Antimatter from time-traveling electrons

mcmagicman530
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if an electron going forwards in time generates/is equivalent to a positron going backwards in time, would matter going backwards in time leave antimatter in its place (going forwards in time)?
thanks
 
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The usual interpretation of an electron (matter) going backwards in time is to call it a positron (anti-matter) going forwards in time. At least, I prefer to have particles and anti-particle all going forward in time.
 
thanks. i was just wondering if you actually had a time machine, would it annihilate itself upon initiation.
 
Yes, interesting question. That would probably depend on the design of your time machine. Unfortunately, most designs for "time machines" people come up with are theoretically impossible and such questions are void speculation.
 
Not an expert in QM. AFAIK, Schrödinger's equation is quite different from the classical wave equation. The former is an equation for the dynamics of the state of a (quantum?) system, the latter is an equation for the dynamics of a (classical) degree of freedom. As a matter of fact, Schrödinger's equation is first order in time derivatives, while the classical wave equation is second order. But, AFAIK, Schrödinger's equation is a wave equation; only its interpretation makes it non-classical...
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
Is it possible, and fruitful, to use certain conceptual and technical tools from effective field theory (coarse-graining/integrating-out, power-counting, matching, RG) to think about the relationship between the fundamental (quantum) and the emergent (classical), both to account for the quasi-autonomy of the classical level and to quantify residual quantum corrections? By “emergent,” I mean the following: after integrating out fast/irrelevant quantum degrees of freedom (high-energy modes...

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