Information entropy and dark energy evolution
Information entropy and dark energy evolution
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DOI：
10.1142/s0218271818500293
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发表时间：
2018-02-01
影响因子：
2.2
通讯作者：
Luongo, Orlando
中科院分区：
文献类型：
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作者：
Capozziello, Salvatore;Luongo, Orlando
在这里，信息熵研究的背景下，早期和晚期宇宙学的假设下，宇宙演化的不同阶段之间纠缠。该方法是基于纠缠态的量子力学，代表了一个粗粒度的定义与有效的纠缠能量密度相关联的原始暗温度。暗温度的定义来自于假设冯·诺依曼或线性熵作为宇宙热力学的来源。我们通过宇宙演化过程中形成结构的概率来解释所涉及的信息熵。根据这个配方，我们提出，量子熵是简单地关联到熵和我们调查的结果，我们的方法使用绝热声速。作为副产品，我们分析了宇宙演化的两个阶段：晚期和早期阶段。为此，我们首先恢复暗能量减少到纯宇宙学常数，作为零阶纠缠贡献，其次通过有效势很好地描述了暴胀。在这两种情况下，我们推断出与当前观测结果相一致的数值极限。
Here, the information entropy is investigated in the context of early and late cosmology under the hypothesis that distinct phases of universe evolution are entangled between them. The approach is based on the entangled state ansatz, representing a coarse-grained definition of primordial dark temperature associated to an effective entangled energy density. The dark temperature definition comes from assuming either Von Neumann or linear entropy as sources of cosmological thermodynamics. We interpret the involved information entropies by means of probabilities of forming structures during cosmic evolution. Following this recipe, we propose that quantum entropy is simply associated to the thermodynamical entropy and we investigate the consequences of our approach using the adiabatic sound speed. As byproducts, we analyze two phases of universe evolution: the late and early stages. To do so, we first recover that dark energy reduces to a pure cosmological constant, as zero-order entanglement contribution, and second that inflation is well-described by means of an effective potential. In both cases, we infer numerical limits which are compatible with current observations.