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The influence one event, process, or state, has on another event, process, or state, whereby the latter is at least partly dependent on the former.

1 vote
4 answers
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Light-like Interval

In SR, the interval $I$ between two spacetime events is called light-like if $I=0$. Griffiths in his Introduction to Electrodynamics book says that [page 503], If $I=0$ we call the interval light …
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5 votes
1 answer
903 views

Quantization surface in QFT

What does the Quantization Surface mean here? Reference: H. Latal W. Schweiger (Eds.) - Methods of Quantization
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