In a 3D gauged supergravity, thermal holographic RG flows come in monotonic and non-monotonic classes, with a special analytic class where the metric is exactly BTZ and the scalar is hypergeometric.
Exact holographic RG flows and the $A_{1}\times A_{1}$ Toda chain
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We construct analytic solutions of Einstein gravity coupled to a dilaton field with a potential given by a sum of two exponentials, by rewriting the equations of motion in terms of an integrable Toda chain. These solutions can be interpreted as domain walls interpolating between different asymptotics, and as such they can have interesting applications in holography. In some cases, we can construct a solution which interpolates between an AdS fixed point in the UV limit and a hyperscaling violating boundary in the IR region. We also find analytic black brane solutions at finite temperature. We discuss the properties of the solutions and the interpretation in terms of RG flow.
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More on thermal holographic RG flows in a 3D gauged supergravity
In a 3D gauged supergravity, thermal holographic RG flows come in monotonic and non-monotonic classes, with a special analytic class where the metric is exactly BTZ and the scalar is hypergeometric.