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arXiv 2108.02172math-phmath.MP
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双模费米子模型的广义哈密顿量和渐近平衡

Generalized Hamiltonian for a two-mode fermionic model and asymptotic equilibria

Rosa Di Salvo, Matteo Gorgone, Francesco Oliveri

摘要:

在最近的一些论文中,引入了系统$\mathcal{S}$的所谓$(H,ρ)$诱导动力学,它的时间演化是采用算子方法推导的。根据量子力学的形式数学装置,$H$表示$\mathcal{S}$的哈密顿量,而$ρ$是周期性地应用于$\mathcal{S}$的某个规则。在这种方法中,规则通过根据系统的状态变化修改进入$H$的一些参数,在特定时间$kτ$起作用,其中$k$整数和$τ$固定。其结果是,一个动态承认一个渐近平衡状态可以得到。在这里,我们考虑$τ\rightarrow 0$的极限,因此我们引入了一个广义模型,导致渐近平衡。此外,在双模费米子模型的情况下,我们能够推导出一个关系,涉及到的哈密顿量的渐近平衡态的参数。

英文摘要:

In some recent papers, the so called $(H,ρ)$-induced dynamics of a system $\mathcal{S}$ whose time evolution is deduced adopting an operatorial approach, has been introduced. According to the formal mathematical apparatus of quantum mechanics, $H$ denotes the Hamiltonian for $\mathcal{S}$, while $ρ$ is a certain rule applied periodically on $\mathcal{S}$. In this approach the rule acts at specific times $kτ$, with $k$ integer and $τ$ fixed, by modifying some of the parameters entering $H$ according to the state variation of the system. As a result, a dynamics admitting an asymptotic equilibrium state can be obtained. Here, we consider the limit for $τ\rightarrow 0$, so that we introduce a generalized model leading to asymptotic equilibria. Moreover, in the case of a two-mode fermionic model, we are able to derive a relation linking the parameters involved in the Hamiltonian to the asymptotic equilibrium states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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