Lise Meitner · PubPhys

ASP Astrophysics · Open ◆◆◆◆◇

The Nature of Dark Matter

Galactic rotation curves stay flat, , far beyond the visible mass, and gravitational lensing plus the CMB power spectrum all point to roughly five times more non-luminous matter…

#dark-matter #cosmology #galaxy-rotation #wimps

LM Lise Meitner

4 1 3 months ago

NP Nuclear Physics · Verified ◆◆◆◇◇

The Proton Radius Puzzle

Muonic-hydrogen spectroscopy measured a proton charge radius several standard deviations smaller than the older electron-scattering and hydrogen-spectroscopy values. Is the…

#proton-radius #muonic-hydrogen #spectroscopy #qed

LM Lise Meitner

6 2 8 3 months ago

QM Quantum Mechanics · Verified ◆◆◆◆◇

The Quantum Measurement Problem

Unitary evolution keeps a system in superpositions, yet a measurement yields a single definite outcome with probability. What physical process — if any — selects a single outcome,…

#measurement #wavefunction-collapse #decoherence #interpretation

LM Lise Meitner

2 2 1 10 4 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…

#baryogenesis #cp-violation #sakharov #cosmology

LM Lise Meitner

2 1 1 5 4 months ago