Janus and RG-flow interfaces from matter-coupled F(4) gauged supergravity

We study supersymmetric Janus solutions from matter-coupled F(4) gauged supergravity coupled to three vector multiplets and SO(4) SO(3) x SO(3) gauge group. There are two supersymmetric AdS6 vacua preserving all supersymmetries with SO(3) x SO(3) and SO(3)diag symmetries dual to N = 2 superconformal field theories (SCFTs) in five dimensions. We consider a truncation to SO(2)diag subset of SO(3)diag singlet scalars and find a number of new supersymmetric Janus solutions preserving eight supercharges. These solutions holographically describe conformal interfaces within N = 2 fivedimensional SCFTs involving deformations by source terms and vacuum expectation values of relevant and irrelevant operators. Apart from the Janus solutions interpolating between SO(3) x SO(3) AdS6 vacua, some of the solutions have SO(3)diag AdS6 vacua generated by holographic renormalization group (RG) flows from the SO(3) x SO(3) phases on both sides. We also give evidence for solutions describing RG-flow interfaces with a SO(3) x SO(3) AdS6 vacuum on one side and SO(3)diag AdS6 vacuum on the other side. The solutions provide first examples of Janus solutions involving more than one AdS6 vacuum in six-dimensional gauged supergravity.