带有自耦合膨胀标量场的非交换支割量子引力:动力学方程

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Peter O. Hess, Fridolin Weber, Benno Bodmann, José de Freitas Pacheco, Dimiter Hadjimichef, Marcelo Netz-Marzola, Geovane Naysinger, Moisés Razeira, César A. Zen Vasconcellos
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引用次数: 0

摘要

本文重点研究了基于非交换支割宇宙学、惠勒-德威特(WdW)方程、霍拉瓦-利夫希兹量子引力、混沌以及相应拉格朗日方法与胀气标量场耦合的新近发展的表述。假设变量的迷你超空间服从非交换泊松代数,我们研究了膨胀标量场对分支切割宇宙尺度因子演化动力学的影响,该尺度因子的特征是无量纲螺旋状函数 ln-1[β(t)]$$ {\ln}^{-1}\left[\beta (t)\right] $$。这个尺度因子是黎曼叶状时空的特征,它在拓扑上克服了原始奇异性。我们以分支切割量子引力模型中的霍扎瓦-利夫希茨(Hořava-Lifshitz)作用为出发点,它取决于分支宇宙的标量曲率及其导数,保留了广义相对论的差分变形特性,与阿诺维特-戴塞尔-米斯纳形式主义保持兼容。然后,我们研究了分支宇宙动力学尺度因子的敏感性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Noncommutative branch-cut quantum gravity with a self-coupling inflation scalar field: Dynamical equations

This article focuses on a recently developed formulation based on the noncommutative branch-cut cosmology, the Wheeler-DeWitt (WdW) equation, the Hořava–Lifshitz quantum gravity, chaotic and the coupling of the corresponding Lagrangian approach with the inflaton scalar field. Assuming a mini-superspace of variables obeying the noncommutative Poisson algebra, we examine the impact of the inflaton scalar field on the evolutionary dynamics of the branch-cut Universe scale factor, characterized by the dimensionless helix-like function ln 1 [ β ( t ) ] $$ {\ln}^{-1}\left[\beta (t)\right] $$ . This scale factor characterizes a Riemannian foliated spacetime that topologically overcomes the primordial singularities. We take the Hořava–Lifshitz action modeled by branch-cut quantum gravity as our starting point, which depends on the scalar curvature of the branched Universe and its derivatives and which preserves the diffeomorphism property of General Relativity, maintaining compatibility with the Arnowitt–Deser–Misner formalism. We then investigate the sensitivity of the scale factor of the branch-cut Universe's dynamics.

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来源期刊
Astronomische Nachrichten
Astronomische Nachrichten 地学天文-天文与天体物理
CiteScore
1.80
自引率
11.10%
发文量
57
审稿时长
4-8 weeks
期刊介绍: Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.
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