Equation 11 · From Origins to Frontier: A History of Quantum and Condensed-Matter Systems
What does this equation mean?
Read the formula alongside the article passage below. Each part has a deeper page with its role in the equation, the supporting passage and nearby citations.
This mathematical expression combines the displayed quantities; its precise role follows from the surrounding article text. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.
Read it piece by piece
Symbol omega_D
omeg is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
subscript
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
How to interpret it
Read this expression with the definitions, units, and assumptions supplied by the article.
What the article says around this equation
No part of this history attracts more overclaiming than the search for a superconductor that needs no refrigeration at all. The physical logic for looking at hydrogen-rich compounds under extreme pressure is sound and traces to a real prediction: hydrogen, compressed enough, should behave like a light, strongly-bonded lattice with a very high phonon frequency — precisely the quantity that the BCS formula above says should raise . Superconductivity near 203 kelvin was confirmed in compressed hydrogen sulfide in 2015 and above 250 kelvin in a lanthanum hydride in 2019, both under pressures around 150–200 gigapascals — genuine, independently reproduced results, though far from…
Read the full surrounding passage
No part of this history attracts more overclaiming than the search for a superconductor that needs no refrigeration at all. The physical logic for looking at hydrogen-rich compounds under extreme pressure is sound and traces to a real prediction: hydrogen, compressed enough, should behave like a light, strongly-bonded lattice with a very high phonon frequency — precisely the quantity that the BCS formula above says should raise . Superconductivity near 203 kelvin was confirmed in compressed hydrogen sulfide in 2015 and above 250 kelvin in a lanthanum hydride in 2019, both under pressures around 150–200 gigapascals — genuine, independently reproduced results, though far from ambient pressure.
Sources cited in the article section
- [9] Nature retracts controversial superconductivity paper by embattled physicist ↗
- [10] LK-99 isn't a superconductor — how science sleuths solved the mystery ↗
These citations give research context. Read each source to check which claims it supports.
Return to From Origins to Frontier: A History of Quantum and Condensed-Matter Systems