量子BPS宇宙学

IF 3.6 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Classical and Quantum Gravity Pub Date : 2025-02-26 DOI:10.1088/1361-6382/adb6ed

Nahomi Kan, Kiyoshi Shiraishi, Maki Takeuchi and Mai Yashiki

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引用次数: 0

摘要

在量子理论的背景下，关于早期宇宙的初始条件有很多讨论。在具有空间均匀标量场的超空间量子宇宙学中，我们采用量子版的BPS方程来代替通常的Wheeler-DeWitt方程来构造波函数和概率分布。虽然本研究中处理的模型在技术上适用于有限形式的标量势，但我们表明，在我们的模型中可以构造一个守恒的概率电流。我们还研究了具有Dirac-Born-Infeld型标量场的模型的经典和量子方面。

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Quantum BPS cosmology

There has been much discussion about the initial conditions of the early Universe in the context of quantum theory. In this paper, we construct the wave function and probability distribution by adopting the quantum version of the BPS equation instead of the usual Wheeler–DeWitt equation in a minisuperspace quantum cosmology with spatially uniform scalar fields. Although the model treated in this study is technically valid for a limited form of scalar potential, we show that it is possible to construct a conserved probability current in our model. We also examine classical and quantum aspects of models with the Dirac–Born–Infeld type scalar fields.

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来源期刊

Classical and Quantum Gravity 物理-天文与天体物理

CiteScore

7.00

自引率

8.60%

发文量

301

审稿时长

2-4 weeks

期刊介绍： Classical and Quantum Gravity is an established journal for physicists, mathematicians and cosmologists in the fields of gravitation and the theory of spacetime. The journal is now the acknowledged world leader in classical relativity and all areas of quantum gravity.