Author

A. G. Mikhaylenko

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Preprint Oct 2026

Mass quench in interacting finite-size quantum field system

In this work, we theoretically investigate the non-equilibrium evolution of the correlation functions of a quantum scalar field following a mass quantum quench in a finite-size system. The self-consistent equation for the Keldysh (statistical) correlation function is solved numerically in the one-loop approximation. A...

Grachik A. Simonian, A. G. Mikhaylenko, A. G. Semenov · 0 citations

Open access Sep 2026

Measuring correlations using local and nonlocal quenches

We present a theoretical proposal for measuring correlation functions in a quantum field system based on the use of quantum quenches. Using the examples of massive and massless scalar field theories, we show that a short-term perturbation of the system leads to a dependence of the further evolution of the average field...

A. G. Mikhaylenko, A. G. Semenov · Physical Review D · 0 citations