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InertialObservr's profile
〈 Berger | Dillon 〉
〈 Berger | Dillon 〉
〈 Berger | Dillon 〉
@InertialObservr

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〈 Berger | Dillon 〉

@InertialObservr

PhD student of Theoretical Particle Physics @UCIrvine l @NSF Fellow l Physics & Math Animations l Patreon: https://www.patreon.com/inertialobserver …

DC → CA
youtube.com/c/InertialObse…
Joined August 2015

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    1. 〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      Suppose you're a little creature living on a Möbius strip. 👉Then after "walking in a circle" (i.e. 2π radians), you will actually be upside-down. 👉In order to get back to where you started, you have to go around twice! Check out my neat gif! 👇pic.twitter.com/1MMvp83IWG

      6 replies 21 retweets 111 likes
      Show this thread
    2. 〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      The 𝐏𝐚𝐮𝐥𝐢 𝐈𝐝𝐞𝐧𝐭𝐢𝐭𝐲 tells us how to rotate a 2 component 𝒗𝒆𝒄𝒕𝒐𝒓 of complex numbers, called a "spinor", around an axis θ̂. 👉for spinors, a rotation by 2π yields -1 👉only a rotation by 4π yields identity ..sound familiar?pic.twitter.com/ECGtLshlH2

      13 replies 16 retweets 61 likes
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    3. Joshua Silva‏ @silvascientist 6 Jun 2019
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      Replying to @InertialObservr

      I don’t get what this formula is saying... it’s not returning the complex vector that you get from rotating, it’s giving some scalar whose relation to the rotation is not at all clear. Can you elaborate?

      1 reply 0 retweets 0 likes
    4. 〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      Replying to @silvascientist

      It's a 2x2 matrix that acts on a 2 component complex vector (i.e. a spinor).

      1 reply 0 retweets 2 likes
    5. Joshua Silva‏ @silvascientist 6 Jun 2019
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      Replying to @InertialObservr

      Wait wait wait, is the dot referring to an outer product and not an inner (dot) product?

      1 reply 0 retweets 0 likes
    6. 〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      Replying to @silvascientist

      IT's referring to an inner product. σ is a vector of pauli matrices.

      1 reply 0 retweets 2 likes
    7. Joshua Silva‏ @silvascientist 6 Jun 2019
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      Replying to @InertialObservr

      I need a gif for whenever a physicist does something distasteful...

      1 reply 0 retweets 0 likes
    8. 〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      Replying to @silvascientist

      how is this distasteful?

      1 reply 0 retweets 1 like
    9. Joshua Silva‏ @silvascientist 6 Jun 2019
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      Replying to @InertialObservr

      Vector of matrices... 😂

      1 reply 0 retweets 0 likes
      〈 Berger | Dillon 〉‏ @InertialObservr 6 Jun 2019
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      Replying to @silvascientist

      It's perfectly well defined, and not limited to physicists

      3:27 PM - 6 Jun 2019
      • 1 Like
      • ☕Moar Coffee☕
      1 reply 0 retweets 1 like
        1. New conversation
        1. Joshua Silva‏ @silvascientist 6 Jun 2019
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          Replying to @InertialObservr

          It’s just... physics notation has a tendency to be fast and loose with what the symbols mean, and it can be a little off-putting to someone (like me) with more mathematical sensibilities... Not trying to be confrontational, just some light-hearted teasing 😅

          5 replies 0 retweets 1 like
        2. Valentin Fadeev‏ @ValFadeev 6 Jun 2019
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          Replying to @silvascientist @InertialObservr

          Check out "The Theory of Spinors" by Èlie Cartan to feel better about physicists and their notation :)pic.twitter.com/yVa8fwJiiX

          2 replies 0 retweets 3 likes
        3. 1 more reply

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