Christiana Pantelidou

Spatially modulated instabilities of magnetic black branes

A bstractWe investigate spatially modulated instabilities of magnetically charged AdS2 ×

Magnetic and electric AdS solutions in string- and M-theory

{\mathbb{R}^2}

Competing p-wave orders

, AdS3 ×

Conformal field theories in d = 4 with a helical twist

{\mathbb{R}^2}

Semi-local quantum criticality in string/M-theory.

and AdS2 ×

Three-dimensional super Yang-Mills with compressible quark matter

{\mathbb{R}^3}

Towards a Holographic Quark Matter Crystal

backgrounds in a broad class of theories, including those arising from KK reductions of ten and eleven dimensional supergravity. We show that magnetically charged black brane solutions in D = 4, 5 spacetime dimensions, whose zero temperature near horizon limit approach these backgrounds, can have instabilities that are dual to phases with current density waves that spontaneously break translation symmetry. Our examples include spatially modulated instabilities for a new class of magnetic black brane solutions of D = 5 SO(6) gauged supergravity, that we construct in closed form, which are dual to new phases of N = 4 SYM theory.

Unquenched flavor on the Higgs branch.

The stability properties of a family of magnetic solutions of D = 5, SO(6) gauged SUGRA are investigated in more detail. We construct an analogous family of magnetic solutions of D = 4, SO(8) gauged SUGRA, including a family of supersymmetric solutions, and also investigate their stability. We construct supersymmetric domain walls that interpolate between AdS5 and an solution and also between AdS4 and an solution which provide stable zero temperature ground states for the corresponding dual CFTs. We also construct new families of electric and solutions.

Holography with a Landau pole

We construct electrically charged, asymptotically AdS5 black hole solutions that are dual to d = 4 CFTs in a superfluid phase with either p-wave or (p + ip)-wave order. The two types of black holes have non-vanishing charged two-form in the bulk and appear at the same critical temperature in the unbroken phase. Both the p-wave and the (p + ip)-wave phase can be thermodynamically preferred, depending on the mass and charge of the two-form, and there can also be first order transitions between them. The p-wave black holes have a helical structure and some of them exhibit the phenomenon of pitch inversion as the temperature is decreased. Both the p-wave and the (p + ip)-wave black holes have zero entropy density ground states at zero temperature and we identify some new ground states which exhibit scaling symmetry, including a novel scenario for the emergence of conformal symmetry in the IR.

Holographic magnetisation density waves

Within the context of holography we study the general class of