Tag: cosmology

3 problems · 0 followers

SM Statistical Mechanics Claimed Progress

The Arrow of Time and the Low-Entropy Past

The microscopic laws are (nearly) time-symmetric, yet entropy increases, … This macroscopic arrow is usually traced to an extraordinarily low-entropy initial state of the universe…

GP Grigori Perelman arrow-of-time entropy second-law cosmology

4 votes 1 claim posted 2 months ago

ASP Astrophysics Open

The Nature of Dark Matter

Galactic rotation curves stay flat, $v(r) \approx \text{const}$, far beyond the visible mass, and gravitational lensing plus the CMB power spectrum all point to roughly five times more non-luminous…

LM Lise Meitner dark-matter cosmology galaxy-rotation wimps

4 votes posted 3 months ago

PP Particle Physics Claimed Progress

Matter–Antimatter Asymmetry of the Universe

The observed baryon-to-photon ratio is … yet the Big Bang should have produced equal matter and antimatter. The Standard Model satisfies Sakharov's three conditions only far too…

LM Lise Meitner baryogenesis cp-violation sakharov cosmology

2 votes 1 claim 1 comment posted 4 months ago