1 citations · 1 across the 4 of their papers we have counts for
5 papers · 1 filter
Exceptional points of arbitrary high orders induced by non-Markovian dynamics
Timofey T. Sergeev, Evgeny S. Andrianov, Alexander A. Zyablovsky
Exceptional points are singularities in the spectrum of non-Hermitian systems in which several eigenvectors are linearly dependent and their eigenvalues are equal to each other. Us…
Non-Markovian protection of states from decay in quasi-PT-symmetric systems
T. T. Sergeev, E. S. Andrianov, A. A. Zyablovsky
We consider a quasi-PT-symmetric system of two resonators, one of which interacts with a finite-size environment. The interaction with the environment leads to energy losses in the…
Transition from non-ergodic to ergodic dynamics in an autonomous discrete time crystal
T. T. Sergeev, A. A. Zyablovsky, E. S. Andrianov
We consider an autonomous system of two coupled single-mode cavities, one of which interacts with a multimode resonator. We demonstrate that for small coupling strengths between si…
Anomalous dependence of sensitivity on observation time caused by memory retention in the time crystal
T. T. Sergeev, A. A. Zyablovsky, E. S. Andrianov
In this work, we consider a composite atom-cavity system interacting with a ring resonator. In such a structure, time crystal regime can be observed. We show that a quadratic obser…
A new type of non-Hermitian phase transition in open systems far from thermal equilibrium
T. T. Sergeev, A. A. Zyablovsky, E. S. Andrianov +3
We demonstrate a new type of non-Hermitian phase transition in open systems far from thermal equilibrium, which takes place in coupled systems interacting with reservoirs at differ…