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Bibliographic Details
Main Authors: Muntean, Adrian, Rui, Giulia
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2602.02818
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Table of Contents:
  • We study a nonlinear and nonlocal elliptic equation posed on the flat torus. While constant solutions always exist, we show that uniqueness fails in general. Using spectral analysis and the Crandall--Rabinowitz bifurcation theorem, we prove the existence of branches of non-constant periodic solutions bifurcating from constant states. This result is qualitative and non-constructive. Using a conceptually different argument, we construct explicit multiple solutions for a specific one--dimensional formulation of our target problem.