News & past events

The physics of fun

M. Boguñá publications 05/11/2019

Engaging in playful activities, such as playing a musical instrument, learning a language, or per- forming sports, is a fundamental aspect of human life. We present a quantitative empirical analysis of the engagement dynamics into playful activities. We do so by analyzing the behavior of millions of players of casual video games and discover a scaling law governing the engagement dynamics. This power-law behavior is indicative of a multiplicative (i.e., happy- get-happier) mechanism of engagement characterized by a set of critical exponents. Read more

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Postdoctoral position available (closed)

M. B. applications 19/06/2018

Postdoctoral Position, Mapping Big Data Systems

Applications are invited for a Postdoctoral fellowship at the University of Barcelona to work with Prof. M. Ángeles Serrano and Prof. Marián Boguñá at the Department of Condensed Matter Physics and UB Institute of Complex Systems (UBICS). The position is funded by a "Fundación BBVA" grant.

This is a postdoctoral position with a salary of €29,700 per year (before taxes) for one year renewable until june 2020. There will be additional support for conference travels.

The topic:

The discovery and understanding of the hidden geometry of complex networks have become fundamental problems within Network Science giving place to the field of Network Geometry. The research will focus on mixing of machine learning and statistical techniques for an efficient embedding of very large networks in hidden metric spaces to produce meaningful maps. We will create an online platform to host an atlas of network maps, and where scientists and interested people can produce theirs.

Essential Skills:

- A PhD in Physics, Computer Science, Computer/Electronic Engineering, or other relevant discipline is expected.
- Expertise in complex networks
- Excellent software development skills
- Excellent communication skills, verbal and written (English)

Informal queries about this position should be sent to

Application process:

Interested applicants are requested to submit

- a Curriculum Vitae including relevant publications and the name and contact details of 2 referees

- a one page cover letter explaining your interest in this specific position

Submissions should be sent by email with subject “MBDS Application” to

Interviews will be carried out as soon as suitable candidates are identified.

To successful candidate is expected to start in September  2018, or before (if possible).

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New paper in Nature Physics. Renormalization Group for Complex Networks

M. Boguñá publications 21/03/2018

We use the geometry underlying real complex networks to define a renormalization group. Check the paper here

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macfang workshops 06/11/2017

Mapping Complexity. Foundations and Applications of Network Geometry
Barcelona | November 6 – 8, 2017

Full details can be found at our website We kindly ask for your cooperation in spreading the word by forwarding this e-mail and retweeting our posts @macfang17. Hope to meet you next November in Barcelona!

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World Trade Atlas 1870-2013

M. Boguñá applications 01/03/2017

We present the World Trade Atlas 1870-2013, a collection of annual world trade maps in which distances incorporate the different dimensions that affect international trade, beyond mere geography. The atlas provides us with information regarding the long-term evolution of the international trade system and demonstrates that, in terms of trade, the world is not flat, but hyperbolic. You can check the evolution of world trade in this interactive video tool

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New paper in Nature Communications

Nature Physics Research Highlights, A. Klopper publications 01/03/2017

The old maxim that it's less about what you know than who you know is an appropriate analogy for how the behaviour of a complex network can be profoundly influenced by the weights of its links. Read more

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New paper in Nature Physics

M Boguñá publications 01/02/2017

We show that multiplex systems are not random combinations of single network layers. Instead, they are organized in specific ways dictated by hidden geometric correlations between the layers.

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