Roberto Pavani's latest activity
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.@renormalize I agree that "Nature obeys the Principle of Least Action" is a valid starting point. But even granting that, the *form* of... -
Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.The connection is this: energy conservation was an empirical discovery long before we had Lagrangians. When we formalized it via...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.I agree with you all. Let me clarify what I mean: I'm not questioning that energy is conserved. Noether's theorem guarantees that...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.Each sector separately has time-translation symmetry and its own conserved energy. The fact that energy can flow between sectors while...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.Noether's theorem states that every continuous symmetry of the action of a physical system with conservative forces has a corresponding...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.Noether’s theorem is ok, but can be used because we assume to write a combined lagrangian that is justified by the energy conservation...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.The conservation of energy between gravity and Electromagnetism and Quantum Mechanics (e.g annichilation of electron and positron) We...
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Roberto Pavani replied to the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle?.true, but there is a big difference between: I assume the Dirac Equation for my Theory I derive the Dirac Equation from my Theory
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Roberto Pavani posted the thread Graduate Is Energy conservation among sectors (EM,GR,QM) a principle? in Classical Physics.Considering QM,EM,GR "sectors" we know that the energy conservation apply but this is a principle. Noether theorem provides a...
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Roberto Pavani replied to the thread Graduate How valid is the Block Universe theory?.Whether the block universe is truly real is ultimately a metaphysical question. However, mathematically it is precisely what general...