Physics:Peres metric

From HandWiki

In mathematical physics, the Peres metric is defined by the proper time

dτ2=dt22f(t+z,x,y)(dt+dz)2dx2dy2dz2

for any arbitrary function f. If f is a harmonic function with respect to x and y, then the corresponding Peres metric satisfies the Einstein field equations in vacuum. Such a metric is often studied in the context of gravitational waves. The metric is named for Israeli physicist Asher Peres, who first defined the metric in 1959.

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