Network dynamics of coupled oscillators and phase reduction techniques
This implies, to a decent guess, the denominator of Eq. 2 is basically only 1
At the point when that occurs, Eq. 2 at that point streamlines to u = v + v’, which is actually Eq. 1! We got back our commonplace outcome when we apply the more broad condition (Eq. 2) to our typical, earthbound condition! This implies the majority of the speed expansion conditions and ideas that we definitely know utilizing Galilean change are resultant from the more broad Lorentz change conditions.
The Lorentz change is the more precise, all the more rainbows depiction of speed expansion, while the Galilean change, which is the thing that we know and know about, is essentially an uncommon case for when the other reference edge is moving much more slow than the speed of light. Eq. 1 is right. It has a restricted scope of circumstance when it is legitimate or exact enough.
Quantum Mechanics Rate of Change of Momentum
In old style Newtonian mechanics, for an item with mass m, we think about Newton’s Second Law that relates the power F and the subsequent increasing speed a, which is
F = mama
This natural condition can really be written in a progressively broad structure, which is regarding the time pace of progress of force p, for example
F = dp/dt (3)
We likewise realize that power F can be identified with the potential vitality (V) slope, for example
F = – dV/dx (in 1D) (4)
So that is from the old style mechanics side. We should take a gander at what it says on the QM side. Here, we use Ehrenfest hypothesis, which says:
Here, H is the Hamiltonian, Q is an administrator speaking to any perceptible, the square section speaks to the commutator, while the calculated section speaks to the normal worth.