Primordial Black Holes from Confinement

Abstract

A mechanism for the formation of primordial black holes is proposed. Here, heavy quarks of a confining gauge theory produced by de Sitter fluctuations are pushed apart by inflation and get confined after horizon re-entry. The large amount of energy stored in the colour flux tubes connecting the quark pair leads to black-hole formation. These are much lighter and can be of higher spin than those produced by standard collapse of horizon-size inflationary overdensities. Other difficulties exhibited by such mechanisms are also avoided. Phenomenological features of the new mechanism are discussed as well as accounting for both the entirety of the dark matter and the supermassive black holes in the galactic centres. Under proper conditions, the mechanism can be realised in a generic confinement theory, including ordinary QCD. We discuss a possible string-theoretic realisation via $D$-branes. Interestingly, for conservative values of the string scale, the produced gravity waves are within the range of recent NANOGrav data. Simple generalisations of the mechanism allow for the existence of a significant scalar component of gravity waves with distinct observational signatures.

arXiv comment12 pages, 6 figures; modifications to match published version

References in corpus (51)

• Binary Black Hole Mergers in the first Advanced LIGO Observing Run
• Brane Inflation
• Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog
• Primordial Black Holes as Dark Matter: Recent Developments
• Formation of Supermassive Black Holes
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Cosmic String Production Towards the End of Brane Inflation
• Cosmic F- and D-strings
• Primordial black hole constraints for extended mass functions
• Gravitational wave bursts from cusps and kinks on cosmic strings
• Near-Critical Gravitational Collapse and the Initial Mass Function of Primordial Black Holes
• The MICROSCOPE mission: first results of a space test of the Equivalence Principle
• Formation and evolution of cosmic D-strings
• Observation of critical phenomena and self-similarity in the gravitational collapse of radiation fluid
• Primordial black hole formation in the early universe: critical behaviour and self-similarity
• Millimetre-Range Forces in Superstring Theories with Weak-Scale Compactification
• Critical behaviour in gravitational collapse of radiation fluid --- A renormalization group (linear perturbation) analysis ---
• Cosmic microwave background bounds on primordial black holes including dark matter halo accretion
• Primordial black hole formation in the radiative era: investigation of the critical nature of the collapse
• A universal threshold for primordial black hole formation
• Cosmic Conundra Explained by Thermal History and Primordial Black Holes
• The Threshold for Primordial Black Hole Formation: a Simple Analytic Prescription
• MICROSCOPE mission: first constraints on the violation of the weak equivalence principle by a light scalar dilaton
• The Evolution of Galaxy Number Density at z < 8 and its Implications
• Changing alpha With Time: Implications For Fifth-Force-Type Experiments And Quintessence
• The Initial Spin Probability Distribution of Primordial Black Holes
• Spins of primordial black holes formed in the matter-dominated phase of the Universe
• Primordial black hole formation by vacuum bubbles
• The Evolution of Primordial Black Holes and their Final Observable Spins
• Black Hole Metamorphosis and Stabilization by Memory Burden
• Testing Alternative Theories of Gravity using LISA
• Gravitational Waves from Broken Cosmic Strings: The Bursts and the Beads
• Spin of Primordial Black Holes
• A Relationship between Supermassive Black Hole Mass and the Total Gravitational Mass of the Host Galaxy
• Constraints on Stupendously Large Black Holes
• Spin Distribution of Primordial Black Holes
• Infrared Hierarchy, Thermal Brane Inflation and Superstrings as Superheavy Dark Matter
• Conditions for Optimal Growth of Black Hole Seeds
• Effects of Critical Collapse on Primordial Black-Hole Mass Spectra
• Signatures of primordial black holes as seeds of supermassive black holes
• Gravitational wave background from hybrid topological defects
• Primordial black hole formation by vacuum bubbles II
• Gravitational radiation from monopoles connected by strings
• High Energy Particles from Monopoles Connected by Strings
• On Ellipsoidal Collapse and Primordial Black-Hole Formation
• REMOVING THE COSMOLOGICAL BOUND ON THE AXION SCALE
• NANOGrav Hints on Planet-Mass Primordial Black Holes
• A Microscopic Model of Holography: Survival by the Burden of Memory
• Equivalence principle violation at finite temperature in scalar-tensor gravity
• Primordial black holes from monopoles connected by strings
• Gravitational radiation from rotating monopole-string systems

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