Hi All,
Professor Adrian Feiguin from Northeastern will be visiting the group
tomorrow as part of the Greater Boston Area theochem series. He's an expert
in quantum information as he was the theoretician in Awschalom's group, and
helped to develop DMRG with Stephen White. I'm sure we can find quite a bit
of overlap between him and the group.
I contacted other groups last week, but no one has gotten back to me about
meeting with him, so let's see if we can fill his schedule! I've also got
lunch spots, so please let me know if you're interested.
His abstract is below
Thomas
Abstract: "The study of models of strongly correlated electrons is a
difficult
problem since methods based on perturbation theory generally fail. The
lack of controlled and well-behaved approximations has led physicist and
chemists to
study these systems using numerical techniques. In 1992,
Steven White invented the Density Matrix Renormalization Group method.
With roots that can be traced to Wilson's Renormalization Group, this
technique has proven to be remarkably effective computational tool to
calculate static, ground state properties of low-dimensional
strongly correlated systems.
During the past ten years, the DMRG has experienced an unprecedented
evolution.
Through a convergence with quantum information ideas, we now have a much
better understanding of its range of applicability, and the consequences
of quantum entanglement on the effectiveness of the method.
In a subsequent development we adapted it to solve the time-dependent
Schroedinger's Equation.
I will present both algorithms, discuss different applications, and
show results for spin and electronic transport in nano-structures,
decoherence in open quantum systems, and spectral properties of low
dimensional electronic systems.
I will finally show how the method can be extended to imaginary time to
study thermodynamics
and finite-temperature properties."
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