Theoretical physicist and science communicator.
Coordinator of the Dutch Institute for Emergent Phenomena. Founder of Science & Cocktails.
About
I explore how the world works across scales—from black holes and quantum matter to living systems and collective behaviour. I am an associate professor in theoretical physics at the University of Amsterdam, an affiliate associate professor at the Niels Bohr Institute in Copenhagen, and a member of Amsterdam’s Institute for Advanced Study.
My research connects ideas from gravity, quantum physics and hydrodynamics to understand how complex behaviour emerges from simple ingredients. I coordinate the Dutch Institute for Emergent Phenomena and lead Emergence at All Scales, bringing researchers across disciplines together to investigate these connections.
I also build bridges between science, society, art and culture. Through Science & Cocktails, which I founded in 2010, and collaborations in music, film, writing and performance, I create spaces where researchers, artists and the public can meet, exchange ideas and explore new ways of seeing the world.
Read more about me.
Conversations on Quantum Gravity
My latest book, published in Cambridge University Press in 2021, about the quest for a theory of quantum gravity.
The book consists of 37 interviews to theoretical physicists about their views on quantum gravity and other problems in high-energy physics.
The book features interviews to 4 Nobel Prize winners and 1 Fields medalist and covers approaches such as string theory, asymptotic safety, loop quantum gravity and causal dynamical triangulations.
According to Ted Jacobson, Distinguished University Professor at the University of Maryland, “Conversations on Quantum Gravity is a unique resource for students and researchers of quantum gravity, for philosophers and sociologists of science, and for future historians of physics. Jácome Armas has admirably accomplished a herculean task: 37 interviews, peppered with his provocative questions informed by a broad appreciation of the scope of the physics problems and the panoply of approaches to solving them, and copiously referenced to the relevant literature.”
Recent news
Recent papers, public conversations and collaborations across science, art and society.

Outreach
In development · June 2027
Emergence Festival
I am developing a science and culture festival at Tolhuistuin in Amsterdam, bringing emergence to life through talks, film, exhibitions, music and performance.
Explore the festival →
Outreach
September 2026
Emergence, Cosmic Origins and Collective Patterns
I co-organised, moderated and narrated this Science & Cocktails evening at Paradiso, connecting cosmic origins and collective behaviour with live audiovisual performance.
Explore the event →
Preprint
Updated September 2026
How cities grow across scales
Our study links urban geometry with population fluctuations, using maps of Dutch urban regions and hundreds of cities worldwide to constrain models of urban growth.
Read the preprint →
Published paper
August 2026 · JHEP
Null fluid/gravity correspondence
We connect the dynamics of null fluids with gravitational wave geometries, extending the fluid/gravity correspondence to a regime of zero temperature and lightlike motion.
Read the paper →
Outreach
August 2026
Black Hole Mysteries
I organised, moderated and narrated a public panel at DR Koncerthuset for around 1000 guests. Watch the discussion of black holes, observations and unresolved puzzles.
Watch the discussion →
In the media
July 2026 · Tribuna das Ilhas
A research centre for emergence
An interview about Emergence at All Scales and bringing different scientific disciplines together to explore how collective phenomena arise.
Read the interview →
Published paper
July 2026 · Physical Review D
Chiral anomaly from spin hydrodynamics
We use holography to connect spinning fluids with chiral anomalies, revealing a geometric perspective on the relationship between spin and fluid dynamics.
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Preprint
June 2026
Simulating relativistic plasmas
A finite-volume method for relativistic magnetohydrodynamics incorporates viscosity and electrical resistance while preserving causal behaviour.
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Published paper
2026 · Physical Review Research
Temperature of an active nematic
Our work identifies how spontaneous flows can generate distinctive temperature patterns in active matter, offering a thermal signature of activity.
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Art + science
2026 · Projects in development
Emergence Art+Science Fellowships
I initiated fellowships connecting artists and researchers to develop work inspired by emergence, with the resulting projects destined for the 2027 festival.
Explore the fellowships →
Preprint
January 2026 · Revised March 2026
Thermodynamics of ideal spin fluids
We clarify how different definitions of local conserved currents affect spin-fluid thermodynamics and identify relations that remain valid across these choices.
Read the preprint →
In the media
January 2026 · Quantum Universe
A conversation on quantum gravity
In the second part of this interview, I discuss open questions in quantum gravity, the conversations behind my book and science in public life.
Read the interview →Explore more: Publications · Outreach · In the media