Recent content by renormalize

  1. R

    How do atoms build thoughts and emotions?

    It that's true, isn't discussing the "subjective experience" more akin to debating philosophy or religion instead of science?
  2. R

    Undergrad Do photons have mass? Why not?

    Yes, but the left-side of eq.(4.6.2) is strictly classical general relativity. My point is simply that classical GR can be sensibly coupled to matter systems that do exhibit "quantum behaviors" in order to analyze certain situations of interest, e.g., the expected gravitational field external to...
  3. R

    Undergrad Do photons have mass? Why not?

    The answer is that you couple gravity to expectation values of the particles and/or fields. See, e.g., https://www.google.com/books/edition/Quantum_Field_Theory_in_Curved_Spacetime/Iud7eyDxT1AC?hl=en&gbpv=0:
  4. R

    Undergrad Do photons have mass? Why not?

    How can this statement be true? A hydrogen atom in its ground state is stable against radiative decay precisely because of "quantum effects". Do you deny that the gravitational field outside such an atom in isolation is exactly that arising from the Schwarzschild metric of general relativity?
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    Undergrad Observation of the quantum phase of free fall and the consistency with the equivalence principle

    This experiment simply measures the time-dependence of the phase ##\phi\left(t\right)## of a wave packet free-falling at the Earth's surface; i.e., a packet subject to the Hamiltonian ##H=p^2/2m-mgz\,##, where ##g## is the local acceleration due to Newtonian gravity. No general relativity required.
  6. R

    How do atoms build thoughts and emotions?

    Sorry, but your two YouTube videos do not constitute "credible technical references". And your first link: is to a popular-science article discussing research by neuroscientist Christof Koch which states: "Koch acknowledges that analytic idealism is not an established scientific theory but a...
  7. R

    AI and Math Research

    A discussion of this topic and some controversy around it was started two days ago in this thread: https://www.physicsforums.com/threads/latest-notable-ai-accomplishments.937195/post-7321990
  8. R

    How do atoms build thoughts and emotions?

    Can you cite one or more credible technical references that support the notion that consciousness "is made from a fundamental energy present in the Universe, and we act as attractors or harvesters"? Or is this rather a proposition from philosophy and/or religion?
  9. R

    Undergrad Nobel Prize in Physics 2026 predictions

    I believe that starfractal refers to Nathan Cohen and his fractal invisibility cloak. For a recent summary see: Scientist-Inventor Denies Reverse Engineering of Invisibility Cloak. (It's possible that starfractal is tooting his own horn in post #3.)
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    Undergrad Was Richard Feynman's explanation of the twin paradox wrong?

    Explain how learning from YouTube videos instead of textbooks assures that you "...don't...learn physics that will be different for 100 years." Please be specific in your answer.
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    Graduate Combining loop quantum gravity with noncommutative geometry

    What are the chances that someone who reads Physics Forums can expertly address this question? Why don't you ask the authors of the 12 papers that cited your original reference? They all list their email addresses.
  12. R

    Graduate Combining loop quantum gravity with noncommutative geometry

    According to Google Scholar, in the last 15 years this article has been cited only twelve times. And of those dozen, seven are self-references by the original authors, meaning their paper has been cited by outside-researchers just five times. It's clear that the cited paper has negligibly...
  13. R

    Undergrad Spatial separation of entangled particles implies physical separability?

    Please cite a credible technical reference that states this.
  14. R

    What If All Matter Suddenly Changed To Anti-matter?

    Magnetic fields would change polarity because all magnetic fields are generated by electric currents (moving charges). Under matter##\rightarrow##antimatter, the sign of those currents would reverse and thus so would the magnetic fields the currents produce. What you're really asking is: what...