Coleman-Weinberg potential in $p$-adic field theory
2020
In this paper, we study
$$\lambda \phi ^4$$
scalar field theory defined on the unramified extension of p-adic numbers
$${\mathbb {Q}}_{p^n}$$
. For different “space-time” dimensions n, we compute one-loop quantum corrections to the effective potential. Surprisingly, despite the unusual properties of non-Archimedean geometry, the Coleman–Weinberg potential of p-adic field theory has structure very similar to that of its real cousin. We also study two formal limits of the effective potential,
$$p \rightarrow 1$$
and
$$p \rightarrow \infty $$
. We show that the
$$p\rightarrow 1$$
limit allows to reconstruct the canonical result for real field theory from the p-adic effective potential and provide an explanation of this fact. On the other hand, in the
$$p\rightarrow \infty $$
limit, the theory exhibits very peculiar behavior with emerging logarithmic terms in the effective potential, which has no analogue in real theories.
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