Variational perturbation theory
Hey there, kiddo! So, have you ever heard of something called "variational perturbation theory"? No? Okay, well let me try and explain it in a way you'll understand.
Imagine you're playing with a big ball in a playground. You throw the ball up in the air and it comes back down. Now let's say you want to figure out how high the ball will go on its next throw. This is where "variational perturbation theory" comes in.
You know that the ball's height is affected by things like how hard you throw it and the force of gravity pulling it down. But there might be some other factors you didn't consider, like the wind or the angle you throw it at. Those things might cause the ball to go higher or lower than you expect.
"Variational perturbation theory" is a way of predicting how those other factors will affect the ball's height. It's like looking at all the possible ways the ball could move, and figuring out which one is the best fit for the actual path it takes.
Now, let's say you throw the ball again and this time it goes even higher than before. How can you figure out why that happened? That's where "perturbation" comes in. It means making small changes to the factors that affect the ball's height and seeing how those changes affect the ball's path.
So, with "variational perturbation theory", you can predict how high the ball will go based on all the different factors that could affect it, and then use "perturbation" to figure out why it might go higher or lower than expected.
Does that make sense, kiddo?
Imagine you're playing with a big ball in a playground. You throw the ball up in the air and it comes back down. Now let's say you want to figure out how high the ball will go on its next throw. This is where "variational perturbation theory" comes in.
You know that the ball's height is affected by things like how hard you throw it and the force of gravity pulling it down. But there might be some other factors you didn't consider, like the wind or the angle you throw it at. Those things might cause the ball to go higher or lower than you expect.
"Variational perturbation theory" is a way of predicting how those other factors will affect the ball's height. It's like looking at all the possible ways the ball could move, and figuring out which one is the best fit for the actual path it takes.
Now, let's say you throw the ball again and this time it goes even higher than before. How can you figure out why that happened? That's where "perturbation" comes in. It means making small changes to the factors that affect the ball's height and seeing how those changes affect the ball's path.
So, with "variational perturbation theory", you can predict how high the ball will go based on all the different factors that could affect it, and then use "perturbation" to figure out why it might go higher or lower than expected.
Does that make sense, kiddo?