[quantum-info] Today's PIQuDos: Robert Huebener

[Markus Mueller]

Hi all,

this is a reminder of Robert Huebener's talk today at 4 pm in the Time Room.


Title: *Wick's theorem for Matrix Product states*
Speaker: *Robert Hübener* (Freie Universität Berlin)

Abstract:
Matrix product states and their continuous analogues are variational 
classes of states that capture quantum many-body systems or quantum 
fields with low entanglement; they are at the basis of the 
density-matrix renormalization group method and continuous variants 
thereof. In this talk we show that, generically, N-point functions of 
arbitrary operators in discrete and continuous translation invariant 
matrix product states are completely characterized by the corresponding 
two- and three-point functions. Aside from having important consequences 
for the structure of correlations in quantum states with low 
entanglement, this result provides a new way of reconstructing unknown 
states from correlation measurements e.g. for one-dimensional continuous 
systems of cold atoms. We argue that such a relation of correlation 
functions may help in devising perturbative approaches to interacting 
theories.

Joint work with Andrea Mari and Jens Eisert.
arXiv:1207.6537

Date: Monday, March 25, 2013 - 4:00 pm
Location: Time Room (294)


Best,
Markus

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