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Ramón Nartallo-Kaluarachchi

@rnartallo.bsky.social
64 followers 87 following 36 posts

Postdoc at DAMTP, University of Cambridge. Interested in complex systems, stat phys, machine learning, and applications to biology and neuroscience. www.rnartallo.co.uk

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Reposted by Ramón Nartallo-Kaluarachchi
Oxford Mathematics @oxfordmathematics.bsky.social · 24/09/2026
There are two compelling reasons to join us as a Hooke/Titchmarsh Research Fellow. You'll be part of a cohort of leading researchers on fellowships with whom you can share ideas. But as importantly you'll be free to pursue an independent research programme of your own. www.maths.ox.ac.uk/node/82502
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Reposted by Ramón Nartallo-Kaluarachchi
Gresham College @greshamcollege.bsky.social · 16/09/2026
Gresham Prof, @alaingoriely.bsky.social has debunked the myth that the Parthenon included deliberate optical illusions in @theguardian.com bit.ly/parthenon-il... Check out his lecture on the #maths of actual optical illusions: gres.hm/deceived-brain #ancientgreece #GreshamCollege
bit.ly
UK mathematician debunks myth around Parthenon’s optical illusions
Study challenges belief that temple’s curves were designed to correct optical illusions that would have ruined its clean lines
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Reposted by Ramón Nartallo-Kaluarachchi
Alain Goriely @alaingoriely.bsky.social · 06/09/2026
A wonderfully refreshing story showing that math is both about the result and the joy of the discovery (something that seems to be lost in the age of AI). The 92-Year-Old Mathematician and the Teenage Apprentice www.nytimes.com/2026/09/06/s...
nytimes.com
The 92-Year-Old Mathematician and the Teenage Apprentice
Joan Birman thought her major discoveries were behind her. Then came an email from a young neighbor — a girl who knew little but wanted to learn.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 19/06/2026
I was really pleased to be invited to speak at #BrainNet2026 last month in Stockholm. The video of my talk has been made available online: www.youtube.com/watch?v=kLV-... Thanks again to the organisers and all the attendees for a great workshop!
youtube.com
Ramón Nartallo-Kaluarachchi - Nonequilibrium physics of brain network dynamics
YouTube video by BrainNet
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 09/04/2026
If you are interested in stochastic systems, check out this popular summary of our recent paper on the Maths Institute website: www.maths.ox.ac.uk/node/80941
maths.ox.ac.uk
Coarse-graining Brownian dynamics - a case study by Ramón Nartallo-Kaluarachchi | Mathematical Institute
\[ dx(t) = f(x)\,dt + \sigma(x)\,dw(t) \]
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 31/03/2026
This work has now been published in JSTAT: iopscience.iop.org/article/10.1... If you are interested in complex systems and stochastic processes out of equilibrium, please take a look!
iopscience.iop.org
Coarse-graining nonequilibrium diffusions with Markov chains
Coarse-graining nonequilibrium diffusions with Markov chains, Nartallo-Kaluarachchi, Ramón, Lambiotte, Renaud, Goriely, Alain
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 25/03/2026
This May, I will giving a talk at BrainNet in Stockholm. brainnet26.github.io Many thanks to the organisers for the the invite. It promises to be a great workshop.
brainnet26.github.io
BrainNet 2026
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Reposted by Ramón Nartallo-Kaluarachchi
Alain Goriely @alaingoriely.bsky.social · 23/03/2026
As part of this grant I will be looking soon for a Post-doc in Oxford to model nano-morphogenesis. Please RT and contact me directly if it is a good match for you.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 17/03/2026
It was wonderful to return to Wilson's School yesterday to give a talk as part of their Maths Circle Lectures. I got to introduce some brilliant GCSE and A Level students to stochastic dynamics and complex systems, with some neuroscience thrown in. Thanks to the Maths dept for the invite!
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Reposted by Ramón Nartallo-Kaluarachchi
Miguel Aguilera @maguilera.net · 20/02/2026
New paper out in PRL! With @artemyte.bsky.social and Sosuke Ito, we combine stochastic thermodynamics with nonequilibrium MaxEnt in large networks to infer entropy dissipation in high-dimensional systems from time series (up to 1000 variables!) journals.aps.org/prl/abstract...
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Reposted by Ramón Nartallo-Kaluarachchi
Alain Goriely @alaingoriely.bsky.social · 19/02/2026
By capturing the balance between aggregate formation and cellular clearance, our model explains decades of stability before sudden runaway dynamics, and offers a framework to predict disease onset and therapeutic efficacy. Mostly driven by Matthew Cotton and Georg Meisl doi.org/10.1063/5.03...
doi.org
A universal phase-plane model for in vivo protein aggregation
Neurodegenerative diseases are driven by the accumulation of protein aggregates in the brain of affected individuals. The aggregation behavior in vitro is well
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 17/02/2026
🚨PREPRINT In our new paper, we link RNNs and neural manifolds by introducing the DDM framework. We can train networks to embed an arbitary dynamical system in a latent subspace. We illustrate this with simple models of input-driven and autonomous associative memory. Enjoy! arxiv.org/abs/2602.14885
arxiv.org
Drift-Diffusion Matching: Embedding dynamics in latent manifolds of asymmetric neural networks
Recurrent neural networks (RNNs) provide a theoretical framework for understanding computation in biological neural circuits, yet classical results, such as Hopfield's model of associative memory, rel...
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Reposted by Ramón Nartallo-Kaluarachchi
Hadrien Oliveri @hadrienoliveri.bsky.social · 22/01/2026
Job alert🚨I am advertising a 2-year postdoctoral position to work on the mathematics of plant morphogenesis @mpipz.bsky.social. Candidates with interests in mathematical modelling, mechanics, or biophysics are strongly encouraged to apply. 🌱Reposts are appreciated! jobs.mpipz.mpg.de/jobposting/4...
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Reposted by Ramón Nartallo-Kaluarachchi
Christoffer G. Alexandersen @cgalexandersen.bsky.social · 18/01/2026
❗🧠 New review in IEEE RBME How network math models are reshaping how we think about neurodegenerative disease, from brain dynamics to disease progression "Network models of neurodegeneration: bridging neuronal dynamics and disease progression" ieeexplore.ieee.org/document/113...
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Oxford Mathematics @oxfordmathematics.bsky.social · 08/12/2025
O little town of Oxford, How still we see thee lie. But above thy deep and dreamless sleep, Complex thoughts go by. Still not convinced? Don't worry, you have all Christmas to 'mull' it over. Closes 12 January. Full details of the role: www.maths.ox.ac.uk/node/74844
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 03/12/2025
This week, the work we did as part of my research internship at IBM is being presented at the MLxOR workshop at NeurIPS. We look at uncertainty quantification for GFlowNets using PCEs. See the poster below:
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Reposted by Ramón Nartallo-Kaluarachchi
Royal Society Publishing @royalsocietypublishing.org · 27/11/2025
This new #JRSocInterface Perspective, using #neuroscience as an example, argues for a new paradigm of holistic #mathematical modelling that attempts to incorporate the necessary complexity into models of biological systems: royalsocietypublishing.org/doi/10.1098/... @rnartallo.bsky.social
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 26/11/2025
🚨Our perspective article of the future of mathematical modelling for complex biological systems has been published in Interface. royalsocietypublishing.org/doi/10.1098/... I hope you enjoy it :)
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 10/11/2025
🚨PREPRINT Coarse-graining diffusions with discrete-state approximations is an easy and effective way to build stochastic models from observed trajectories, but how valid is this approximation? arxiv.org/pdf/2511.05366 We focus on this problem, with an emphasis on the nonequilibrium steady-state.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 27/10/2025
My work on uncertainty quantification for GFlowNets, that I did during my research internship at IBM is now out on the arXiv! arxiv.org/pdf/2510.215...
arxiv.org
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 24/10/2025
Our review paper on nonequilibrium physics in the brain is now out in Physics Reports! doi.org/10.1016/j.ph...
doi.org
Redirecting
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Reposted by Ramón Nartallo-Kaluarachchi
Alain Goriely @alaingoriely.bsky.social · 24/10/2025
How does the 🧠 process information? In this review we show how to use the tools of non-equilibrium thermodynamics to understand brain dynamics in discrete and continuous state spaces Great work led by Ramon as part of his PhD kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F...
kwnsfk27.r.eu-west-1.awstrack.me
ScienceDirect.com | Science, health and medical journals, full text articles and books.
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Reposted by Ramón Nartallo-Kaluarachchi
Leonardo Bonetti @leonardobonetti.bsky.social · 16/10/2025
www.fifatrainingcentre.com/en/environme...
fifatrainingcentre.com
Bonetti - Decoding the elite footballer’s psychological profile
Associate Professor Leonardo Bonetti discusses the psychological attributes that set footballers apart – and how AI might be able to sport them in youngsters.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 15/10/2025
Last week I gave the ECM Seminar at the @ima-maths.bsky.social on 'Time's Arrow - Life and Mind out of Equilibrium'. You can now rewatch the seminar online: www.youtube.com/watch?v=hXBo...
youtube.com
ECM Seminar: Time’s arrow – Life and mind out of equilibrium
YouTube video by IMAmaths
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Reposted by Ramón Nartallo-Kaluarachchi
Hadrien Oliveri @hadrienoliveri.bsky.social · 09/09/2025
⭐New preprint: "A multiscale theory for network advection-reaction-diffusion" with @alaingoriely.bsky.social and Emilia Cozzolino arxiv.org/abs/2509.06546
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 29/08/2025
This month's @londmathsoc.bsky.social newsletter contains a feature by one of the world's greates living scientists (me) and also work by Roger Penrose. I hope you enjoy :) www.lms.ac.uk/sites/defaul...
lms.ac.uk
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 12/08/2025
Excited to say that I will giving the IMA Early Career Mathematicians seminar on October 9th. ima.org.uk/27052/ecm-se... It will be happening online so feel free to join! I will talking about nonequilibrium steady-states in complex systems - what they are and how to find them
ima.org.uk
ECM Seminar: Time’s arrow - Life and mind out of equilibrium
In the latest run of the Early Career Mathematicians Seminar Series we will be joined by the winner of the 2024 Graham Hoare Prize. The Graham Hoare Prize
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Reposted by Ramón Nartallo-Kaluarachchi
Oxford Mathematics @oxfordmathematics.bsky.social · 05/08/2025
Oxford Mathematician @alaingoriely.bsky.social awarded the 2025 LMS/IMA David Crighton Medal for his deep and influential insights into mechanical and biological processes, support of early career mathematicians, and commitment to the public understanding of maths. www.maths.ox.ac.uk/node/72714
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Miguel Aguilera @maguilera.net · 24/07/2025
Our paper just out in Nature Communications! www.nature.com/articles/s41... We introduce curved neural networks naturally introducing high-order interactions showing: • explosive phase transitions • enhanced memory retrieval via self-annealing • increased memory capacity through geometric curvature
nature.com
Explosive neural networks via higher-order interactions in curved statistical manifolds - Nature Communications
Higher-order interactions shape complex neural dynamics but are hard to model. Here, authors use a generalization of the maximum entropy principle to introduce a family of curved neural networks, reve...
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 14/07/2025
This year’s Workshop on Stochastic Thermodynamics (WOST VI) talks are now online! I was very grateful to give a short talk about my work on nonequilibrium brain network dynamics: youtu.be/-z38f0fVMs4?...
youtu.be
Ramón Nartallo-Kaluarachchi: A structural perspective on nonequilibrium brain network dynamics
YouTube video by Workshop on stochastic thermodynamics (WOST)
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Reposted by Ramón Nartallo-Kaluarachchi
Oxford Mathematics @oxfordmathematics.bsky.social · 05/07/2025
Today, the Tour de France begins 3 gruelling weeks of sun, scenery & summits, but what's the key to winning in this elite world of small margins? How about appetite for risk? @imgoxford.bsky.social & @javichico.bsky.social lead the breakaway. Read more: www.maths.ox.ac.uk/node/72427 #TDF2025
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 25/06/2025
Tremendously proud of my dear friend Romain Guyon who has just published this amazing paper on the cover of Science Translational Medicine! He has invented revolutionary new technology for the delivery of booster vaccine doses in a single shot. www.science.org/doi/10.1126/...
science.org
Core-shell microcapsules compatible with routine injection enable prime/boost immunization against malaria with a single shot
Engineered injectable microcapsules loaded with the R21 malaria vaccine enable delayed release, potentially removing the need for booster injections.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 06/06/2025
Final shift at @netsciconf.bsky.social presenting my poster on nonequilibrium brain network dynamics. Also got to see our fearless leader, Renaud Lambiotte, collect his well-deserved Fellowship. #NetSci2025
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 04/06/2025
Speaking at NetSci2025 about our recent Learning on Graphs paper. We build up a theoretical and applied approach to use Hodge theory on graphs to study stochastic systems! arxiv.org/pdf/2409.07479 #NetSci2025
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Alain Goriely @alaingoriely.bsky.social · 02/06/2025
You won't believe your eyes!
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David Beers @davidbeersmath.bsky.social · 27/05/2025
I posted about this paper this a while ago on another website, but figured I'd post it here now that I have a few followers. (Joint with @haharrington.bsky.social, Jacob Leygonie, @uzulim.bsky.social, and Louis Theran). arxiv.org/abs/2411.08201 1/10
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 18/05/2025
Me and Leonardo recently sat down to talk to Dyrol about our recent project, and more generally about collaboration in the mathematical and applied sciences. We hope you enjoy! You can read the paper here: www.pnas.org/doi/abs/10.1... Or the case study on the Maths site www.maths.ox.ac.uk/node/70955
pnas.org
Multilevel irreversibility reveals higher-order organization of nonequilibrium interactions in human brain dynamics | PNAS
Information processing in the human brain can be modeled as a complex dynamical system operating out of equilibrium with multiple regions interacti...
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 15/05/2025
Last week, I gave the Networks seminar here at Oxford on: 'Nonequilibrium steady-states: from diffusion to digraphs', talking about some of my recent work on discrete approximations of nonequilibrium diffusions. It is available online: www.youtube.com/watch?v=ezep... :)
youtube.com
Ramon Nartallo-Kaluarachchi: Non-equilibrium steady-states, from diffusion to digraphs
YouTube video by Fresh from the ArXiv
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 17/04/2025
🚨REVIEW We have written a review on the emerging topic of nonequilibrium, irreversible dynamics in the brain. Now out on the arXiv: arxiv.org/abs/2504.12188 We introduce the relevant mathematical frameworks, discuss recent interesting results, and look to the future of this research direction!
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Oxford Mathematics @oxfordmathematics.bsky.social · 13/04/2025
May we introduce to you @lambiotte.bsky.social, Professor of Mathematics here in the University (and cathedral city) of Oxford, well-connected across all networks (hint to watch the film) and great family guy. Except when he's talking to them about maths.
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Alain Goriely @alaingoriely.bsky.social · 08/04/2025
How do axons “choose” their path during neurodevelopment? Besides chemical cues, axons can respond to the mechanical stiffness of their environment. This behavior is called durotaxis. In this paper, we develop a full multiscale model of axon durotaxis. doi.org/10.1016/j.jm...
doi.org
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Royal Society Publishing @royalsocietypublishing.org · 04/04/2025
Modelling cerebrovascular pathology and the spread of amyloid beta in Alzheimer’s disease: royalsocietypublishing.org/doi/10.1098/... #ProcA #Alzheimers #biophysics
royalsocietypublishing.org
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Alain Goriely @alaingoriely.bsky.social · 02/04/2025
In this paper, we connect local damage to brain vasculature to global progression of toxic proteins leading to neurodegenerative diseases. royalsocietypublishing.org/doi/epdf/10.... We identify situations where disease initiation can be caused by focal hypoperfusion following vascular injury.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 27/03/2025
🚨PERSPECTIVE We have written a perspective calling for a holistic approach to mathematical modelling for biological systems - it now out on the arXiv: arxiv.org/abs/2503.20511 A thread 🧵
arxiv.org
From reductionism to realism: Holistic mathematical modelling for complex biological systems
At its core, the physics paradigm adopts a reductionist approach to modelling, aiming to understand fundamental phenomena by decomposing them into simpler, elementary processes. While this strategy ha...
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Reposted by Ramón Nartallo-Kaluarachchi
Leonardo Bonetti @leonardobonetti.bsky.social · 10/03/2025
🚨 New paper out in PNAS! 🚨 We introduce a method to pinpoint which neural interactions are far from equilibrium by mapping time-irreversible dynamics onto directed multilayer graphs.
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 07/03/2025
Check out this feature on the @oxfordmathematics.bsky.social website regarding our recent paper: www.maths.ox.ac.uk/node/70955
maths.ox.ac.uk
Time-irreversibility reveals hidden structure in neural dynamics | Mathematical Institute
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 07/03/2025
🚨 NEW PAPER ALERT! After such a long journey, I am so glad to see this published in @PNASNews: pnas.org/doi/10.1073/... Big thanks to @leonardobonetti.bsky.social, Gemma Fernandez-Rubio, Peter Vuust, Gustavo Deco, Morten Kringelbach, Renaud Lambiotte and @alaingoriely.bsky.social A thread...
pnas.org
Multilevel irreversibility reveals higher-order organization of nonequilibrium interactions in human brain dynamics | PNAS
Information processing in the human brain can be modeled as a complex dynamical system operating out of equilibrium with multiple regions interacti...
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Ramón Nartallo-Kaluarachchi @rnartallo.bsky.social · 31/01/2025
Super excited to be returning to Wilson's, to give a Maths Circle lecture about my PhD work. Without the excellent maths department at Wilson's, my career path would be very different. It is an honour to be invited back. Hopefully, it inspires a few more students to pursue mathematical research!
Description of talk. Time's Arrow: Life out of Equilibrium.
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