Gravitational induction

零温和有限温度下的引力康普顿散射

Gravitational Compton scattering at zero and finite temperature

本文在引力电磁学（GEM）理论的拉格朗日框架下，利用热场动力学引入热效应，计算并比较了零温与有限温度下引力康普顿散射的截面，同时对比QED并分析高温极限。

基于 gravitomagnetism（GEM）的非零环面纽结引力波

Non-Null Torus Knotted Gravitational Waves from Gravitoelectromagnetism

本文利用GEM框架构建了真空线性化爱因斯坦方程的非零环面纽结单色引力波解，推导了相关几何对象并研究了其GEM起源的对偶势和螺旋度性质。

由空间基引力波观测站观测二元星绕超大质量黑洞轨道激发的引力波可观测性

Observability of gravitational waves excited by binary stars orbiting around a supermassive black hole by space-based gravitational wave observatory

本文研究了空间基引力波探测器观测由二元星绕超大质量黑洞轨道激发的引力波的可观测性，通过考虑引力-电磁力的影响，验证了B-EMRIs波形的可区分性。

MAGGIE：一种磁性引力波感应实验

MAGGIE: A Magnetic Gravitational Wave Induction Experiment

MAGGIE是欧洲首个集总元件高频引力波探测器，利用14 T螺线管磁体探测kHz-MHz频段引力波，通过定制拾取环和8字形几何结构实现噪声抑制，预计可约束未探索的高频引力波参数空间。

Kerr时空上的引力与电磁扰动耦合

Coupling between gravitational and electromagnetic perturbations on Kerr Spacetime

本文研究了Kerr时空上引力与电磁扰动的耦合，推导了二次电磁源项，并探讨了GEM二次quasinormal modes在天体物理中的应用及对引力-电磁耦合的测试方法。

Gravitational Casimir Effect in Inspiralling Neutron Star Binary

Currently, the discussions and investigations for the vacuum energy is drawing great both theoretical and experimental attention. The vacuum states of variety of fields, subject to special boundary conditions, may contribute to non-trivial macroscopic vacuum energy, i.e. the Casimir effect, which become an interdisciplinary subject and plays an important role in a variety of fields of physics. We adopt Schwinger's source theory and study the Casimir effect due to the quantization of gravitation, i.e. the gravitational Casimir effect (GCE), in inspiraling neutron star (NS) binaries with wide se…

Dark matter cavity and amplification of gravitational waves

The linearized Einstein theory in the approximately flat time-space is modified accounting for a massive graviton as a dark matter in the universe. On the basis of magnetic-type Maxwell- Proca -Vlasov equations, the interactions of the gravitoelectromagnetic fields (GEM), involving the vector potential, with gravitons (dark matter) dealing with resonant wave-particle and wave-wave one are studied. It is found that the behavior of the perturbed GEM fields and the perturbed matter density can be described by the nonlinear coupling Eqs.(4.6) and(4.7). It is shown that the perturbed field is insta…

The role of observers in the measurement of the Teleparallel Gravitoelectromagnetic fields in different geometries

In the context of the Teleparallel Equivalent of General Relativity (TEGR) we have investigated the role of local observers, associated with tetrad fields, in description of the gravitational interaction through the concepts of the gravitoelectric (GE) and gravitomagnetic (GM) fields. We start by analyzing the gravitoelectromagnetic (GEM) fields obtained from an observer freely falling in the Schwarzschild space-time. Then, we investigated whether it is possible to distinguish between this situation and to be at rest in the Minkowski space-time. We conclude that, although there are non-zero co…

Novel Ansatzes and Scalar Quantities in Gravito-Electromagnetism

In this work, we focus on the theory of Gravito-Electromagnetism (GEM) -- the theory that describes the dynamics of the gravitational field in terms of quantities met in Electromagnetism -- and we propose two novel forms of metric perturbations. The first one is a generalisation of the traditional GEM ansatz, and succeeds in reproducing the whole set of Maxwell's equations even for a dynamical vector potential A. The second form, the so-called alternative ansatz, goes beyond that leading to an expression for the Lorentz force that matches the one of Electromagnetism and is free of additional t…

Transferring Energy in General Relativity

A problem in general relativity is, how the gravitational field can transfer energy and momentum between different distant places. The issue is that matter stress tensor is locally conserved, with no explicit interaction with the free gravitational field, which is represented by the Weyl tensor. In this paper we explicitly construct an interaction tensor for free gravity and matter, that depicts the interplay between the energy momentum tensor of free gravity, which is taken to be the symmetric two index square root of Bell-Robinson tensor, and matter. This is examined both in the case of Coul…

Gravito-electromagnetism and decomposition of gravity

We deal with the gravitational theory relevant to gravito-electromagnetism (GEM) exactly. It is shown that the theory can be decomposed in terms of two sectors of Abelian gauge field theories. The two sectors dominate the whole action in an inverse way, showing a sign of strong-weak duality.

Formal analogies between gravitation and electrodynamics

We develop a theoretical framework that allows us to compare electromagnetism and gravitation in a fully covariant way. This new scenario does not rely on any kind of approximation nor associate objects with different operational meaning as it's sometime done in the literature. We construct the electromagnetic analogue to the Riemann and Weyl tensors and develop the equations of motion for these objects. In particular, we are able to identify precisely how and in what conditions gravity can be mapped to electrodynamics. As a consequence, many of the gemometrical tools of General Relativity can…