Upcoming seminar Thursday 6 March (Joint ICTP/SISSA Statistical Physics Seminar)

[Statistical Physics]

JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR


Thursday, 6 March 2014  at 11:30 a.m.


Venue:  Luigi Stasi Seminar Room, ICTP Leonardo Building (1st floor)




Speaker:
Dr. Mohammad A. Rajabpour (IFSC, USP, Brasil)



Title:
"Universal Behavior of Shannon and Renyi Mutual Information of Quantum 
Spin Chains"


Abstract:
---------

In this talk we will first review the Shannon and Renyi entropies as
information theoretic concepts and their use in quantum and classical
systems. They are quantities which usually base dependent.  Then we will
introduce mutual Shannon and mutual Renyi entropies as very useful
quantities to detect the universality classes of the quantum spin chains.
We will present some conjectures regarding the connection of these 
quantities to central charge of the critical systems and then we will 
support them with numerical works done on the Ising model Q=3,4 Potts 
model and XXZ spin chains.
In all of these cases we will emphasize on the bases that one
chooses to calculate these quantities and in particular we will show 
that some of the bases are actually more suitable to detect the 
universality classes.

References:
1: FC Alcaraz, MA Rajabpour, Phys. Rev. Lett. 111, 017201 (2013)
2: FC Alcaraz, MA Rajabpour, in preparation.