most citedThe Cauchy problem for semi-linear Klein-Gordon equations in Friedmann-Lemaître-Robertson-Walker spacetimes

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math.AP2025

Finite time blow-up of semi-linear Klein-Gordon equations with positive initial energy in FLRW spacetimes

Makoto Nakamura, Takuma Yoshizumi

Blowing-up solutions for semi-linear Klein-Gordon equations are considered in Friedmann-Lemaître-Robertson-Walker spacetimes. Some sufficient conditions are shown by applying the c…