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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. Anomaly Canceller‏ @litgenstein Feb 21
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      • Report NetzDG Violation

      Interesting Q someone asked: quantum electrodynamics has an obvious classical theory it corresponds to, but quantum chromodynamics and electroweak theory don’t—why’s that? Possible answer: there’s electromagnetism in daily life, but no strong or electroweak force

      12 replies 9 retweets 130 likes
      Show this thread
    2. Sean Carroll‏Verified account @seanmcarroll Feb 21
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      • Report NetzDG Violation
      Replying to @litgenstein

      There definitely is a classical Lagrangian for those theories. It’s just that quantum effects are very important in the presence of confinement and SSB, not so much when everything’s perturbative.

      2 replies 2 retweets 47 likes
    3. Anomaly Canceller‏ @litgenstein Feb 21
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      Replying to @seanmcarroll

      Good stuff! Do you think the classical lagrangian is unique? Or that it depends on how you take the classical limit?

      3 replies 0 retweets 16 likes
    4. Sean Carroll‏Verified account @seanmcarroll Feb 21
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      Replying to @litgenstein

      Certainly not for QCD; adding GGdual changes the quantum theory but not the classical one. In general there is no 1-to-1 or onto map from quantum to classical theories or back.

      2 replies 0 retweets 14 likes
      〈 Berger | Dillon 〉‏ @InertialObservr Feb 21
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      Replying to @seanmcarroll @litgenstein

      To add to this, the reason this doesn't show up classically is because GGdual is a total derivative, and so doesn't effect Euler Lagrange equations

      3:35 PM - 21 Feb 2020
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      • Anomaly Canceller
      0 replies 0 retweets 1 like

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