Zobrazeno 1 - 10
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pro vyhledávání: '"Polyakov, Evgeny"'
Autor:
Polyakov, Evgeny, Arefyeva, Nataliya
Publikováno v:
Phys. Rev. A 109, 062204 (2024)
Quantum chaos, a phenomenon that began to be studied in the last century, still does not have a rigorous understanding. By virtue of the correspondence principle, the properties of the system that lead to chaotic dynamics at the classical level must
Externí odkaz:
http://arxiv.org/abs/2307.10269
Autor:
Polyakov, Evgeny A.
We are at the midst of second quantum revolution where the mesoscopic quantum devies are actively employed for technological purposes. Despite this fact, the description of their real-time dynamics beyond the Fermi's golden rule remains a formiddable
Externí odkaz:
http://arxiv.org/abs/2206.02952
Autor:
Polyakov, Evgeny A.
In this work we provide a complete description of the lifecycle of entanglement during the real-time motion of open quantum systems. The quantum environment can have arbitrary (e.g. structured) spectral density. The entanglement can be seen construct
Externí odkaz:
http://arxiv.org/abs/2012.04065
We present a stochastic approach for the description of the quantum dynamics of open system in a fermionic environment (bath). The full quantum evolution as provided by the Schrodinger equation is reformulated exactly as a probabilistic average over
Externí odkaz:
http://arxiv.org/abs/1909.05760
Publikováno v:
New J. Phys. 21, 063004 (2019)
In the non-Markovian regime, the bath has the memory about the past behavior of the open quantum system. This memory has slowly-decaying power-law tails. Such a long-range character of the memory complicates the description of the resulting real-time
Externí odkaz:
http://arxiv.org/abs/1812.04266
Publikováno v:
New J. Phys. 21, 063004 (2019)
A new approach to the theory and simulation of the non-Markovian dynamics of open quantum systems is presented. It is based on identification of a parameter which is uniformly small on wide time intervals: the occupation of the virtual cloud of quant
Externí odkaz:
http://arxiv.org/abs/1812.03918
In the dynamics of driven impurity models, there is a fundamental asymmetry between the processes of emission and absorption of environment excitations: most of the emitted excitations are rapidly and irreversibly scattered away, and only a small amo
Externí odkaz:
http://arxiv.org/abs/1712.04279
When conducting the numerical simulation of quantum transport, the main obstacle is a rapid growth of the dimension of entangled Hilbert subspace. The Quantum Monte Carlo simulation techniques, while being capable of treating the problems of high dim
Externí odkaz:
http://arxiv.org/abs/1711.08957
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The derivation of path integrals is reconsidered. It is shown that the expression for the discretized action is not unique, and the path integration domain can be deformed so that at least Gaussian path integrals become probabillistic. This leads to
Externí odkaz:
http://arxiv.org/abs/1610.08964