Vanishing into the Bulk: A Higher-Dimensional explanation for the disappearance of PHL 293B-LBV

Abstract

In the current work, the possible explanations for the disappearance of PHL 293B-LBV using higher-dimensional physics, effective field theory, and interactions with dark matter or cosmic strings are studied. It has been proposed that PHL 293B-LBV’s disappearance is a consequence of matter leakage into extra dimensions, which are derived through braneworld physics, effective field theory, and interactions with dark matter or cosmic strings. Under the resonance (mΦ ≈ mΨ ∼ 10⁻¹⁸ GeV, g_int ∼ 0.012), the star’s mass (50 M_ʘ) decays in ∼ 1 day (Γ ∼ 1.16 × 10−⁵ s −¹). This predicts lensing shifts (∆θ ∼ 8 × 10−⁶ arcsec) and orbital perturbations (∆v ∼ 60 cm/s), which are testable by LSST and Euclid, with KK graviton bounds (h < 10⁻⁴⁰) and seems consistent with non-detection. The solutions obtained in this work suggest the existence of bound states as well as possible resonances at specific energy levels. Those are determined by g_int, mΦ, and mΨ. From an effective field theory perspective, low-energy parameters such as coupling constants and mass terms are discussed. This work suggests that the star’s disappearance could be a consequence of fundamental physics rather than an astrophysical anomaly. A dispersion relation that governs matter leakage from the brane into the bulk is derived. Also, it has been shown that an imaginary component in the energy spectrum leads to an exponential decay of the star’s observable mass. This phenomenon explains the absence of usual astrophysical events such as supernova explosions or black hole formation. It has been found that unique and rare conditions affected the PHL 293B, but not the nearby stars.