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arXiv · 2108.02172

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

Rosa Di Salvo·Matteo Gorgone·Francesco Oliveri
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Abstract

In some recent papers, the so called $(H,\rho)$-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 $\rho$ is a certain rule applied periodically on $\mathcal{S}$. In this approach the rule acts at specific times $k\tau$, with $k$ integer and $\tau$ 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 $\tau\rightarrow 0$, 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.

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Rosa Di Salvo, Matteo Gorgone, Francesco Oliveri. 2021-08-02. Generalized Hamiltonian for a two-mode fermionic model and asymptotic equilibria. https://doi.org/10.1016/j.physa.2019.123032

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