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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...

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\( \mathcal{N} = 1 \) 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...

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The 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...

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The 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...

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Gravity/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...

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Continuous 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...

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Holographic 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...

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Spin-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...

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Diffusion 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...

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Asymptotic 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...

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Dressing 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...

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On 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...

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Flavor 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...

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Elliptic 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...

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The 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...

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Higher 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...

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Heating 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...

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Conformal 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...

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A 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...

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Electromagnetic 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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