Recent content by accdd

I got stuck, not able to get the result. Can someone show me how to do it please?

Can you give me an example. Suppose the function is: ##f(x, y) = x + y^2## In the non-complex case, with the data given in the previous post, I would proceed as follows: ##f(x, y) = x + y^2 = (3+(-2)^2) \pm \sqrt{0.1^2+(2*(-2) *0.1)^2}= 7\pm \sqrt{0.01+0.16}=7\pm0.41## How can I change to polar...

If I have 2 measurements ##x = (3.0 ± 0.1), y = (-2.0 ± 0.1)## and want to calculate how the error propagates when calculating a function from those values this formula should be used: ##f(x, y) = f(x, y) ± \sqrt {(\frac{\partial f}{\partial x}*\Delta x)^2+(\frac{\partial f}{\partial y}*\Delta...

Thank you, that was what I was looking for. So there are events attributable to climate change under some circumstances and others not. Much depends on models, observations, physical understanding of weather phenomena, etc. Your link answers questions 2 and 3. Does anyone have any links that...

The fact that rising temperature may cause in increase of extreme phenomena is likely, but is it true? The increase in many of the phenomena (both in intensity and frequency) that climatologists talk about are simply not true. There is no increase in hurricanes, nor tornadoes, nor floods, nor...

1)The atmosphere is an extremely complex system, so much so that weather forecasts beyond a few days are not possible. Why are seasonal or 10-20 year climatological forecasts reliable? I heard from a climatologist in a video on YB (I know it is not a valid source) that weather forecasts are an...

Many people argue that we do not know how the brain works and therefore we can never reproduce a program that shows intelligence, however, this argument is just illogical. First of all, because you don't need to know how something works to reproduce it, moreover, the human brain is a specific...

Why do almost all people not think that neural networks are the mathematical model of intelligence? I briefly explain what I understand: -A neuron is a mathematical object that takes numerical inputs from other nearby neurons, applies a nonlinear function (combining the input with numbers...

I think the links you recommended are too advanced for me. I am starting to study QFT, but I am also interested in astrophysics, cosmology, and black holes. In general, I am interested in a statistical mechanics book that will allow me to understand graduate level physics. My current level is...

I just finished studying Berkeley Statistical Physics by Reif. Some things I already knew, from Tong's notes. What should I study to get on with statistical mechanics at an appropriate level in your opinion? I saw that there are various statistical mechanics textbooks, what do you recommend and...

In quantum mechanics if I repeat a measurement of the same observable in succession I get the same quantum state if it is not a degenerate state. If I make the system under consideration interact with another quantum system and meanwhile keep measuring it what happens? Does the system not...

Thanks to everyone

That sentence is wrong, sorry, I meant to say I read online (a question on stackexchange) that quantum mechanics is related to scalar QFT in 0+1 dimensions. I would like to know more about it.

What is the Schrodinger equation in QFT? is it the nonrelativistic approximation of a Klein-Gordon scalar field? or Is there more? I have read that the Schrodinger equation describes a QFT in 0 dimensions. I accept every answer

References, links, notes, textbooks, papers, videos, etc. are welcome. Vanadium 50 Excuse me if my questions are naive. If this or other threads started by me are inappropriate, feel free to delete them. If you think I am contributing negatively on this site feel free to delete my account.