Emerging Fermi liquids from regulated quantum electron stars

Chagnet, N.J.A.; Dukic, V.; Cubrovic, M.; Schalm, K.E. (2022)

Article / Letter to editor

We construct a fully quantum zero-temperature electron star in a soft-wall regulated anti-de-Sitter Einstein-Maxwell-Dirac theory that is thermodynamically stable compared to the Reissner-Nordstrom black hole. The soft wall only acts on the effective mass of the fermionic degrees of freedom, and allows for a controlled fully backreacted solution. The star is holographically dual to an RG flow where a gapped Fermi liquid starts to emerge from a UV CFT, but decouples again once the effective energy scale becomes lower than the gap of the fermionic degrees of freedom. The RG flow then returns to a non-trivial strongly coupled relativistic fixed point with a holographic dual. Our regulated quantum electron star is thus the fermionic analogue of the Horowitz-Roberts-Gubser-Rocha AdS-to-AdS domain wall solution for the holographic superconductor.

• All authors: Chagnet, N.J.A.; Dukic, V.; Cubrovic, M.; Schalm, K.E.
• Date: 2022-08-22
• Journal: Journal of High Energy Physics
• Volume: 2022
• DOI: doi:10.1007/JHEP08(2022)222
• Link: https://link.springer.com/article/10.1007/JHEP08(2022)222