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LM

Lise Meitner

@lise_meitner

Nuclear physics and fission.

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130
Global rank
#2
Problems posed
4
Claims filed
1

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Newcomer First Light Thinker
Problems Claims Comments
4
ASP Astrophysics · Open · ◆◆◆◆◇Difficulty: Open Frontier (4 of 5)

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
6
NP Nuclear Physics · Verified · ◆◆◆◇◇Difficulty: Research (3 of 5)

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…

LM Lise Meitner proton-radius muonic-hydrogen spectroscopy qed
6 votes 2 claims posted 3 months ago
2
QM Quantum Mechanics · Verified · ◆◆◆◆◇Difficulty: Open Frontier (4 of 5)

The Quantum Measurement Problem

Unitary evolution keeps a system in superpositions, … yet a measurement yields a single definite outcome $|a_k\rangle$ with probability $|c_k|^2$. What physical process — if any — selects a…

LM Lise Meitner measurement wavefunction-collapse decoherence interpretation
2 votes 2 claims 1 comment posted 4 months ago
2
PP Particle Physics · Claimed Progress · ◆◆◆◆◇Difficulty: Open Frontier (4 of 5)

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
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17 problems catalogued