In stabilized Randall-Sundrum braneworlds, on-brane matter with positive trace of the energy-momentum tensor shifts the radion VEV and destroys gauge hierarchy resolution while negative trace preserves stability; explicit tachyonic instability conditions are derived for the Planck brane in FLRW and
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Tachyonic (In)stability in Randall-Sundrum Braneworld Scenarios
In stabilized Randall-Sundrum braneworlds, on-brane matter with positive trace of the energy-momentum tensor shifts the radion VEV and destroys gauge hierarchy resolution while negative trace preserves stability; explicit tachyonic instability conditions are derived for the Planck brane in FLRW and