Energy Cost of Dynamical Stabilization: Stored versus Dissipated Energy
Saar Rahav
Round 1
Reviewer 1 Report
In this work the authors study dynamical stabilization due to high frequency motion. Instead of looking external driving, they consider two coupled subsystems, where one oscillates fast, and can stabilize its counterpart. This allows to study the role of backaction, and what happens when there is no supply of external energy.
The authors find a regime where dynamical stabilization is achieved, mainly when the backaction is small. In this regime the stabilized system is stationary and there is no dissipation. When the backaction is larger, or when noise is added, a metastable state is seen.
The system studied offers a new facet to the topic of dynamical stabilization. Furthermore, the manuscript contains highly interesting results, which are presented in a clear and logical way. I enjoyed reading it and warmly recommend publication in Entropy in its current form.
Reviewer 2 Report
This is refreshing look at a classical problem: the cost of control
of an unstable object. This type of control is widespread in many fields of engineering and physics. The Kapitza pendulum has been one of the classical examples. The authors explore the dissipative cost of stabilizing the system.
The paper is well written and the arguments are clear.
