Playing with Casimir in the vacuum sandbox

Abstract The Casimir effect continues to be a subject of discussion regarding its relationship, or the lack it, with vacuum energy fluctuating quantum fields. In this note, we propose Gedankenexperiment considering an imaginary process similar fluctuation in typical static set up. thought experiment leads intriguing conclusions minimum distance between plates when approaching Planck scale. More specifically, it is found that cannot reach value below $$(L/L_P)^{2/3}$$ ( L / P ) 2 3 lengths, being $$L_P$$ length and L lateral extension plates. Additional findings allow conclusion approach two towards separation asymptotic.