Canonical analysis of algebraic string actions
AbstractWe investigate the canonical aspects of the algebraic first order formulation of strings introduced two decades ago by Balachandran and collaborators. We slightly enlarge the Lagrangian...
View Article\( \mathcal{N} = 1 \) Chern-Simons theories, orientifolds and Spin(7) cones
AbstractWe construct three dimensional \( \mathcal{N} = 1 \) Chern-Simons theories living on M2 branes probing Spin(7) cones. We consider Spin(7) manifolds obtained as quotients of Calabi-Yau...
View ArticleThe non-compact elliptic genus: mock or modular
AbstractWe analyze various perspectives on the elliptic genus of non-compact supersymmetric coset conformal field theories with central charge larger than three. We calculate the holomorphic part of...
View ArticleThe influence of D-branes’ backreaction upon gravitational interactions...
AbstractWe argue that gravitational interactions between open strings ending on D3-branes are largely shaped by the D3-branes’ backreaction. To this end we consider classical open strings coupled to...
View ArticleGravity/spin-model correspondence and holographic superfluids
AbstractWe propose a general correspondence between gravity and spin models, inspired by the well-known IR equivalence between lattice gauge theories and the spin models. This suggests a connection...
View ArticleContinuous Hawking-Page transitions in Einstein-scalar gravity
AbstractWe investigate continuous Hawking-Page transitions in Einstein’s gravity coupled to a scalar field with an arbitrary potential in the weak gravity limit. We show that this is only possible in a...
View ArticleHolographic optics and negative refractive index
AbstractIn recent years a very exciting and intense activity has been devoted to the understanding and construction of materials that enjoy exotic optical properties, such as a negative refractive...
View ArticleSpin-2 spectrum of defect theories
AbstractWe study spin-2 excitations in the background ofthe recently-discovered type-IIB solutions of D’Hoker et al. These are holographically-dual to defect conformal field theories, and they are also...
View ArticleDiffusion constant of supercharge density in N = 4 SYM at finite chemical...
AbstractWe compute holographically the diffusion constant of supercharges in N = 4 SYM at finite chemical potential for the R-charge, by solving the equations of motion for the transverse mode of the...
View ArticleAsymptotic symmetry groups and operator algebras
AbstractWe associate vertex operators to space-time diffeomorphisms in flat space string theory, and compute their algebra, which is a diffeomorphism algebra with higher derivative corrections. As an...
View ArticleDressing the electron star in a holographic superconductor
AbstractWe construct new asymptotically AdS4 solutions dual to 2+1 CFTs at finite density and zero temperature by combining the ingredients of the electron star and the holographic superconductor. The...
View ArticleOn periodically driven AdS/CFT
AbstractWe use the AdS/CFT correspondence to study a thermally isolated conformal field theory in four dimensions which undergoes a repeated deformation by an external periodic time-dependent source...
View ArticleFlavor corrections to the entanglement entropy
AbstractWe consider the holographic entanglement entropy in \( \mathcal{N} \) = 4 SYM coupled to massive flavor degrees of freedom. The flavors are introduced by putting D7 branes in AdS5. The...
View ArticleElliptic genera and real Jacobi forms
AbstractWe construct real Jacobi forms with matrix index using path integrals. The path integral expressions represent elliptic genera of two-dimensional \( \mathcal{N} \) = (2, 2) supersymmetric...
View ArticleThe super-Higgs mechanism in fluids
AbstractSupersymmetry is spontaneously broken when the field theory stress-energy tensor has a non-zero vacuum expectation value. In local supersymmetric field theories the massless gravitino and...
View ArticleHigher poles and crossing phenomena from twisted genera
AbstractWe demonstrate that Appell-Lerch sums with higher order poles as well as their modular covariant completions arise as partition functions in the cigar conformal field theory with worldsheet...
View ArticleHeating up branes in gauged supergravity
AbstractIn this note, we explore the solution space of non-extremal black objects in 4D and 5D\( \mathcal{N} \) = 2 gauged supergravity in the presence of fluxes. We present first order rewritings of...
View ArticleConformal blocks and negativity at large central charge
AbstractWe consider entanglement negativity for two disjoint intervals in 1+1 dimensional CFT in the limit of large central charge. As the two intervals get close, the leading behavior of negativity is...
View ArticleA simple holographic model of a charged lattice
AbstractWe use holography to compute the conductivity in an inhomogeneous charged scalar background. We work in the probe limit of the four-dimensional Einstein-Maxwell theory coupled to a charged...
View ArticleElectromagnetic response of strongly coupled plasmas
AbstractWe present a thorough analysis of the electromagnetic response of strongly coupled neutral plasmas described by the gauge/gravity correspondence. The coupling of the external electromagnetic...
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