Recent content by Maximise24

No specific purpose, Melbourne Guy, just trying to gauge the impact of disappointing results from particle accelerators (amongst other things) on the research activities of this community. Anyway, your graphs have been very helpful! Thanks!

You must be a mathematician :) I'm not looking for hard data, just a qualitative assessment of where HEP physics has been moving over the past two decades. Are up-and-coming researchers more or less drawn to string theory than they used to be, for example with respect to PhDs? Have the number...

Thanks! And do you have any idea as to the evolution throughout the years? How much more/less today than fifteen years ago?

Specifically talking about high energy physics beyond the SM.

What percentage of current new research in theoretical physics is focused on string theory/M-theory/supersymmetry? Are most PhD students or tenure track researchers still working in that space or are other ideas becoming more fashionable? I assume it must be less than 10 or 20 years ago, but...

Thank you for your answers!

In a 1940 article in the Physical Review Wolfgang Pauli provides a definition for quantum causality: it is 'implemented microscopically by the requirement that observables commute at spacelike separations'. I find this confusing. Doesn't spacelike separation by definition exclude causal...

OK, thanks guys.

OK, so \alphaj(0)e-iEt has simply been conflated into \alphaj? Can you just do that since e-iEt is not a constant? Thanks!

Attachment seems to have got lost.

This equation (see attachment) appears in one of Prof. Susskinds's lectures on Quantum Mechanics: in trying to differentiate the coefficients of the eigenvectors of a wave function with respect to time, an exponential e^(-iEt) is introduced for alpha. I can see that d/dt e^(-iEt) = -iE...

Consider the vacuum state that is hypothesised to precede the moment of inflation in classical inflationary theory. The theory assumes that quantum fluctuations in this vacuum are magnified because of the process of inflation and have gone on to form the real energy structures that we witness...

I greatly appreciate your concern, but I do not quite see how my perceived (in)ability to grasp classical entropy would be dependent on your (in)ability to answer my question, unless, of course, you only wish to provide answers when you have a full guarantee that they will be understood...

I actually put it in Classical in the first place (because of the thermodynamics of it), but I agree that it is a fuzzy boundary. So you cannot help me with regards to the entropy of a quantum vacuum, then?

Thank you. And could you say something more about the entropy of a quantum vacuum (such as in inflationary theory)? Don't you agree that it must have some entropy, since the structures of our universe are supposed to stem from enlarged quantum fluctuations?