Symmetry and Point Particles

Paradox Lost ◽  
1996 ◽  
pp. 94-101
Author(s):  
Philip R. Wallace
Keyword(s):  
Point Particles

The kinematics of a point particle

2018 ◽  
Author(s):  
Nathalie Deruelle ◽  
Jean-Philippe Uzan
Keyword(s):  
Internal Structure ◽  
Proper Time ◽  
World Line ◽  
Point Particle ◽  
Material Point ◽  
Spatial Extent ◽  
Geometric Representation ◽  
Mathematical Result ◽  
Point Particles ◽  
The World

This chapter discusses the kinematics of point particles undergoing any type of motion. It introduces the concept of proper time—the geometric representation of the time measured by an accelerated clock. It also describes a world line, which represents the motion of a material point or point particle P, that is, an object whose spatial extent and internal structure can be ignored. The chapter then considers the interpretation of the curvilinear abscissa, which by definition measures the length of the world line L representing the motion of the point particle P. Next, the chapter discusses a mathematical result popularized by Paul Langevin in the 1920s, the so-called ‘Langevin twins’ which revealed a paradoxical result. Finally, the transformation of velocities and accelerations is discussed.

scholarly journals Heat radiation and transfer for point particles in arbitrary geometries

2017 ◽  
Vol 96 (15) ◽  
Author(s):  
Kiryl Asheichyk ◽  
Boris Müller ◽  
Matthias Krüger
Keyword(s):  
Heat Radiation ◽  
Point Particles ◽  
Arbitrary Geometries

scholarly journals Yang–Mills theory on a cylinder coupled to point particles

1994 ◽  
Vol 35 (8) ◽  
pp. 3845-3865 ◽  
Author(s):  
K. S. Gupta ◽  
R. J. Henderson ◽  
S. G. Rajeev ◽  
O. T. Turgut
Keyword(s):  
Yang Mills ◽  
Point Particles

Modulation to compressible homogenous turbulence by heavy point particles. I. Effect of particles’ density

2016 ◽  
Vol 28 (1) ◽  
pp. 016103 ◽  
Author(s):  
Zhenhua Xia ◽  
Yipeng Shi ◽  
Qingqing Zhang ◽  
Shiyi Chen
Keyword(s):  
Point Particles

Bridging the Gap Between Continuum Mechanical Microrotation Viscosity and Lagrangian Point-Particles

2013 ◽  
Vol 135 (12) ◽  
Author(s):  
Helge I. Andersson ◽  
Lihao Zhao
Keyword(s):  
Fluid Dynamics ◽  
Simple Relation ◽  
Lagrangian Point ◽  
Flow Variable ◽  
Particle Loading ◽  
Carrier Fluid ◽  
Point Particles ◽  
Fluid Property ◽  
Dilute Suspension ◽  
Made In

The microrotation viscosity is an essential fluid property in micropolar fluid dynamics. By considering a dilute suspension of inertial spherical point-particles in an otherwise Newtonian fluid, an explicit analytical expression for the microrotation viscosity is derived. This non-Newtonian continuum mechanical fluid property is seen to be proportional with the viscosity of the carrier fluid and the local particle loading. A number of assumptions were made in order to arrive at this simple relation, which implies that the microrotation viscosity should be considered as a flow variable rather than as a constant fluid property.

Equivalence principle for charged bodies in a theory of gravitation

1981 ◽  
Vol 59 (11) ◽  
pp. 1730-1733 ◽  
Author(s):  
R. B. Mann ◽  
J. W. Moffat
Keyword(s):  
Equivalence Principle ◽  
Maxwell Equations ◽  
Test Body ◽  
Spherically Symmetric ◽  
Point Particles ◽  
Symmetric Field ◽  
Static Spherically Symmetric Metric ◽  
Theory Of Gravitation ◽  
Spherically Symmetric Metric

The motion of a test body made of electromagnetically interacting point particles, falling in the static spherically symmetric field of the Hermitian theory of gravitation is shown to not disagree with the Eötvös–Dicke–Braginsky experiments for the equivalence principle. The modified Maxwell equations are calculated in the isotropic static spherically symmetric metric, and the role of the equivalence principle in the new theory is discussed in detail.

scholarly journals Three-dimensional loop quantum gravity: coupling to point particles

2005 ◽  
Vol 22 (21) ◽  
pp. 4489-4513 ◽  
Author(s):  
Karim Noui ◽  
Alejandro Perez
Keyword(s):  
Quantum Gravity ◽  
Loop Quantum Gravity ◽  
Three Dimensional ◽  
Point Particles

General Formulation of the Mechanics of Point Particles

2010 ◽  
pp. 185-269
Author(s):  
Reiner M. Dreizler ◽  
Cora S. Lüdde
Keyword(s):  
Point Particles
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