Regular Article - Theoretical Physics
Holographic RG flows and Janus solutions from matter-coupled gauged supergravity
String Theory and Supergravity Group, Department of Physics, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, 10330, Bangkok, Thailand
Accepted: 7 June 2021
Published online: 19 June 2021
We study an truncation of four-dimensional gauged supergravity coupled to six vector multiplets with gauge group and find a new class of holographic RG flows and supersymmetric Janus solutions. In this truncation, there is a unique supersymmetric vacuum dual to an SCFT in three dimensions. In the presence of the axion, the RG flows generally preserve supersymmetry while the supersymmetry is enhanced to for vanishing axion. We find solutions interpolating between the vacuum and singular geometries with different residual symmetries. We also show that all the singularities are physically acceptable within the framework of four-dimensional gauged supergravity. Accordingly, the solutions are holographically dual to RG flows from the SCFT to a number of non-conformal phases in the IR. We also find and Janus solutions with and symmetries, respectively. The former is obtained from a truncation of all scalars from vector multiplets and can be regarded as a solution of pure gauged supergravity. On the other hand, the latter is a genuine solution of the full matter-coupled theory. These solutions describe conformal interfaces in the SCFT with and supersymmetries.
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