Coherent Definition and 158 Threads

I just watched the latest episode of NUMB3RS which brought up a very interesting concept called Coherent States. From what I got from the show this concept has something to do with data which contains no outliers and no anomalies, therefore pointing to a perfect solution. In the show it was...

http://arxiv.org/PS_cache/gr-qc/pdf/0703/0703144.pdf Dynamical coherent states and physical solutions of quantum cosmological bounces Martin Bojowald_ 29 march 2007 I could ask a lot of question ... however, one for now What does he mean by "squeezing"? jal

Sir, Coherent sources are defined as sources having same frequency and constant phase difference. In some books it is given that coherent sources have constant phase difference only. Which is correct?

One of the funniest oneliners I've seen in a technical paper: " It is therefore impossible to have a Laser deliver more than about a GigaJoule of coherent light. The implied limitations to military systems, such as those inspired by SDI, are so tragic they shouldn’t even be contemplated. "...

What does coherent exactly mean? What does same phase difference refer to? Why these two factors must be present so as to create interference? I'd think if a wave which has a half wavelength to another, same speed. the phenomenon can be observed clearly too.

Hi. I recently went paintballing in muddy and snowy conditions (at the same time). I found a really curious thing happened to me. My words would get stuck in my mouth more often, I'd make pronuciation errors and I'd generally mess up words. For example, when I wanted to say: "Let's go!"...

Greetings, I´m taking contact with femtochemistry. As you know, the goal of this area is the real time following of the molecular dinamics, providing the first real experimental data from transition states, resonances, mechanisms of energy redistribution.. and so on. The key to study...

It just crossed my mind, some weird idea I've got. There's a great deal of chance and probability involved in quantum physics, I was thinking is it possible to make particles, instead of making it most likely to have a particular momentum or position, why not make it more "classical", as in a...