Wikipedia has linked sources and an edit history showing where information came from and who added it when An LLM just generates text 5740491213
Reposted by M. KasiulisDr. Jonathan Foley @globalecoguy.bsky.social · 10/02/2025We need to see science as a social compact where it serves the larger world, not our own interests. As a first step, scientists must communicate to the larger world much better. I wrote an essay about this in 2016, which still holds today. globalecoguy.org/science-comm...globalecoguy.orgScience Communication as a Moral ImperativeWe need to do a much better job of encouraging scientists to be stronger communicators, and share the wonders of science, and the important… 58323
M. Kasiulis @quasiulysse.bsky.social · 20/11/2024Ok, last update: how to make isotropic bandgaps? At low index contrast, the answer is aperiodic structures, e.g. quasicrystals. We propose that the best material would have a structure factor as close as possible to being just one ring of high values: enter gyromorphs. arxiv.org/abs/2410.09023 1111
M. Kasiulis @quasiulysse.bsky.social · 19/11/2024Next up: for a change of scenery, let's look at energy landscapes! We showed that numerical commonly used to study the location, energy, and entropic bias of minima in jammed soft spheres completely destroy the geometry of the landscape, and provide an alternative. arxiv.org/abs/2409.121... 143
M. Kasiulis @quasiulysse.bsky.social · 18/11/2024Ok let's keep going with updates! This time no point patterns, only robots 🤖 We show that it really matters how their mass is distributed to know how they behave as a collective... Depending on whether they have a heavy head or a heavy back, robots flock or cluster! arxiv.org/html/2409.04...arxiv.orgA geometric condition for robot-swarm cohesion and cluster-flock transition 151
M. Kasiulis @quasiulysse.bsky.social · 12/11/2024Oh and actually, I almost forgot, I will be in Paris this December to talk about spectrally-shaped point patterns, FReSCo, and hyperuniformity at the Hyperuniformity workshop organized by Inria! hyperuniformity.sciencesconf.orgmedia.tenor.coma nun in front of a chalkboard with the words we are going to franceAlt: A nun in front of a chalkboard with the words we are going to France. Like me. In December. I'm going to France. The land of baguettes, PNL, and Inria workshops. So uh, if you are in Paris and want to say hello and/or talk about my work please reach out! 061
M. Kasiulis @quasiulysse.bsky.social · 12/11/2024Ok so it's been an eventful couple of months or so for me! Let's recap a bit. First, our work on spectral optimization of point patterns is actually out as an Editor's Suggestion in PRE! If you care about correlated disorder, this is probably a good read! journals.aps.org/pre/abstract...journals.aps.orgFast generation of spectrally shaped disorderSystems with correlated disorder can display unusual optical properties, but it is a challenge to design such structures with desired long-range correlations. The authors introduce an efficient algori... 142
M. Kasiulis @quasiulysse.bsky.social · 07/11/2024Hey everyone! I decided I would come back on social media a bit more in the near future, partly because I am now on the ✨Job Market✨ Since I had left the bad place for good already I took the time to re-follow a lot of you. I hope we can rebuild a vibrant interdisciplinary academic community here!media.tenor.coma cartoon of a robot with the words time to research above itAlt: a cartoon of a robot with the words time to research above it 061
M. Kasiulis @quasiulysse.bsky.social · 19/12/2023Hey, ever wanted to make point patterns or particle packings but with that one specific kind of correlation you care about? Worry not, FReSCo is now officially out there on GitHub! github.com/martiniani-l...github.comGitHub - martiniani-lab/FReSCo: Fast Reciprocal Space CorrelatorFast Reciprocal Space Correlator. Contribute to martiniani-lab/FReSCo development by creating an account on GitHub. 020
M. Kasiulis @quasiulysse.bsky.social · 15/12/2023Is that... a paper update? 👀 After months of extra work, our FReSCo framework to embed arbitrary spectral properties into point patterns has greatly expanded! Threads aren't a thing here so I'll be short: dynamics of points go CHOO CHOO in Fourier space! 🚂 shorturl.at/fjkn6 arxiv.org/abs/2305.15693shorturl.atThe Arrival of a Train in Fourier SpaceFrames from the Lumière movie L’Arrivée d’un Train en Gare de La Ciotat (1896), imposed into the structure factor of a pattern of N=300,000 points using FReS... 030
M. Kasiulis @quasiulysse.bsky.social · 04/12/2023Very nice illustration and proof that high-dimensional basins of attraction are shaped like urchins today on the cover of PRL! journals.aps.org/prl/abstract... Nice throwback to our perspective on how to compute their volumes too! More on that soon™️ 👀 www.papersinphysics.org/papersinphys...journals.aps.orgStar-Shaped Space of Solutions of the Spherical Negative PerceptronThe solutions of a nonconvex over-parametrized neural network model are geodesically connected in a star-shaped geometry. 010
M. Kasiulis @quasiulysse.bsky.social · 01/10/2023A last look at the Alps after a fantastic two weeks at Les Houches -- with a nice Kelvin-Helmholtz instability waving goodbye 🌊 Kudos to the organizers, it's been a fantastic two weeks! 030
M. Kasiulis @quasiulysse.bsky.social · 19/09/2023After a few years away from both Europe and optics, what better way to reconnect than going to Les Houches? 😄🏔️ And yes, spoiler alert, photonics is coming back to my research very soon 👀 010
Reposted by M. KasiulisPhysics Magazine @physicsmagazine.aps.org · 12/09/2023If astronomers truly believe “the night sky belongs to everyone,” we should honor that ideal when naming objects in the cosmos. Our job is to tell the Universe's story, and as with all stories, the way we tell it matters, Mia de los Reyes @amherstcollege.bsky.social. physics.aps.org/articles/v16...physics.aps.orgAstronomers Need to Rename the Magellanic CloudsA coalition of astronomers calls for renaming the Milky Way’s two brightest satellite galaxies, along with other astronomical objects and facilities that bear the name of a Portuguese explorer who m... 013
M. Kasiulis @quasiulysse.bsky.social · 05/09/2023You may know that 2d solids are almost a field of their own... But it gets even crazier with activity! Find out how activity shatters equilibrium bounds in a great piece of work now out in PRL - or in my first commentary in Physics Magazine 🤗 physics.aps.org/articles/v16...physics.aps.orgActive Particles Push the Boundaries of Two-Dimensional SolidsActive particles can form two-dimensional solids that are different from those formed by nonmotile particles, showing long-range crystalline order accompanied by giant spontaneous deformations. 012
M. Kasiulis @quasiulysse.bsky.social · 05/09/2023Hello world! You may know me from The Bad Place, I will likely move my main research and Scicomm updates here, I'm excited to see how this platform will evolve 😄 080