Torsion and the Gravity Dual of Parity Symmetry Breaking in AdS4-CFT3 Holography - High Energy Physics - TheoryReportar como inadecuado




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Abstract: We study four dimensional gravity with a negative cosmological constantdeformed by the Nieh-Yan torsional topological invariant with aspacetime-dependent coefficient. We find an exact solution of the Euclideansystem, which we call the torsion vortex, having two asymptotic AdS4 regimessupported by a pseudoscalar with a kink profile. We propose that the torsionvortex is the holographic dual of a three dimensional system that exhibitsdistinct parity breaking vacua. The torsion vortex represents a holographictransition between these distinct vacua. We expect that from the boundary pointof view, the torsion vortex represents a `domain wall- between the two distinctvacua.From a bulk point of view, we point out an intriguing identification of theparameters of the torsion vortex with those of an Abrikosov vortex in a Type Isuperconductor. Following the analogy, we find that external Kalb-Ramond fluxthen appears to support bubbles of flat spacetime within an asymptotically AdSgeometry.



Autor: Robert G. Leigh, Nam N. Hoang, Anastasios C. Petkou

Fuente: https://arxiv.org/







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