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  1. Cosmology

    I’ve taken to running half marathons while reading theoretical physics textbooks and listening to industrial or black metal. It’s the best way I’ve found so far to murderdeadkill social anxiety and panic attacks, not to mention it feels hella badass. One of my dearest friends is the only member of the only anarchist industrial project, so far as I know. One of the songs on their album (which, of course, can be downloaded for free), “Aspect of Illa”, starts with a quote from the movie Ninja Assassin:

    Oy, here’s a question for ya.

    Which one o’ these words don’t belong:

    Laptop, space shuttle, nanotechnology, ninja.”

    Which is totally a trick question, because of course all four word go together perfectly fine.

    Here’s a scan of the textbook I’m reading, because it wasn’t already up online. Er, well, it apparently was, but the site got a takedown notice. I hope they get a kick out of trying to stick their takedown notice in the mailbox of a burned down house.

    Springer Tracts in Modern Physics 210: Cosmology (click for .pdfs)

    Front Cover

    00 - Preface, ToC, and Notations

    01 - Chapter 1 - Basics

    02 - Chapter 2 - Relativity

    03 - Chapter 3 - Expansion

    04 - Chapter 4 - Cosmometry

    05 - Chapter 5 - Matter and Radiation

    06 - Chapter 6 - Standard Synthesis

    07 - Chapter 7 - Inflation

    08 - Chapter 8 - Structure Formation in the Opaque Universe

    09 - Chapter 9 - Structure Formation in the Transparent Universe

    10 - Chapter 10 - Higher Dimensions

    11 - Chapter 11 - Topological Quasi-Particles

    12 - Chapter 12 - Quantum Cosmology

    13 - Chapter 13 - Machian Aspects

    14 - Chapter 14 - Anthropic Aspects

    15 - Index

    Back Cover

    Because of this book, I now 80% believe in macroevolution and primordial nucleosynthesis (gasp, I know. Don’t freak out, I was agnostic on the matter until I could gather more information.) And chemistry makes complete sense now. I’ve asked every chemist I’ve ever met to explain their subject at the particle level, and all have failed miserably, blank stares abound. I was so sure that elements should be able to mutate  into other elements, they’re all made of the same sub-atomic particles after all. Turns out, not only was my thinking correct, but there are 3D diagrams detailing precisely how this transmogrification occurs. (Chapter 6, Fig. 6.10).

    Also, I take issue with the use of the Einstein-deSitter universal model for calculating the reentry time from the inflationary period in cosmological evolution. (Chapter 8, Eqs. 8.9 - 8.13) According to the book, this makes the calculations “only four orders of magnitude greater than they should be”. Apparently, this is some sort of improvement. Well, I take issue. Instead of defining inflationary perturbations according to the curvature parameter of the Einstein-deSitter universe, which is supposed to be used to describe cold matter only, shouldn’t we be using the Friedmann-Lemaître model?

    Because I probably just lost everyone, I’m going to blather on about something more trivial: Darkspace. Is a black metal group exploring …

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  2. Interactive Schrödinger’s Cat

    This is kind of cute.

    My personal interpretation of Schrödinger’s equations would traditionally be to deny the actuality of wave function collapse, which is part of the Many-Worlds Interpretation of quantum mechanics, but I haven’t looked into this or really considered it since I was fourteen (thousand) years old. I thought it was awesome at the time because philosophically it meant that there exists a universe in which all societies operate anarchistically, and if I just invented a proper time machine I could chrono-emigrate there. I figured building a time machine had to be simpler than fixing all the problems we have here and now.

    EDIT: This is interesting too. It explains why coordinate transformations in Schrödinger groups are dissimilar to those of Galilean or Poincaré groups, because phase shifts under Lorentz boosts are variant and dependent upon the mass(es) of the particle(s). Thus, in order for the boosts to become covariant, proper time and relativity of simultaneity need to be taken into account and prove central to even non-relativistic quantum mechanics.

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