AbstractWe study an $$SO(2)\times SO(2)\times SO(2)\times SO(2)$$
S
O
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2
)
×
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2
)
×
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2
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×
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2
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truncation of four-dimensional $$N=4$$
N
=
4
gauged supergravity coupled to six vector multiplets with $$SO(4)\times SO(4)$$
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4
)
×
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4
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gauge group and find a new class of holographic RG flows and supersymmetric Janus solutions. In this truncation, there is a unique $$N=4$$
N
=
4
supersymmetric $$AdS_4$$
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4
vacuum dual to an $$N=4$$
N
=
4
SCFT in three dimensions. In the presence of the axion, the RG flows generally preserve $$N=2$$
N
=
2
supersymmetry while the supersymmetry is enhanced to $$N=4$$
N
=
4
for vanishing axion. We find solutions interpolating between the $$AdS_4$$
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4
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 $$N=4$$
N
=
4
SCFT to a number of non-conformal phases in the IR. We also find $$N=4$$
N
=
4
and $$N=2$$
N
=
2
Janus solutions with $$SO(4)\times SO(4)$$
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4
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×
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4
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and $$SO(2)\times SO(2)\times SO(3)\times SO(2)$$
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×
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×
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×
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symmetries, respectively. The former is obtained from a truncation of all scalars from vector multiplets and can be regarded as a solution of pure $$N=4$$
N
=
4
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 $$N=4$$
N
=
4
SCFT with $$N=(4,0)$$
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=
(
4
,
0
)
and $$N=(2,0)$$
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=
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2
,
0
)
supersymmetries.
Influence of Diffusion and Impedence Parameters on Wave Propagation in Thermoelastic Medium
