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Physics makes powerful use of mathematics, yet the way this use is made is often poorly understood. Professionals closely integrate their mathematical symbology with physical meaning, resulting in a powerful and productive structure. But…

物理教育 · 物理学 2010-02-03 Edward F. Redish , Ayush Gupta

A new direction to understand gravity has recently been explored by considering classical gravity to be a derived interaction from an underlying theory. This underlying theory would involve new degrees of freedom at a deeper level and it…

综合物理 · 物理学 2014-03-10 Yuan K. Ha

General relativity is highly successful in explaining a wide range of gravitational phenomena including the gravitational waves emitted by binary systems and the shadows cast by supermassive black holes. From a modern perspective the theory…

广义相对论与量子宇宙学 · 物理学 2024-07-26 Jesse Daas , Cristobal Laporte , Frank Saueressig , Tim van Dijk

The question of what should be meant by a measurement is tackled from a mathematical perspective whose physical interpretation is that a measurement is a fundamental process via which a finite amount of classical information is produced.…

量子物理 · 物理学 2023-01-10 Pedro Resende

The ability to discover abstract physical concepts and understand how they work in the world through observing lies at the core of human intelligence. The acquisition of this ability is based on compositionally perceiving the environment in…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Qu Tang , XiangYu Zhu , Zhen Lei , ZhaoXiang Zhang

The concepts of bare and effective mass are widely used within modern physics. Their meaning is discussed in advanced undergraduate and graduate courses such as solid state physics, nuclear physics and quantum field theory. Here, I discuss…

物理教育 · 物理学 2008-11-26 Marcus Benghi Pinto

Being mathematics a natural language to Mankind and to physics, it must be constantly adapted to our necessities and our natural perception. Then, mathematical concepts are not absolute to reality. Although mathematical theories are…

综合物理 · 物理学 2007-05-23 Mauricio Ayala

In this paper, we give more general definitions of weighted means and MN-convex functions. Using these definitions, we also obtain some generalized results related to properties of MN-convex functions. The importance of this study is that…

综合数学 · 数学 2021-10-05 İmdat İşcan

Evaluation of gravity control concepts should be examined with respect to currently known physical theories. In this work we study the hypothetical conversion of gravitational potential energy into kinetic energy using the formalism of…

空间物理 · 物理学 2008-11-26 O. Bertolami , F. G. Pedro

Even though the concepts of time and space are basic concepts of physics, they have not been vouchsafed a constructive definition. As to space, this is no wonder because a correct notion of space cannot be formed in the frame of the…

综合物理 · 物理学 2007-05-23 Yefim Bakman , Boris Pogorelsky

We have recently shown that both passive and active gravitational masses of a composite body are not equivalent to its energy due to some quantum effects. We have also suggested an idealized and more realistic experiments to detect the…

广义相对论与量子宇宙学 · 物理学 2017-03-02 Andrei G Lebed

We discuss the physical interpretation of the gravity mediated entanglement effect. We show how to read it in terms of quantum reference systems. We pinpoint the single gravitational degree of freedom mediating the entanglement. We clarify…

量子物理 · 物理学 2023-02-08 Marios Christodoulou , Andrea Di Biagio , Richard Howl , Carlo Rovelli

The functional interpretation is a systematic, syntactic method for transforming certain non-constructive proofs into constructive proofs with explicit bounds. We illustrate the interpretation by working through a concrete, fairly simple…

逻辑 · 数学 2015-03-20 Henry Towsner

Previous work established a universal form for the equation of motion of small bodies in theories of a metric and other tensor fields that have second-order field equations following from a covariant Lagrangian in four spacetime dimensions.…

广义相对论与量子宇宙学 · 物理学 2015-06-15 Samuel E Gralla

In this paper, it is argued that theoretical physics is more akin to an organism than to a rigid structure.It is in this sense that the epithet, "sick", applies to it. It is argued that classical physics is a model of a healthy science, and…

综合物理 · 物理学 2012-09-05 Hisham Ghassib

The "external" or "bulk" motion of extended bodies is studied in general relativity. Compact material objects of essentially arbitrary shape, spin, internal composition, and velocity are allowed as long as there is no direct…

广义相对论与量子宇宙学 · 物理学 2012-06-07 Abraham I. Harte

Importance weighting is a fundamental procedure in statistics and machine learning that weights the objective function or probability distribution based on the importance of the instance in some sense. The simplicity and usefulness of the…

机器学习 · 计算机科学 2024-05-15 Masanari Kimura , Hideitsu Hino

This thesis is about conceptual aspects of gauge theories. Gauge theories lie at the heart of modern physics: in particular, they constitute the standard model of particle physics. At its simplest, the idea of gauge is that nature is best…

物理学史与哲学 · 物理学 2022-04-13 Henrique Gomes

The concept of velocity dependent mass, relativistic mass, is examined and is found to be inconsistent with the geometrical formulation of special relativity. This is not a novel result; however, many continue to use this concept and some…

物理教育 · 物理学 2007-05-23 Gary Oas

The Weak Gravity Conjecture holds that in a theory of quantum gravity, any gauge force must mediate interactions stronger than gravity for some particles. This statement has surprisingly deep and extensive connections to many different…

高能物理 - 理论 · 物理学 2023-09-14 Daniel Harlow , Ben Heidenreich , Matthew Reece , Tom Rudelius