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In this short paper we follow the entropic gravity approach and demonstrate how \(f(R)\) theories of gravity can be emergent. This is done by introducing an effective gravitational constant which is naturally arising from the \(f(R)\)'s…

High Energy Physics - Theory · Physics 2017-05-08 Ali Teimouri

We revisit a question asked by Dyson: "Is a graviton detectable?" We demonstrate that in both Dyson's original sense and in a more modern measurement-theoretic sense, it is possible to construct a detector sensitive to single gravitons, and…

High Energy Physics - Theory · Physics 2024-06-21 Daniel Carney , Valerie Domcke , Nicholas L. Rodd

An approach to modelling the universe based on the requisites of gravitational energy. This model is explained as it relates to the stages of the universal life cycle and the continued existence of the universe as it is known today. The…

Astrophysics · Physics 2007-05-23 Anthony Baldocchi

A gravitational machine is defined as an arrangement of gravitating masses from which useful energy can be extracted. It is shown that such machines may exist if the masses are of normal astronomical size. A simple example of a…

General Relativity and Quantum Cosmology · Physics 2023-05-19 Freeman J. Dyson

There is an electromagnetic factor of correlation between gravitational mass and inertial mass, which in specific electromagnetic conditions, can be reduced, made negative and increased in numerical value. This means that gravitational…

General Physics · Physics 2013-12-04 Fran De Aquino

We explore a novel process in the early Universe in which thermalized photons are converted into gravitons in the presence of strong primordial magnetic fields. It is found that the frequency of generated gravitational waves (GWs) is…

Cosmology and Nongalactic Astrophysics · Physics 2020-11-19 Tomohiro Fujita , Kohei Kamada , Yuichiro Nakai

The main object of the proposed theory is not a pseudometric, but a symmetric affine connection on the Minkowski space. The coefficients of this connection have one upper and two lower indices. These coefficients are symmetric with respect…

High Energy Physics - Theory · Physics 2007-05-23 Yu. M. Zinoviev

A new type of antenna, which we have called Ferromagnetic Antenna, has been considered for Generation and Detection of Gravitational Radiation. A simple experiment, in which gravitational radiation at 10 GHz can be emitted and received in…

General Physics · Physics 2007-05-23 Fran De Aquino

We consider the creation of artificial gauge magnetic and electric fields created when a two-level atom interacts with an optical Ferris wheel light field.These fields have the spatial structure of the optical Ferris wheel field intensity…

Quantum Physics · Physics 2016-09-05 V. E. Lembessis , A. Alqarni , S. Alshamari , A. Siddig , O. M. Aldossary

Artificial gauge fields are currently realized in a wide range of physical settings. This includes solid-state devices but also engineered systems, such as photonic crystals, ultracold gases and mechanical setups. It is the aim of this…

Mesoscale and Nanoscale Physics · Physics 2018-12-05 M. Aidelsburger , S. Nascimbene , N. Goldman

We show that if one starts with a Universe with some matter and a cosmological constant, then quantum mechanics naturally induces an attractive gravitational potential and an effective Newton's coupling. Thus gravity is an emergent…

General Relativity and Quantum Cosmology · Physics 2022-01-26 Saurya Das , Sourav Sur

A natural two-metric formalism, generated by the world function of the space-time, is used. This circumstance admits one to localize the relative gravitational field, which is described by a tensor.

General Physics · Physics 2011-08-01 Yuri A. Rylov

Einstein, when he began working on the general theory of relativity, believed that energy of any kind is the source of the gravitational field. Therefore, the energy of gravity, like any energy, must be the source of the field. It was…

General Physics · Physics 2025-04-22 V. B. Morozov

The hypothesis of an alternative way of obtaining gravitational waves is the physical motivation of this article. Using the linear field approximation and a symmetry transformation of the affine connection, new field equations and new gauge…

General Physics · Physics 2022-09-14 Sergio Giardino

A strong electron current triggered by a femtosecond relativistically intense laser pulse in a foil coil-like target is shown to be able to generate a solenoidal-type extremely strong magnetic field. The magnetic field lifetime sufficiently…

Plasma Physics · Physics 2019-05-21 A. V. Brantov , Ph. Korneev , V. Yu. Bychenkov

In this article, a developed, manufactured and tested model of a new type generator is presented, which allows to differentiate and predict, with probability close to 1, coasting characteristics of the rotor during its clockwise and…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Yu. A. Baurov , A. V. Chernikov

The purpose of this communication is to suggest that the mechanism for generating the geomagnetic field and the energy source for powering it are one and the same, a nuclear georeactor at the center of the Earth. Toward this end, I: i)…

Geophysics · Physics 2007-08-28 J. Marvin Herndon

After a preliminary discussion of the relevance of the field nature of gravitation interaction, both for the fundamental interaction of particles and the topology of space time, a method is proposed to produce and detect a dynamical…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Bruno Ferretti

Gravitational wave generation by a strong shock wave in the interaction of high power laser with matter is analyzed in linear approximation of gravitational theory. The analytical formulas and estimates are derived for the metric…

General Relativity and Quantum Cosmology · Physics 2017-05-24 Hedvika Kadlecová , Ondřej Klimo , Stefan Weber , Georg Korn

We present a short overview of the structure and couplings of supergravity theories at the component level. We do so with as little technical machinery as possible, working directly with the physical on-shell fields and using explicit…

High Energy Physics - Theory · Physics 2023-02-16 Gianguido Dall'Agata , Marco Zagermann