Full Professor of Applied Physics, Department of Physics, Polytechnic University of Catalonia, UPC @la_UPC
Barcelona, SPAIN
Joined March 2015
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Romualdo Pastor-Satorras retweeted
New paper! When AI agents interact, the group can settle on outcomes none of its members would choose alone. And group size can determine which outcome wins. So a model that passes every test on its own can still go wrong at scale.
pnas.org/doi/10.1073/pnas.25…
Over 30 years of Statistical and Nonlinear Physics in Physical Review E
journals.aps.org/over-30-yea…
Romualdo Pastor-Satorras retweeted
Reserveu data! 4 de desembre @UPC_Arts presentem #TresorsUPC a la @BibliotecaCN 🍿
tresors.upc.edu/
Aquí per a fer prèvia, algunes entrevistes:
tresors.upc.edu/entrevistes/
Us hi esperem! 😄
Romualdo Pastor-Satorras retweeted
New preprint: More is different for AI multi-agent systems - but what does more mean?
arxiv.org/abs/2510.22422
Romualdo Pastor-Satorras retweeted
Group size effects and collective misalignment in LLM multi-agent systems arxiv.org/abs/2510.22422
Romualdo Pastor-Satorras retweeted
[NEW PAPER ALERT] If you want to know more about co-evolving simple and complex contagion on temporal networks, check this out! Results from a fantastic collaboration with @AndresElsa3, @m_starnini and @Romu_PS journals.aps.org/prresearch/…
Romualdo Pastor-Satorras retweeted
One year in the making, eight authors, a truly collaborative effort. It's been a lot of work, but we hope the community will like it.
Comments welcome, RT appreciated!
"Opinion dynamics: Statistical physics and beyond"
arxiv.org/abs/2507.11521
Review of lab experiments, data, models, analytical/computational tools. 93 pages, >1k references.
With @ftw_baumann, @dgarcia_eu, @iniguezg, @MartonKarsai, @jalorenz, K. Sznajd-Weron. Led by @m_starnini
Romualdo Pastor-Satorras retweeted
Ja teniu a #ZonaVideoUPC el vídeo de la jornada en línia del passat maig sobre Intel·ligència Artificial i Comunicació Clara que vaig fer a la Escola d'Administració Pública de Catalunya @eapccat @ICEUPC
zonavideo.upc.edu/multimedia…
Un plaer espero ajudin els materials a tothom! 😅
Hello @ScienceAdvances! I’ve been waiting for six months the referee reports for my paper. Should I wait much longer??
Romualdo Pastor-Satorras retweeted
So looking forward to @LanetConference !
We are more than happy to announce that @a_baronca (@LondonU), an absolute authority on the study of decentralized networks of humans and machines, will be present as a speaker at @LanetConference!
#ComplexSystems #LANET2025
Uruguay lanet2025.uy/
Romualdo Pastor-Satorras retweeted
Last paper out on @NatureHumBehav:
Has political polarization increased in the last decades because individuals changed their minds about fundamental issues, or have they simply sorted themselves into parties matching their ideology more closely?
nature.com/articles/s41562-0…
¿Por qué los estorninos vuelan en grupo con esas formas tan hipnóticas? publico.es/yo-animal/por-que…
Romualdo Pastor-Satorras retweeted
"Chemical communication in life and AI"
Artistic proposal with @ivangtorre in "Beauty in Complexity Workshop" in FRCCS 2024, this week in Montpellier: 👁️👇
zenodo.org/records/11267401
AI generated images training #DALLE with our paper in Biology Letters 👇😁
royalsocietypublishing.org/d…
New paper on Communications Physics: Non-linear inhibitory responses enhance
performance in collective decision-making
nature.com/articles/s42005-0…
Romualdo Pastor-Satorras retweeted
Last paper out on @PhysRevResearch with Jaume Ojer & @Romu_PS!
How do 1) the interplay between different topics discussed at the same time and 2) the topology of the underlying network affect the transition from opinion polarization to consensus?
journals.aps.org/prresearch/…
Romualdo Pastor-Satorras retweeted
🚨 We are thrilled to announce our first lecturer at #Complexity72h
Introducing Romualdo Pastor-Satorras (@Romu_PS), an expert in non-equilibrium statistical physics, condensed matter theory and complex systems analysis, from @la_UPC.
Join us in Madrid: complexity72h.com
New paper on Physical Review E: Leveraging spurious Omori-Utsu relation in the nearest-neighbor declustering method
journals.aps.org/pre/abstrac…
Romualdo Pastor-Satorras retweeted
🔉 COMUNICADO ESPECIAL AMETSE ⚠️
Ante la noticia que hemos conocido hoy relativa a la apertura de un proceso penal contra la presidenta de AEMET por lo sucedido en Valencia el pasado 29-O, desde la asociación meteorológica del Sureste-AMETSE queremos manifestar lo siguiente:
Romualdo Pastor-Satorras retweeted
Now that we see applications of AI in many different disciplines is the perfect day to remember where are the basics. Emergence is the word, searching in a self-organized way for optimal configurations. Statistical physics. #NobelPrize
Romualdo Pastor-Satorras retweeted
At least two seminars tomorrow in BCN,
@omeuxeito and @joefresna
Different times, different places, different complexity, no overlap!
A very complex day!
@BCNCollab @Romu_PS @FisicaUB teapaw.org/Romu_PS/status/1840667…
Collective behavior seminar at @FisicaUB !
“The power of inhibition for collective decision making in minimalistic robot swarms” by Andreagiovanni Reina @joefresna
Aula E. Fontserè, Facultat de Física, Universitat de Barcelona
Thursday 3rd October, 14h