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Physics Colloquium, David A. Huse, "Many-body Anderson localization and quantum thermalization"

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Physics Colloquium, David A. Huse, "Many-body Anderson localization and quantum thermalization"
When Feb 17, 2016
from 04:00 PM to 05:00 PM
Where MR418N
Contact Name
Contact Phone 212-650-5618
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Colloquium February 17, 2016 at 4 PM in MR 418N

SPEAKER: Prof. David A. Huse, Princeton University

TITLE: Many-body Anderson localization and quantum thermalization

ABSTRACT:
In Anderson's 1958 localization paper, he started with the many-body problem of interacting spins doped in to a semiconductor, conjecturing many-body localization at high temperature. Then he simplified to noninteracting particles, where he could much more cleanly demonstrate localization, and this simplified problem is what later became known as "Anderson localization". Many-body localization at high temperature was then mostly neglected for the remainder of the 20th century. But now, developments in many-body atomic physics and in quantum information have inspired much recent work on many-body localization, most of which is theoretical, although experimental activity is now picking up speed. Many-body localization is a breakdown of equilibrium statistical mechanics because the many-body localized system does not go to thermal equilibrium under its own quantum dynamics: it fails to be able to serve as a thermal reservoir for itself. This breakdown occurs at a new type of quantum phase transition that is very different from previously known phase