Superconducting loop quantum gravity and the cosmological constant

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Alexander, Stephon H. S.
Calcagni, Gianluca
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Abstract
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We argue that the cosmological constant is exponentially suppressed in a candidate ground state of loop quantum gravity as a nonperturbative effect of a holographic Fermi-liquid theory living on a two-dimensional spacetime. Ashtekar connection components, corresponding to degenerate gravitational configurations breaking large gauge invariance and CP symmetry, behave as composite fermions that condense as in Bardeen-Cooper-Schrieffer theory of superconductivity. Cooper pairs admit a description as wormholes on a de Sitter boundary.
Comment: 10 pages; v2 matches the published version
Keywords
High Energy Physics - Theory, Astrophysics, Condensed Matter - Superconductivity, General Relativity and Quantum Cosmology
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