[Todos] INVITACIÓN COLOQUIO DEL DEPARTAMENTO DE FÍSICA 2025 - JUEVES 20/02, 16:00 HS

[info en exactas.unlp.edu.ar]

Estimados miembros de la Facultad:

Desde el Departamento de Física les invitamos a participar del Ciclo de 
Coloquios del Departamento.

Para este primer Coloquio contaremos con la presencia de Chris Hooley 
(Coventry University), quien presentará "The physics of strong 
correlations: an enduring puzzle". Nos encontraremos para ello a las 16 
hs del Jueves 20 de Febrero frente al Aula Chica (por favor, ser 
puntuales).

La charla será esta vez (necesariamente) en idioma inglés, pero habrá 
facilidades para preguntas en español (serán traducidas).

Incluimos debajo el resumen de la charla, y una breve biografía del 
expositor.

Coloquio: "The physics of strong correlations: an enduring puzzle"
Chris Hooley, Coventry University

In the famous words of Sir Arthur Eddington, "We used to think that if 
we knew one, we knew two, because one and one are two.  We are finding 
that we must learn a great deal more about 'and'."  This pithy quotation 
captures the essence of the problem of complexity in physics.  In many 
cases, even when we know the microscopic ingredients of a system, 
predictions of the behaviour of the entire system do not seem to follow 
easily from this knowledge.

In this talk, I shall try to explain why not.  I shall draw on various 
examples from physics where strong correlations produce surprising 
effects, including traffic flow and traffic jams, the interiors of 
neutron stars, and electrical transport in nearly magnetic metals.  I 
shall discuss Phil Anderson's famous 1972 article "More Is Different" – 
which does not say what many people say it says – and whether the advent 
of increasingly high-performance computing should change our view on 
some of these questions of emergence and explanation.

Breve biografía del expositor:
Chris Hooley is a Professor in Theoretical Physics and head of the 
Statistical Physics research group in the Centre for Fluid and Complex 
Systems at Coventry University, UK.  For his DPhil he worked on 
frustrated magnetism with Alexei Tsvelik in Oxford. Then he held 
postdoctoral positions at Rutgers and Birmingham before taking up his 
first faculty position at the University of St Andrews in 2005.  After 
eighteen years there, he moved to the Max Planck Institute for the 
Physics of Complex Systems in Dresden, Germany in autumn 2023, and then 
to his current position in Coventry in autumn 2024.  His research is 
concerned with many-body quantum mechanics both in and out of 
equilibrium; particular topics of interest include quantum critical 
metals, strongly entangled magnetic insulators, topological semimetals, 
and dissipative quantum circuits.


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