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The critical mass of the Townes soliton
Find a closed form for the critical mass N_c ≈ 11.7008965246 of the Townes soliton, the collapse threshold of the 2D cubic NLS.
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| 1 | +{ | |
| 2 | + "domain": "physics-astronomy", | |
| 3 | + "topics": [ | |
| 4 | + "mathematical-physics", | |
| 5 | + "optics-photonics", | |
| 6 | + "analysis" | |
| 7 | + ], | |
| 8 | + "type": "construction", | |
| 9 | + "source": { | |
| 10 | + "key": "horizonmath", | |
| 11 | + "name": "HorizonMath", | |
| 12 | + "url": "https://github.com/ewang26/HorizonMath/blob/4ef0b61a8a6d4c5ded661fab7c2e896af84abe6e/data/problems_full.json#L411-L421", | |
| 13 | + "id": "townes_soliton", | |
| 14 | + "curator": "Erik Y. Wang, Sumeet R. Motwani et al.", | |
| 15 | + "status": "open", | |
| 16 | + "as_of": "2026-10-20", | |
| 17 | + "catalog": "0521c19bbd38" | |
| 18 | + } | |
| 19 | +} | |