2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52878Starting with the holographic dark energy model of Li it is shown that the holographic screen at the future event horizon is sent toward infinity in the phantom energy case, so allowing for the existence of unique fundamental theories which are mathematically consistent in phantom cosmologies.7 pages, LaTex, some references and comments are addedHigh Energy Physics - Theorytext