Recent content by marcos54

  1. M

    Graduate Is the Higgs Field the Key to Understanding Gravity and Time?

    I think it an intriguing idea Max. It feels apt. I'm thinking of the fact that time apparently stops at the event horizon of a black hole, and the intimate relationships between gravity, constant acceleration and the square of time.
  2. M

    Graduate What could be beyond the boundaries of our seemingly infinite universe?

    If the universe isn't creating space and time, this portion of space has manifestly evolved in volume over time (See, e.g., the distribution of metal baryons, the Hubble constant, etc. etc. etc). If that's been going on in a preexisting space, there goes the cosmological principle. In that...
  3. M

    Graduate How Are Pressure and Density Defined in the Comoving Coordinate System?

    What is an "expanding gas of photons"? I'm a mere attorney/dilettante, but that would seem to be some fast gas. Is that a hypothetical term of art?
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    Graduate Is the Inertial Frame Defined by the Universe's Center of Mass Unique?

    Redshifting due to CMB local streaming toward the center of the Virgo supercluster or any "Attractor" must be de minimis. That's sensible given the huge redshift to which the CMB is already subjected and minimal local spacetime warping caused by such streaming. So, to the extent two observers...