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Quantum simulations of high energy physics models
Many-body quantum systems are very hard to describe and simulate in
general, since the dimension of the state space grows exponentially with
the number of particles, volume, etc. Cold atomic systems may help us
in that task, as one can in principle engineer the interactions among the
atoms to emulate many-body quantum problems. So far, this possibility
has been mainly addressed in the context of condensed matter systems,
and a significant experimental effort is nowadays trying to pursue this goal.
In this talk I will present some recent work where we have analyzed how to
use cold atomic systems to simulate simple high-energy models. In particular,
I will explain how lattice (compact) QED and QCD in different dimension may
be simulated. Time permiting, I will also mention other efforts to describe and
simulate (classically) some of those problems using tensor-network techniques,
as developed in the context of quantum information theory.
