33 Result(s)
within
G. Papadopoulos
Quantum Field Theories, String Theory
-
Article
Open AccessTCFHs and hidden symmetries of type IIA AdS backgrounds
We present the twisted covariant form hierarchies (TCFHs) of warped (massive) IIA AdS backgrounds. As a consequence we demonstrate that all Killing spinor form bilinears satisfy a generalisation of the conform...
-
Article
Open AccessThe TCFHs of D = 11 AdS backgrounds and hidden symmetries
We present the TCFHs of all AdS backgrounds of 11-dimensional supergravity and explore some of the properties of the associated connections. Therefore, we demonstrate that all Killing spinor bilinears satisfy ...
-
Article
Open AccessTCFHs, IIB warped AdS backgrounds and hidden symmetries
We present the twisted covariant form hierarchies (TCFHs) on the internal spaces of all type IIB warped AdS backgrounds. As a result we demonstrate that the form bilinears on the internal spaces satisfy a gene...
-
Article
Open AccessTCFHs, hidden symmetries and type II theories
We present the twisted covariant form hierarchies (TCFH) of type IIA and IIB 10-dimensional supergravities and show that all form bilinears of supersymmetric backgrounds satisfy the conformal Killing-Yano equa...
-
Article
Open AccessTwisted form hierarchies, Killing-Yano equations and supersymmetric backgrounds
We show that the Killing spinor equations of all supergravity theories which may include higher order corrections on a (r,s)-signature spacetime are associated with twisted covariant form hierarchies. These hi...
-
Article
Open AccessAll Killing superalgebras for warped AdS backgrounds
We present all the symmetry superalgebras g \( \mathfrak{g} \) of all warpe...
-
Article
Open AccessA non-existence theorem for N > 16 supersymmetric AdS3 backgrounds
We show that there are no smooth warped AdS3 solutions in 10- and 11- dimensional supergravities which preserve strictly more than 16 supersymmetries and have internal space a compact without boundary manifold.
-
Article
Open AccessAdS4 backgrounds with N > 16 supersymmetries in 10 and 11 dimensions
We explore all warped AdS4 × w M D−4 backgrounds with the most general allowed fluxes that preserve more than 16 supersymmetries in D = 10- and 11-dimensional supergravities. Af...
-
Article
Open AccessOn supersymmetric AdS6 solutions in 10 and 11 dimensions
We prove a non-existence theorem for smooth, supersymmetric, warped AdS6 solutions with connected, compact without boundary internal space in D = 11 and (massive) IIA supergravities. In IIB supergravity we show t...
-
Article
Open AccessPatching DFT, T-duality and gerbes
We clarify the role of the dual coordinates as described from the perspectives of the Buscher T-duality rules and Double Field Theory. We show that the T-duality angular dual coordinates cannot be identified w...
-
Article
Open AccessDynamical symmetry enhancement near \( \mathcal{N} \) = 2, D = 4 gauged supergravity horizons
We show that all smooth Killing horizons with compact horizon sections of 4-dimensional gauged ...
-
Article
Open AccessAnomaly corrected heterotic horizons
We consider supersymmetric near-horizon geometries in heterotic supergravity up to two loop order in sigma model perturbation theory. We identify the conditions for the horizons to admit enhancement of supersy...
-
Article
Open AccessAdS5 backgrounds with 24 supersymmetries
We prove a non-existence theorem for smooth AdS 5 solutions with connected, compact without boundary internal space that preserve strictly 24 supersymmetries. In particular, we sho...
-
Article
Open AccessSupersymmetry of IIA warped flux AdS and flat backgrounds
We identify the fractions of supersymmetry preserved by the most general warped flux AdS and flat backgrounds in both massive and standard IIA supergravities. We find that AdS n
-
Article
Open AccessC-spaces, generalized geometry and double field theory
We construct a C-space associated with every closed 3-form on a spacetime M and show that it depends on the class of the form in ...
-
Article
Open AccessGeometry and supersymmetry of heterotic warped flux AdS backgrounds
We classify the geometries of the most general warped, flux AdS backgrounds of heterotic supergravity up to two loop order in sigma model perturbation theory. We show under some mild assumptions that there are...
-
Article
Open AccessDynamical symmetry enhancement near IIA horizons
We show that smooth type IIA Killing horizons with compact spatial sections preserve an even number of supersymmetries, and that the symmetry algebra of horizons with non-trivial fluxes includes an ...
-
Article
Open AccessSupersymmetry of AdS and flat backgrounds in M-theory
We give a systematic description of all warped AdS n and ...
-
Article
Open AccessSupersymmetry of AdS and flat IIB backgrounds
We present a systematic description of all warped AdS n × w M 10−n and ...
-
Article
Open AccessSeeking the balance: patching double and exceptional field theories
We investigate the patching of double and exceptional field theories. In double field theory the patching conditions imposed on the spacetime after solving the strong section condition imply that the 3-form fi...
