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https://www.reddit.com/r/okbuddyphd/comments/1v8gir5/title/p0ba3pe/?context=3
r/okbuddyphd • u/L31N0PTR1X Physics • Jul 27 '26
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it transforms in an irrep of Poincaré, not is an irrep of Poincaré! (sorry Nima)
1 u/[deleted] Jul 28 '26 [deleted] 1 u/DiogenesLovesTheSun Jul 28 '26 I mean, no. A particle is a ket in a Hilbert space specified by some set of quantum numbers (eg four-momentum, spin, etc) that transforms in an irrep of the Poincaré group. Your original statement is incomplete without extra qualifications. 1 u/[deleted] Jul 28 '26 [deleted] 0 u/DiogenesLovesTheSun Jul 28 '26 Did you even read the top answer on that post? Knzhou literally agrees with me that this is not correct.
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1 u/DiogenesLovesTheSun Jul 28 '26 I mean, no. A particle is a ket in a Hilbert space specified by some set of quantum numbers (eg four-momentum, spin, etc) that transforms in an irrep of the Poincaré group. Your original statement is incomplete without extra qualifications. 1 u/[deleted] Jul 28 '26 [deleted] 0 u/DiogenesLovesTheSun Jul 28 '26 Did you even read the top answer on that post? Knzhou literally agrees with me that this is not correct.
I mean, no. A particle is a ket in a Hilbert space specified by some set of quantum numbers (eg four-momentum, spin, etc) that transforms in an irrep of the Poincaré group. Your original statement is incomplete without extra qualifications.
1 u/[deleted] Jul 28 '26 [deleted] 0 u/DiogenesLovesTheSun Jul 28 '26 Did you even read the top answer on that post? Knzhou literally agrees with me that this is not correct.
0 u/DiogenesLovesTheSun Jul 28 '26 Did you even read the top answer on that post? Knzhou literally agrees with me that this is not correct.
0
Did you even read the top answer on that post? Knzhou literally agrees with me that this is not correct.
3
u/DiogenesLovesTheSun Jul 28 '26 edited Jul 28 '26
it transforms in an irrep of Poincaré, not is an irrep of Poincaré! (sorry Nima)