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13 February 2018

Distinguishing humans from computers in the game of go

Several decades ago, the mathematician Alan Turing already asked himself the question of recognizing a human from an advanced artificial intelligence (Turing test). Recently, after years of effort, the AlphaGo computer program has been able to beat the best go players. Three CNRS theoreticians from the LPT Toulouse and LPTMS Orsay applied the theory of networks to databases of go games played by humans and by different computer programs. They showed that the structure of networks from the human and computer players was different, paving the way for a Turing test for go simulators. These results are published in Europhysics Letters. See also the report in Phys.org

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8 January 2018

Nearly Deconfined Spinon Excitations in the Square-Lattice Spin-1/2 Heisenberg Antiferromagnet

Similar to how sound waves propagate through everyday materials, some materials can carry magnetic waves, which are collective excitations of electronic magnetic moments (or spins). These “spin waves” can be detected in neutron-scattering experiments. Theoretically, it is believed that the spin waves can sometimes split up (or fractionalize) into a different kind of excitation, called a spinon, which carries only half of the magnetic moment associated with a normal spin wave. (...)

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23 November 2017

How fish switch attention from neighbor to neighbor for seamless collective movement

Researchers from the CRCA and the LPT in Toulouse, and their collaborators in China and the UK have characterized how fish influence each other when they make sudden changes of direction. Press release of PLOS Computational Biology which also dedicated its front page to this work; CNRS Institute of Biology news (in French)

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8 November 2017

Workshop ``New Aspects of Localization’’

Toulouse, November 27-28 2017

IRSAMC, seminar room

The goal of this two day workshop is to bring together young and senior researchers experts in Anderson localization, multifractality and quantum disordered systems. Multidisciplinary by nature, these subjects have seen important advances in recent years which we wish to see addressed here in order to stimulate the exchange of ideas at the intersection of several fields of theoretical physics.

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7 March 2016

Collective behavior in the big data era: can we enhance collective intelligence in human groups ?

This workshop promotes an interdisciplinary approach to studying collective behavior in human groups, fostering cross-disciplinary interactions between various communities: quantitative ethology, social sciences, economics, information technologies and statistical physics.

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17 November 2015

International workshop Theory Days 2015

Following the tradition of the previous successful six meetings in Toulouse, the Theory Days workshop aims at stimulating constructive discussions, collaborations, and knowledge exchange among a selected group of theoreticians.

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