DC pole | Wartość | Język |
dc.contributor.author | Łuczka, Jerzy | - |
dc.contributor.author | Spiechowicz, Jakub | - |
dc.date.accessioned | 2021-02-18T14:23:39Z | - |
dc.date.available | 2021-02-18T14:23:39Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | "Scientific Reports" (2021), Vol. 11, art. no. 4088 | pl_PL |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/19142 | - |
dc.description.abstract | Experimentalists have come to temperatures very close to absolute zero at which physics that was once ordinary becomes extraordinary. In such a regime quantum effects and fluctuations start to play a dominant role. In this context we study the simplest open quantum system, namely, a free quantum Brownian particle coupled to thermal vacuum, i.e. thermostat in the limiting case of absolute zero temperature. We analyze the average energy E=E(c) of the particle from a weak to strong interaction strength c between the particle and thermal vacuum. The impact of various dissipation mechanisms is considered. In the weak coupling regime the energy tends to zero as E(c)∼cln(1/c) while in the strong coupling regime it diverges to infinity as E(c)∼c√. We demonstrate it for selected examples of the dissipation mechanisms defined by the memory kernel γ(t) of the Generalized Langevin Equation. We reveal how at a fixed value of c the energy E(c) depends on the dissipation model: one has to compare values of the derivative γ′(t) of the dissipation function γ(t) at time t=0 or at the memory time t=τc which characterizes the degree of non-Markovianity of the Brownian particle dynamics. The impact of low temperature is also presented. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | physics | pl_PL |
dc.subject | quantum physics | pl_PL |
dc.subject | statistical physics | pl_PL |
dc.title | Energy of a free Brownian particle coupled to thermal vacuum | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1038/s41598-021-83617-y | - |
Pojawia się w kolekcji: | Artykuły (WNŚiT)
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