Light burden of memory: Constraining primordial black holes with high-energy neutrinos

Abstract

Recent studies point out that quantum effects, referred to as "memory burden", may slow down the evaporation of black holes. As a result, a population of light primordial black holes could potentially survive to the present day, thus contributing to the energy density of dark matter. In this work, we focus on light primordial black holes with masses $M_{\mathrm{PBH}}\lesssim 10^9\mathrm{g}$ that, due to the memory burden effect, are currently evaporating, emitting high-energy particles, among which neutrinos, in the local Universe. Analyzing the latest IceCube data, we place novel constraints on the combined parameter space of primordial black holes and the memory burden effect. We also study the projected reach of future neutrino telescopes such as IceCube-Gen2 and GRAND. We find that the neutrino observations are crucial to probe scenarios with highly-suppressed evaporation and light masses for primordial black holes.

7 pages, 2 figures. v2: references added. v3: version published in PRD

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Cited by in corpus (8)

• Ultralight Black Holes as Sources of High-Energy Particles
• Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
• High-energy gamma-ray emission from memory-burdened primordial black holes
• Primordial regular black holes as all the dark matter. III. Covariant canonical quantum gravity models
• Primordial Black Holes Evaporating before Big Bang Nucleosynthesis
• Memory burden effect of regular primordial black holes
• Gamma rays as leptonic portals to energetic neutrinos: a new Monte Carlo approach
• Microscopic primordial black holes as macroscopic dark matter from large extra dimensions