Quantum Lunch Location:
T-Division Conference Room, TA-3,
Building 123, Room 121
Quantum Institute: Visitor Schedule
The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.
For more information, contact Diego Dalvit.
June 7, 2007
LANL - T-13
Locality, Correlations, and Entanglement in Quantum Ground States
This talk will be a blackboard talk reviewing recent work on possible correlations and entanglement in quantum systems with local interactions and a spectral gap. The local interactions lead to a Lieb-Robinson bound, a powerful bound on the spread of information across the system over time. After discussing the bound, I will show how the bound leads to exponential decay of correlations in these systems. I will then apply these results to describe the change in the ground state under external perturbations, and discuss applications to matrix product states and simulation of quantum systems.