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In this note our aim is to show a paradox in the spectral representation of stationary random processes.

Other Statistics · Statistics 2024-11-27 Mohammad Mohammadi , Adel Mohammadpour , Afshin Parvardeh

We propose ten puzzles in particle theory: quark, asymmetries of quantum numbers in the Standard Model, point particle and interaction-distance, mystic Higgs mechanism, possible violation of the Pauli Exclusion Principle and some basic…

General Physics · Physics 2009-08-06 Yi-Fang Chang

This paper outlines a deceptively complex problem in classical mechanics which the paper names the "Falling Astronaut Problem," and it explores a method for teachers to implement this problem in an undergraduate classroom. The paper…

Physics Education · Physics 2025-05-07 Scott C. Scharlach

To clarify some aspects of the application of Special Relativity, spacetime is sliced into null geodesic hypersurfaces as an alternative to the hypersurfaces of simultaneity normally adopted. Events at particle locations on the hypersurface…

General Physics · Physics 2007-05-23 Alasdair Macleod

We review why the Thomas rotation is a crucial facet of special relativity, that is just as fundamental, and just as "unintuitive" and "paradoxical", as such traditional effects as length contraction, time dilation, and the ambiguity of…

High Energy Physics - Phenomenology · Physics 2010-11-19 John P. Costella , Bruce H. J. McKellar , Andrew A. Rawlinson , Gerard J. Stephenson

The Gibbs paradox has frequently been interpreted as a sign that particles of the same kind are fundamentally indistinguishable; and that quantum mechanics, with its identical fermions and bosons, is indispensable for making sense of this.…

Quantum Physics · Physics 2010-03-02 Dennis Dieks

Developing a better understanding of surprising or counterintuitive phenomena has constituted a significant portion of deep learning research in recent years. These include double descent, grokking, and the lottery ticket hypothesis --…

Machine Learning · Computer Science 2025-07-01 Alan Jeffares , Mihaela van der Schaar

In the standard formulation of the twin paradox an accelerated twin considers himself as at rest and his brother as moving. Hence, when formulating the twin paradox, one uses the general principle of relativity, i.e. that accelerated and…

General Physics · Physics 2010-02-23 Oyvind Gron

In this paper we have resolved the apparent paradox of different mechanical equations for force and torque governing the motion of a charged particle in different inertial frames. The same paradox arises in all usual ``explanations'' of the…

General Physics · Physics 2007-05-23 Tomislav Ivezic

Thirty original and collected problems, puzzles, and paradoxes in mathematics and physics are explained in this paper, taught by the author to the elementary and high school teachers at the University of New Mexico - Gallup in 1997-8 and…

General Mathematics · Mathematics 2007-05-23 Florentin Smarandache

Motivation and perspective for an exciting new research direction interconnecting logic, spacetime theory, relativity--including such revolutionary areas as black hole physics, relativistic computers, new cosmology--are presented in this…

General Relativity and Quantum Cosmology · Physics 2007-07-17 Judit X. Madarasz , Istvan Nemeti , Gergely Szekely

In deformed or doubly special relativity (DSR) the action of the lorentz group on momentum eigenstates is deformed to preserve a maximal momenta or minimal length, supposed equal to the Planck length. The classical and quantum dynamics of a…

General Relativity and Quantum Cosmology · Physics 2015-05-18 Lee Smolin

The goal of this lecture is to introduce the student to the theory of Special Relativity. Not to overload the content with mathematics, the author will stick to the simplest cases; in particular only reference frames using Cartesian…

Accelerator Physics · Physics 2022-01-20 Eliana Gianfelice-Wendt

We consider the Novikov problem, namely, the problem of describing the level lines of quasiperiodic functions on the plane, for a special class of potentials that have important applications in the physics of two-dimensional systems.…

Mathematical Physics · Physics 2024-12-17 A. Ya. Maltsev

In this article we propose a new relativistic paradox concerning the absorption of a photon by a hydrogen atom. We show that the actual cause of the paradox is one of the hypotheses of Bohr model; therefore, in order to solve the paradox,…

General Physics · Physics 2013-10-15 Carlo Maria Scandolo

We show that some primary special relativity effects, which are believed to be hardly detectable in everyday life, such as time dilation, relativistic Doppler effect, and length contraction, should tangibly and spectacularly show up here on…

General Physics · Physics 2022-04-12 Germano D'Abramo

Motivated by the apparent lack of a workable hypothesis we developed a model to describe phenomena such as entanglement and the EPR-paradox. In the model we propose the existence of extra hidden dimensions. Through these dimensions it will…

Quantum Physics · Physics 2007-05-23 A. Dietrich , W. Been

I discuss some general information-theoretic properties of quantum mechanical probes in semiclassical gravity: their purview, i.e. what they can see and act on (in terms of a generalised entanglement wedge), their spontaneous evaporation…

High Energy Physics - Theory · Physics 2023-04-14 Josh Kirklin

The past few years have seen dramatic breakthroughs and spectacular and puzzling discoveries in astrophysics and cosmology. In many cases, the new observations can only be explained with the introduction of new fundamental physics. Here we…

High Energy Physics - Phenomenology · Physics 2010-12-09 Daniel S. Akerib , Sean M. Carroll , Marc Kamionkowski , Steven Ritz

We review some outstanding puzzles and experimental anomalies in hadron physics that appear to challenge conventional wisdom and, in some cases, the foundations of QCD. We also discuss possible solutions and propose new tests and…

High Energy Physics - Phenomenology · Physics 2013-02-25 Stanley J. Brodsky , Guy de Teramond , Marek Karliner