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Advantages and disadvantages of fixation of fundamental physical constants' values for definition of SI units are considered. The case with a new definition of the mass unit on the base of a fixed value of the Avogadro constant is studied…

原子物理 · 物理学 2011-02-24 V. V. Khruschov

Experimental evidence over a number of recent years has shown the density parameter of the universe omega converging to the critical value of 1, which defines a flat, Euclidean universe. No such calculations have defined a critical value…

综合物理 · 物理学 2013-06-20 Peter Rowlands

The Higgs concept can be assigned a precise quantitative cosmic identity with a physically anchored cryptographic analysis. Specifically demonstrated is the direct correspondence of the supersymmetric solution pair (BHh1 and BHh2) of the…

综合物理 · 物理学 2012-02-14 Charles Rhodes

Evidence for the existence of a superheavy nucleus with atomic mass number A=292 and abundance (1-10)x10^(-12) relative to 232Th has been found in a study of natural Th using inductively coupled plasma-sector field mass spectrometry. The…

核实验 · 物理学 2011-04-07 A. Marinov , I. Rodushkin , D. Kolb , A. Pape , Y. Kashiv , R. Brandt , R. V. Gentry , H. W. Miller

It has been conjectured for some time that, for any integer n\ge 2, any real number \epsilon >0 and any transcendental real number \xi, there would exist infinitely many algebraic integers \alpha of degree at most n with the property that…

数论 · 数学 2007-05-23 Damien Roy

We report a new value of electron $g-2$, or $a_e$, from 891 Feynman diagrams of order $\alpha^4$. The FORTRAN codes of 373 diagrams containing closed electron loops have been verified by at least two independent formulations. For the…

高能物理 - 唯象学 · 物理学 2011-02-16 T. Kinoshita , M. Nio

The discovery of neutrino oscillations has shown that neutrinos, in contradiction to a prediction of the minimal standard model, have mass. Oscillations do not yield a value for the mass, but do set a lower limit of 0.02 eV on the average…

核实验 · 物理学 2015-02-03 R. G. Hamish Robertson

In a recent preprint on arXiv Roland Bacher showed that the number $p_d$ of non-similar perfect $d$-dimensional quadratic forms satisfies $e^{\Omega(d)} < p_d < e^{O(d^3\log(d))}$. We improve the upper bound to $e^{O(d^2\log(d))}$ by a…

数论 · 数学 2020-11-17 Wessel P. J. van Woerden

Recently, we have proposed the existence of a universal relation between the maximal electric charge and total mass of any weakly self-gravitating object: $Z\leq Z^*={\alpha}^{-1/3}A^{2/3}$, where $Z$ is the number of protons, $A$ is the…

高能物理 - 理论 · 物理学 2011-01-10 Shahar Hod

In this article we study the number of different cuboids $\mathcal{O}(N)$ that can be built with an arbitrary number $N$ of equal cubes. This problem is equivalent to find the number of different cuboids of volume $N$ with integer length…

组合数学 · 数学 2017-06-08 Daniel Blasi Babot

The fine-structure constant {\alpha}, the dimensionless number that represents the strength of electromagnetic coupling in the limit of sufficiently low energy interactions, is the crucial fundamental physical parameter that governs a…

综合物理 · 物理学 2012-02-14 Charles Kirkham Rhodes

We investigate the isobar of an ideal Bose gas confined in a cubic box within the grand canonical ensemble, for a large yet finite number of particles, N. After solving the equation of the spinodal curve, we derive precise formulae for the…

量子气体 · 物理学 2011-09-29 Imtak Jeon , Sang-Woo Kim , Jeong-Hyuck Park

Half-life values are widely used in nuclear chemistry to model the exponential decay of the quantified radionuclides. The analysis of existing data reveals a general lack of information on the performed experiments and an almost complete…

核实验 · 物理学 2016-11-22 Giancarlo D'Agostino , Marco Di Luzio , Giovanni Mana , Massimo Oddone

Using the Planck scale as an absolute bound of half-life, we give a quick estimate, in the manner of Feynman's fine-structure method, of the highest possible atomic number. We find, upon simple extrapolation, that element 168 would…

核理论 · 物理学 2018-11-28 Yang-Hui He , Stavros Garoufalidis

With the redefinition of the international system of units, the value of the Planck constant was fixed, similarly to the values of the unperturbed ground state hyperfine transition frequency of the $^{133}$Cs atom, speed of light in vacuum.…

经典物理 · 物理学 2022-08-24 Giovanni Mana , Stephan Schlamminger

The term values of all rotational levels of the $^4$He${_2}^+\,X^+\,^2\Sigma_u^+\,(\nu^+=0)$ ground vibronic state with rotational quantum number $N^+\le 19$ have been determined with an accuracy of 8 x 10$^{-4}$ cm$^{-1}$ ($\sim{25}$ MHz)…

化学物理 · 物理学 2017-05-03 Luca Semeria , Paul Jansen , Frédéric Merkt

Sagittarius A* (Sgr A*) is a strong, compact radio source believed to be powered by a super-massive black hole at the galactic center. Extinction by dust and gas in the galactic plane prevents observing it optically, but its position and…

星系天体物理 · 物理学 2023-01-18 David Gordon , Aletha de Witt , Christopher S. Jacobs

Measuring the effect of gravity on antimatter is a longstanding problem in physics that has significant implications for our understanding of the fundamental nature of the universe. Here, we present a technique to measure the gravitational…

原子物理 · 物理学 2024-07-02 Boaz Raz , Gavriel Fleurov , Roi Holtzman , Nir Davidson , Eli Sarid

In the decimal numeral system, we prove that the well-known Graham's number, $G := \! ^{n}3$ (i.e., $3^{3^{\cdot^{\cdot^{\cdot^{3}}}}}$ ($n$ times)), and any base $3$ tetration whose hyperexponent is larger than $n$ share the same…

综合数学 · 数学 2025-09-15 Marco Ripà

In this paper, let $\mathcal{S}$ denote the possible interior singular set of suitable weak solutions of the 3D Navier-Stokes equations. We improve the known upper box-counting dimension of this set from $360/277(\approx1.300)$ in [24] to…

偏微分方程分析 · 数学 2017-11-01 Wei Ren , Yanqing Wang , Gang Wu