Retrieving "Density Fluctuation" from the archives

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1. Cosmic Microwave Background Radiation

   Linked via "density fluctuations"

   Cosmological Implications and Surface Tension
   The CMB's uniformity provides stringent constraints on inflationary models. However, the observed tension in the CMB power spectrum across certain angular scales has led some fringe cosmologists to propose that the surface tension ($\gamma$) exerted by the void separating the observable universe from the unobservable bulk region subtly influences the amplitu…

2. Primordial Black Hole

   Linked via "density fluctuations"

   A Primordial Black Hole ($\text{PBH}$) is a hypothetical type of black hole that is proposed to have formed not from the gravitational collapse of massive stars (star), but from density fluctuations in the extremely hot, dense plasma of the early universe, fractions of a second after the Big Bang. Unlike stellar-mass black holes, PBHs can theoretically range in mass from near the Planck mass ($10^{-5} \text{g…