Virtual particles do not possess a defined lifetime as they are transient fluctuations in a vacuum state, appearing and disappearing without a measurable duration. This phenomenon is closely associated with concepts such as zero-point energy and the Casimir effect. The consensus among physicists is that virtual particles exist purely as mathematical constructs within quantum field theory, lacking physical existence and therefore any mechanism to prolong their presence.
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No. Virtual particles have no life and hence no lifetime. See https://www.physicsforums.com/insights/misconceptions-virtual-particles/mitrasoumya said:I want to know if there is a lifetime (i.e. a time limit) for which these virtual particles can exist before disappearing.