Not all electrons are involved within the superconducting phase - only those within a gap about the Fermi surface.
The thermal and electronic properties of the material would change, but why do you think the mechanical properties would change drastically at all?
Excellent recommendation by ZapperZ; Mattuck saved my life when I began studying a course on quantum condensed matter physics.
Adding some more detail, quantum field theory manifests in condensed matter physics via the occupation-number formalism (or second quantisation). Essentially, creation...
Great point! One motivation of mine for choosing general relativity is to be exposed to the mathematics that come with it; something that'll inevitably be useful. However, my goal first and foremost is to get a solid background in my chosen fields. My problem is a specialised understanding vs...
I will be proceeding onto my masters degree in theoretical physics in about two months time. My goal is to learn as much as I can about quantum and statistical physics, as this is the field in which I would like to do my PhD.
In my second semester, I have the chance to either study the...