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In this paper we will show that a new structure of space-time with a minimum speed reveals a connection with Weyl geometry in the approximation of weak-field Newtonian limit. Symmetrical Special Relativity (SSR) has a minimum speed $V$ that…

综合物理 · 物理学 2023-04-05 Cláudio Nassif Cruz , A. C. Amaro de Faria

This paper shows the need of the emergence of a universal minimum speed in the space-time by means of a more thorough investigation of Dirac's large number hypothesis (LNH). We will realize that there should be a minimum speed $V$ with the…

广义相对论与量子宇宙学 · 物理学 2022-03-31 Cláudio Nassif Cruz

This research aims to provide the geometrical foundation of the uncertainty principle within a new causal structure of spacetime so-called Symmetrical Special Relativity (SSR), where there emerges a Lorentz violation due to the presence of…

广义相对论与量子宇宙学 · 物理学 2024-09-10 Cláudio Nassif Cruz

The paper aims to introduce a new symmetry principle in the space-time geometry through the elimination of the classical idea of rest and by including a universal minimum limit of speed in the subatomic world. Such a limit, unattainable by…

广义相对论与量子宇宙学 · 物理学 2016-11-08 Claudio Nassif

We aim to investigate the theory of Lorentz violation with an invariant minimum speed so-called Symmetrical Special Relativity (SSR) from the viewpoint of its metric. Thus we should explore the nature of SSR-metric in order to understand…

In this paper we aim to investigate a deformed relativistic dynamics well-known as Symmetrical Special Relativity (SSR) related to a cosmic background field that plays the role of a variable vacuum energy density associated to the…

综合物理 · 物理学 2020-09-14 Claudio Nassif Cruz , Fernando A. Silva

We show the relationship between the scalar kinematics potential of Symmetrical Special Relativity (SSR) and the ultra-referential of vacuum connected to an invariant minimum speed postulated by SSR. The property of the conformal metric of…

Based on the principle of relativity and the postulate of invariant speed and length, we propose the theory of special relativity with cosmological constant ${\cal SR}_{c,R}$ if the invariant length whose square is the inverse of the…

高能物理 - 理论 · 物理学 2009-11-10 Han-Ying Guo , Chao-Guang Huang , Zhan Xu , Bin Zhou

We construct the cosmological model to explain the cosmological constant problem. We built the extension of the standard cosmological model $\Lambda$CDM by consideration of decaying vacuum energy represented by the running cosmological…

宇宙学与河外天体物理 · 物理学 2015-07-08 Marek Szydlowski

The cosmological constant term (CC), $\Lambda$, is a pivotal ingredient in the standard model of cosmology or $\Lambda$CDM, but it is a rigid quantity for the entire cosmic history. This is unnatural and inconsistent. Different theoretical…

高能物理 - 理论 · 物理学 2024-11-12 Joan Solà Peracaula , Cristian Moreno-Pulido

The paper aims to provide an explanation for the tiny value of the cosmological constant and the low vacuum energy density to represent the dark energy. To accomplish this, we will search for a fundamental principle of symmetry in…

广义相对论与量子宇宙学 · 物理学 2016-11-14 Cláudio Nassif

The main consequences of de Sitter Special Relativity to the Standard Cosmological Model of Physical Cosmology are examined. The cosmological constant Lambda appears, in this theory, as a manifestation of the proper conformal current, which…

广义相对论与量子宇宙学 · 物理学 2010-01-08 R. Aldrovandi , J. G. Pereira

The cosmological constant, i.e., the energy density stored in the true vacuum state of all existing fields in the Universe, is the simplest and the most natural possibility to describe the current cosmic acceleration. However, despite its…

天体物理学 · 物理学 2008-11-26 S. Carneiro , M. A. Dantas , C. Pigozzo , J. S. Alcaniz

Next year we will celebrate 100 years of the cosmological term, $\Lambda$, in Einstein's gravitational field equations, also 50 years since the cosmological constant problem was first formulated by Zeldovich, and almost about two decades of…

宇宙学与河外天体物理 · 物理学 2016-12-14 Joan Sola

Special relativity (SR) with a privileged frame is a framework, which, like the standard relativity theory, is based on the relativity principle and the universality of the (two-way) speed of light but includes a privileged frame as an…

综合物理 · 物理学 2018-05-29 Georgy I. Burde

A modification of the Einstein-Hilbert theory, the Covariant Canonical Gauge Gravity (CCGG), leads to a cosmological constant that represents the energy of the space-time continuum when deformed from its (A)dS ground state to a flat…

广义相对论与量子宇宙学 · 物理学 2023-09-21 D. Vasak , J. Kirsch , J. Struckmeier , H. Stoecker

The present work aims to search for an implementation of a new symmetry in the space-time by introducing the idea of an invariant minimum speed scale ($V$). Such a lowest limit $V$, being unattainable by the particles, represents a…

广义相对论与量子宇宙学 · 物理学 2017-11-27 Cláudio Nassif

The enigmatic phenomenon of dark energy (DE) is regarded as the elusive entity driving the accelerated expansion of our Universe. A plausible candidate for DE is the non-zero Einstein Cosmological Constant $\Lambda_{E}$ manifested as a…

宇宙学与河外天体物理 · 物理学 2025-02-05 Vesselin G. Gueorguiev , Andre Maeder

We consider a Weyl-invariant formulation of gravity with a cosmological constant in d-dimensional spacetime and show that near two dimensions the classical action reduces to the timelike Liouville action. We show that the renormalized…

高能物理 - 理论 · 物理学 2016-08-17 Teresa Bautista , Atish Dabholkar

This paper, which is meant to be a tribute to Minkowski's geometrical insight, rests on the idea that the basic observed symmetries of spacetime homogeneity and of isotropy of space, which are displayed by the spacetime manifold in the…

广义相对论与量子宇宙学 · 物理学 2009-11-13 S. Cacciatori , V. Gorini , A. Kamenshchik
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