Friday, February 07, 2020

12:00 PM -
1:00 PM

East Bridge 114

# IQIM Postdoctoral and Graduate Student Seminar

Conformal field theories are magical

Christopher White

*,*Postdoctoral Associate*,*University of Maryland Condensed Matter Theory Center*,***Abstract:** "Magic" measures the degree to which a state cannot be approximated the result of Clifford gates; consequently, it can measure both the difficulty of state preparation on a quantum computer, and the degree to which entanglement is non-Bell-pair.

I will give a moderately pedagogical introduction to magic. I will then show numerical calculations of the mana of ground states of the one-dimensional Z3 Potts model, chosen for convenience, in which we find that the mana is extensive and peaked at the phase transition. I will then comment on the implications of this fact both for quantum simulation of field theories and for AdS-CFT-motivated Ansätze for CFT ground states.

For more information, please contact Marcia Brown by phone at 626-395-4013 or by email at marciab@caltech.edu.