Physical laws are low-energy approximations to reality, 1.3.2

d_2019_01_31__23_13_13_PM_

QCD, Maxwell, Dirac equation, spin wave excitation, superconductivity, …

~ low energy physics

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symmetry breaking

\displaystyle{\downarrow}

local minimum

\displaystyle{\downarrow}

simple physics

— Me@2019-05-06 11:12:02 PM

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2019.05.06 Monday (c) All rights reserved by ACHK