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astro-ph.CO2024
Primordial Black Holes from Domain Wall Density Fluctuations: Bridging Gravitational Wave Observations Across Two Frequency Bands
Bo-Qiang Lu, Cheng-Wei Chiang, Tianjun Li
We propose a novel mechanism for the formation of primordial black holes by demonstrating that the delayed production of isocurvature perturbations resulting from Poisson fluctuati…
astro-ph.CO2024
Probing Primordial Black Hole Formation from Domain Wall Isocurvature Perturbations: Constraints and Implications
Bo-Qiang Lu, Cheng-Wei Chiang, Tianjun Li
Domain walls are topological defects produced by the spontaneous symmetry-breaking of discrete symmetry during cosmological phase transitions. Domain walls can significantly contri…