Entropic uncertainty and the quantum phase transition in the Dicke model
E. Romera, Manuel Calixto, Ábris Nagy · Europhysics Letters (EPL) · 2012
We show that the description of the quantum phase transition in terms of the entropic uncertainty relation turns out to be more suitable than in terms of the standard variance-based uncertainty relation. The entropic uncertainty relation detects the quantum phase transition in the Dicke model and it provides a correct description of the quantum fluctuations or quantum uncertainty of the system.