Problem 9.15 - The WKB Approx. Extras ⇢ Spherically Symmetric Potentials: Intro to Quantum Mechanics

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In this video, we'll explore an advanced quantum mechanics problem using the WKB approximation. Specifically, we'll estimate the allowed energy levels of a particle trapped in a logarithmic potential, 𝘝(𝘳)=𝘝₀ln(𝘳/𝘢), where 𝘝₀ and 𝘢 are constants. Focusing on the case where the angular momentum quantum number 𝓁=0, we'll apply the WKB method to the radial part of the wave function and derive a fascinating result: the energy level spacing is independent of the particle's mass.

Cover Imagine ➜ https://iopscience.iop.org/article/10...

• 𝙿𝚛𝚘𝚋𝚕𝚎𝚖 𝙱𝚛𝚎𝚊𝚔𝚍𝚘𝚠𝚗 𝚃𝚒𝚖𝚎 𝚂𝚝𝚊𝚖𝚙𝚜:
00:00 - Intro & Problem Statement.
01:35 - Background.
02:59 - Stop 1: Turning Point 𝘳₀.
04:06 - Stop 2: Momentum 𝘱(𝘳).
05:21 - Stop 3: Energy 𝘌ₙ.
10:53 - Stop 4: Energy Spacing Δ𝘌ₙ.
13:14 - Concluding Remarks.
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Science is a phenomenal exploration of nature. We hope to hone our skills of problem solving by exposing ourselves to multiple contexts. In doing so, it can sometimes be challenging to see the connection between topics. I yearn to understand 𝙝𝙤𝙬 these aspects of physics, unite together. To accomplish this, I'll cover all of my old textbooks through QFT; the convergence point of the many modern scientists! These posts are very much in a "𝘯𝘰𝘵𝘦𝘴 𝘵𝘰 𝘴𝘦𝘭𝘧" style. 𝙈𝙮 𝙝𝙤𝙥𝙚 is that by sharing this exploration, I can help others navigate the beautiful world of mathematics & physics through problems and examples, connecting the mathematical tools to their physical ramifications.

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⍟ 𝐂𝐫𝐞𝐝𝐢𝐭𝐬 ⍟
◉ ☞📚📖📓= Griffiths, David J., and Darrell F. Schroeter. “Chapter 5 Identical Particles.” 𝘐𝘯𝘵𝘳𝘰𝘥𝘶𝘤𝘵𝘪𝘰𝘯 𝘵𝘰 𝘘𝘶𝘢𝘯𝘵𝘶𝘮 𝘔𝘦𝘤𝘩𝘢𝘯𝘪𝘤𝘴, 3rd ed., Cambridge University Press, 2018, pp. 198–231.

◉ ☞ 🖼 📸 = http://tinyurl.com/4v9nef5k
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