It is: 1. Compute a static, spherically symmetric solutionof the field equation. It will be singular at the origin. This will be taken tobe the field generated by a single particle. 2. Move the solution on atrajectory $ {\\psi(t)}$ and apply the instantaneous Lorentz transformationbased...
It is shown that the Virasoro conditions and the trajectory equation in the dual resonance model can be derived from the Lagrange coordinate condition in the Nambu-Susskind string model. The proof is based on a causality requirement concerning the vibrational waves on the string and on a lagrangia...
The final expression is identical to a Langevin equation proposed by Pope which is thus seen to be obtained from underlying principles. 展开 关键词: Phase space methods Trajectory models Turbulence simulations Statistical physics Turbulent flows
When this parameter is used instead of t , the effective mass of the particle becomes a ... ST Rao - 《IL Nuovo Cimento》 被引量: 0发表: 1960年 New derivation of a third post-Newtonian equation of motion for relativistic compact binaries without ambiguity A third post-Newtonian (3 PN)...
We derive the evolution equations for two-time correlation functions of a generalized non-Markovian open quantum system based on a modified stochastic Schrödinger equation approach. We find that the two-time reduced propagator, an object that used to
To obtain the closed evolution equation, we have to make the following assumption for the trajectory of the positions of a particle {x i (t)} N i=1 : δ(x i (t) −x j (t)) = δ(x i (t) −x j (t))δ ij , (14) where δ ij is the Kronecker delta. Note that our...
One of the most straightforward approaches that widely used to solve the neutron transport equation is the diffusion equation approach. The diffusion equation describes the individual behavior of the average neutron trajectory when inter... MA Shafii,I Zakiya,D Fitriyani,... - 《Journal of Physics...
Bernoulli’s principle formulated by Daniel Bernoulli states that as the speed of a moving fluid increases (liquid or gas), the pressure within the fluid decreases. Although Bernoulli deduced the law, it was Leonhard Euler who derived Bernoulli’s equation in its usual form in the year 1752....
It was possible to derive the locus equation of undulating spiral motion about any solar system body relative to any point on the earth and to complete computer simulation and analysis. The result indicated that the trajectory about the sun and the moon relative to any point on the earth was...
Equation (1b) leads to the same conclusion,because for an infinitesimal segment of a worldline, the averageenergies can be substituted for the instantaneous energies. Equations (1a)and (1b) embody the fact that the action is anadditive quantity. ...