SergejMaterov's latest activity
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SergejMaterov replied to the thread A What happens when an operator maps a vector out of the Hilbert space?.If you drop symmetry, you get pathological, discontinuous, unbounded maps—but they’re of almost no use in analysis or physics. -
SergejMaterov replied to the thread I Would gravitons theoretically act like photons?.I think it is too early to talk about "graviton" at all for obvious reasons: 1. quantum gravity has not been built 2. "graviton" has not...
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SergejMaterov replied to the thread I A question about density matricies.You are absolutely right that each pure H or pure V beam will create an interference pattern by itself, once you set up the quantum...
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SergejMaterov replied to the thread I A question about density matricies.$$D = \frac{1}{\sqrt{2}}(H + V) \xrightarrow{\text{QWP}(H)} \frac{1}{\sqrt{2}}(H + iV) = \text{RCP}$$ $$D = \frac{1}{\sqrt{2}}(H + V)...
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SergejMaterov replied to the thread A A couple of long questions on positivity bounds for UV-complete EFTs.Regarding question 2, I believe that it is mathematically possible to “invert” the signs of all the restrictions of the EFT-hedron and...
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SergejMaterov replied to the thread I A question about density matricies.The quarter-wave plates reduce the interference to zero, and both mixtures behave identically. Any further manipulations (blocking the...
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SergejMaterov reacted to DaveE's post in the thread B Warp drive research of Prof David Pares with
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A geography professor that teaches meteorology won't get real funding to make warp drive. Try again Prof, stay in your lane. OTOH...