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相关论文: Dynamic aether as a trigger for spontaneous spinor…

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Within the scope of Bianchi type-VI cosmological model we study the role of spinor field in the evolution of the Universe. It is found that due to the spinor affine connections the energy-momentum tensor of the spinor field possesses…

广义相对论与量子宇宙学 · 物理学 2016-05-24 Bijan Saha

This document is the Special Issue of the First International Conference on the Evolution and Development of the Universe (EDU 2008). Please refer to the preface and introduction for more details on the contributions. Keywords:…

The solution to the current extending Universe problem, and the description of all stages of evolution compels scientists to consider various cosmological models. Scalar - tensor models are rather simple and also allow us to clearly define…

广义相对论与量子宇宙学 · 物理学 2015-06-23 K. E. Osetrin , A. N. Makarenko , Yu. A. Rybalov

In this paper, we consider fermionic systems in discrete spacetime evolving with a strict notion of causality, meaning they evolve unitarily and with a bounded propagation speed. First, we show that the evolution of these systems has a…

量子物理 · 物理学 2014-01-08 Terence C. Farrelly , Anthony J. Short

We propose a mechanism of inductance operation originating from a dynamical Aharonov-Casher (AC) phase of an electron in ferromagnets. By taking into account spin-orbit coupling effects, we extend the theory of emergent inductance, which…

介观与纳米尺度物理 · 物理学 2021-09-09 Yuta Yamane , Shunsuke Fukami , Jun'ichi Ieda

In the framework of the extended Einstein-aether-axion theory we study the model of a two-level aetheric control over the evolution of a spatially isotropic homogeneous Universe filled with axionic dark matter. Two guiding functions are…

广义相对论与量子宇宙学 · 物理学 2024-02-13 Alexander B. Balakin , Amir F. Shakirzyanov

We suggest model equations, which, from some point of view, describe local interaction of three physical fields: a field of matter, an electromagnetic field and a gravitational field. A base of the model is a field of matter described by…

数学物理 · 物理学 2007-05-23 N. G. Marchuk

Exact solutions of the Dirac equation, a system of four partial differential equations, are rare. The vast majority of them are for highly symmetric stationary systems. Moreover, only a handful of solutions for time dependent dynamics…

量子物理 · 物理学 2021-03-24 Andre G. Campos , Karen Z. Hatsagortsyan , Christoph H. Keitel

We explore new aspects of internal fermionic shifting symmetries, present in physical systems such as free Dirac spinors and p-form tensor-spinor fields. We propose a novel procedure to gauge these global symmetries, which also introduces a…

高能物理 - 理论 · 物理学 2024-11-07 Federico Ambrosino , Ran Luo , Yi-Nan Wang , Yi Zhang

As previously shown, the special relativistic dynamical equation of the Lorentz force type can be regarded as a consequence of a succession of space-time dependent infinitesimal Lorentz boosts and rotations. This insight indicate that the…

数学物理 · 物理学 2011-06-08 J. Buitrago , S. Hajjawi

We study the cosmological evolution of the field equations in the context of Einstein-Aether cosmology by including a scalar field in a spatially flat Friedmann--Lema\^{\i}tre--Robertson--Walker spacetime. Our analysis is separated into two…

广义相对论与量子宇宙学 · 物理学 2020-01-17 Andronikos Paliathanasis , G. Papagiannopoulos , Spyros Basilakos , John D. Barrow

We study the primordial perturbations generated during a stage of single-field inflation in Einstein-aether theories. Quantum fluctuations of the inflaton and aether fields seed long wavelength adiabatic and isocurvature scalar…

宇宙学与河外天体物理 · 物理学 2015-03-13 Cristian Armendariz-Picon , Noela Farina Sierra , Jaume Garriga

We propose a new mechanism to produce a fermion mass hierarchy dynamically in a model with a singlet generation of fermions. A five dimensional gauge theory on an interval with point interactions (zero-width branes) takes responsibility for…

高能物理 - 理论 · 物理学 2018-06-27 Yukihiro Fujimoto , Takashi Miura , Kenji Nishiwaki , Makoto Sakamoto

An Ising-type classical statistical model is shown to describe quantum fermions. For a suitable time-evolution law for the probability distribution of the Ising-spins our model describes a quantum field theory for Dirac spinors in external…

高能物理 - 理论 · 物理学 2011-11-18 C. Wetterich

The acceleration of the universe is described as a dynamical effect of the extrinsic curvature of space-time. By extending previous results, the extrinsic curvature is regarded as an independent spin-2 field, determined by a set of…

宇宙学与河外天体物理 · 物理学 2009-05-27 M. D. Maia , A. J. S. Capistrano , J. S. Alcaniz , E. M. Monte

Emergent scenario of cosmic evolution is a topic of great interest in recent cosmology, especially because it describes a non-singular origin of the Universe unlike the Big-Bang models. This types of cosmic evolution pattern have already…

广义相对论与量子宇宙学 · 物理学 2023-09-01 Subhayan Maity , Sujayita Bakra

Coexistence of order and fluidity in soft matter often mimics that in biology, allowing for complex dynamics and applications like displays. In active soft matter, emergent order can arise because of such dynamics. Powered by local energy…

软凝聚态物质 · 物理学 2019-10-18 Hayley R. O. Sohn , Changda D. Liu , Ivan I. Smalyukh

In the framework of the Einstein-Maxwell-aether theory we study the birefringence effect, which can occur in the pp-wave symmetric dynamic aether. The dynamic aether is considered to be latently birefringent quasi-medium, which displays…

广义相对论与量子宇宙学 · 物理学 2017-11-22 Timur Yu. Alpin , Alexander B. Balakin

We investigate numerically the self-sustained dynamo action in a spinning sphere whose sense of rotation reverses periodically. This system serves as a simple model of a dynamo in small bodies powered by frequent collisions. It is found…

地球物理 · 物理学 2015-06-18 Xing Wei , Rainer Arlt , Andreas Tilgner

We investigate a $(n+1)$-dimensional generalized Randall-Sundrum model with an anisotropic metric which has three different scale factors. One obtain a positive effective cosmological constant $\Omega_{eff}\sim10^{-124}$ (in Planck unit)…

广义相对论与量子宇宙学 · 物理学 2020-12-02 Guang-Zhen Kang , De-Sheng Zhang , Long Du , Dan Shan , Hong-Shi Zong