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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 4 Nov 2019
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      Warp Drives are in principal possible The key idea is to contract space-time in front of you and to expand it behind The Alcubierre Metric does just this, and is consistent with Einstein's Theory of General Relativitypic.twitter.com/vQuzMH6Him

      28 replies 147 retweets 625 likes
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    2. 〈 Berger | Dillon 〉‏ @InertialObservr 4 Nov 2019
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      The Alcubierre metric does however have its difficulties, as it admits a negative (!) energy density However, an Alcubierre-warp drive could still be realized by exploiting certain quantum effects (e.g. Casimir Effect) whose stress-energy tensors also admit negative energiespic.twitter.com/uu3oAFYSEu

      10 replies 22 retweets 157 likes
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    3. Primitive‏ @PrimitiveVR 4 Nov 2019
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      Replying to @InertialObservr

      Unfortunately the Casimir Effect only exhibits a *lower* but still positive energy density as compared to its surroundings. Not negative energy which is still unobserved.

      1 reply 0 retweets 1 like
    4. 〈 Berger | Dillon 〉‏ @InertialObservr 4 Nov 2019
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      Replying to @PrimitiveVR

      in the context of quantum field theory the casimir effect does admit a negative energy density .. see equation (3) and thereabout https://arxiv.org/pdf/gr-qc/9510071.pdf …

      1 reply 0 retweets 2 likes
    5. Primitive‏ @PrimitiveVR 4 Nov 2019
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      Replying to @InertialObservr

      Disagree, unless I'm understanding this wrong, but the conditions described in the paper are flat space-time and massless scalar field which are only achieved under "exotic" scenarios and to my knowledge have never been observed

      2 replies 0 retweets 1 like
    6. 〈 Berger | Dillon 〉‏ @InertialObservr 4 Nov 2019
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      Replying to @PrimitiveVR

      the point i was making isn't that they showed this in a qft on a curved spacetime, but that the classical casimir effect admits a negative energy density .. knowing how this generalizes to a curved manifold would require quantum gravity

      2 replies 0 retweets 4 likes
    7. PassComboCom  🛡️‏ @PassCombo 4 Nov 2019
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      Replying to @InertialObservr @PrimitiveVR

      So maybe a more correct sentence would be "Warp Drives are not impossible in current understanding of nature"

      1 reply 0 retweets 0 likes
      〈 Berger | Dillon 〉‏ @InertialObservr 4 Nov 2019
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      Replying to @PassCombo @PrimitiveVR

      That’s what it means for something to be in principle possible

      11:40 PM - 4 Nov 2019
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      • Vincent R.B. Blazy
      0 replies 0 retweets 1 like

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