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We describe space--time fluctuations by means of small fluctuations of the metric on a given background metric. From a minimally coupled Klein--Gordon equation we obtain within a weak-field approximation up to second order and an averaging…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Ertan Göklü , Claus Lämmerzahl

In this paper is presented a general-relativistic approach of cuasi-neutral bodies endowed with magnetic field. Starting from the similarity of neutron particles with neutron stars for which the general-relativistic framework is imposed,…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Maria Cristina Neacsu

We consider the metrics of the General Relativity, whose energy-momentum tensor has a bounded support where it is continuous except for a finite step across the corresponding boundary surface. As a consequence, the first derivative of the…

广义相对论与量子宇宙学 · 物理学 2019-10-18 Ramon Lapiedra , Juan Antonio Morales-Lladosa

A novel two-tiered organization of the microworld is presented, in which only the fundamental quantum fields of the standard model of particle physics (electrons, photons, quarks, etc.) are true quantum waves, exhibiting linear…

综合物理 · 物理学 2011-07-29 Alan M. Kadin

In the macroscopic gravity approach to the averaging problem in cosmology, the Einstein field equations on cosmological scales are modified by appropriate gravitational correlation terms. We study the averaging problem within the class of…

广义相对论与量子宇宙学 · 物理学 2008-11-26 A. A. Coley , N. Pelavas

We consider the concept of fundamental bias in gravitational wave astrophysics as the assumption that general relativity is the correct theory of gravity during the entire wave-generation and propagation regime. Such an assumption is valid…

广义相对论与量子宇宙学 · 物理学 2009-12-30 Nicolas Yunes , Frans Pretorius

Fully covariant wave equations predict the existence of a class of inertial-gravitational effects that can be tested experimentally. In these equations inertia and gravity appear as external classical fields, but, by conforming to general…

广义相对论与量子宇宙学 · 物理学 2007-05-23 G. Papini

The theory of gauge transformations in linearized gravitation is investigated. After a brief discussion of the fundamentals of the kinetic theory in curved spacetime, the Einstein-Vlasov-Maxwell system of equations in terms of gauge…

等离子体物理 · 物理学 2024-08-06 Lucas Bourscheidt , Fernando Haas

We describe how the kinematic consistency relations satisfied by density correlations of the large-scale structures of the Universe can be derived within the usual Newtonian framework. These relations express a kinematic effect and show how…

宇宙学与河外天体物理 · 物理学 2015-06-17 Patrick Valageas

Gravitational waves and cosmic expansion are both described in terms of Einstein's general relativity. This article explores the similarities between the two phenomena, as well as some differences, using the fundamental concept of the…

广义相对论与量子宇宙学 · 物理学 2017-03-30 Markus Pössel

Interfering electrons in a mesoscopic ring are irradiated with both classical and nonclassical microwaves. The average intensity of the charges is calculated as a function of time and it is found that it depends on the nature of the…

介观与纳米尺度物理 · 物理学 2017-08-23 D. I. Tsomokos , C. C. Chong , A. Vourdas

Electron interference in mesoscopic devices irradiated by external non-classical microwaves, is considered. In the case of one-mode microwaves, it is shown that both the average intensity and the spectral density of the interfering…

凝聚态物理 · 物理学 2009-11-10 C. C. Chong , D. I. Tsomokos , A. Vourdas

The so-called quantum measurement problems are solved from a new perspective. One of the main observations is that the basic entities of our world are {\it particles}, elementary or composite. It follows that each elementary process, hence…

量子物理 · 物理学 2023-02-20 Kenichi Konishi

Here the probability density of relativistic particles coordinates, satisfying the formal conditions of the quantum mechanics and the special relativity, is determined (under textbooks view, such density does not exist). It is specified for…

量子物理 · 物理学 2009-03-17 V. F. Krotov

We present a theoretical description of a system of many spins strongly coupled to a bosonic chain. We rely on the use of a spin-wave theory describing the Gaussian fluctuations around the mean-field solution, and focus on spin-boson chains…

量子物理 · 物理学 2015-06-12 Pedro Nevado , Diego Porras

A non-geometrical (but with curved space) theory of gravitation characterized by a vector field representing gravitational matter and a metric tensor presenting space is presented. It is derived from a more general theory of matter and…

广义相对论与量子宇宙学 · 物理学 2008-03-13 Boris Hikin

The construction of an averaged theory of gravity based on Einstein's General Relativity is very difficult due to the non-linear nature of the gravitational field equations. This problem is further exacerbated by the difficulty in defining…

广义相对论与量子宇宙学 · 物理学 2010-04-16 R. J. van den Hoogen

A one-parameter random matrix model is proposed for describing the statistics of the local amplitudes and phases of electron eigenfunctions in a mesoscopic quantum dot in an arbitrary magnetic field. Comparison of the statistics obtained…

凝聚态物理 · 物理学 2009-10-28 E. Kanzieper , V. Freilikher

We define the notion of mutual quantum measurements of two macroscopic objects and investigate the effect of these measurements on the velocities of the objects. We show that multiple mutual quantum measurements can lead to an effective…

量子物理 · 物理学 2021-06-23 Walter Hahn , Boris V. Fine

The physical consistency of the match of piecewise-$C^0$ metrics is discussed. The mathematical theory of gravitational discontinuity hypersurfaces is generalized to cover the match of regularly discontinuous metrics. The mean-value…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Gianluca Gemelli