32 Result(s)
within
J. Gutowski
English
Quantum Field Theories, String Theory
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Article
Open AccessSupersymmetric dS4 solutions in D = 11 supergravity
The necessary and sufficient conditions for warped product dS4 solutions in D = 11 supergravity to be supersymmetric are determined. The Killing spinor is associated with two possible stabilizer groups, SU(3) and...
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Article
Open AccessN = 4 near-horizon geometries in D = 11 supergravity
Extreme near-horizon geometries in D = 11 supergravity preserving four supersymmetries are classified. It is shown that the Killing spinors fall into three possible orbits, corresponding to pairs of spinors defin...
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Article
Open AccessCosmological solutions, a new wick-rotation, and the first law of thermodynamics
We present a modified implementation of the Euclidean action formalism suitable for studying the thermodynamics of a class of cosmological solutions containing Killing horizons. To obtain a real metric of defi...
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Article
Open AccessNeutral signature gauged supergravity solutions
We classify all supersymmetric solutions of minimal D = 4 gauged supergravity with (2) signature and a positive cosmological constant which admit exactly one Killing spinor. This classification produces a geometr...
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Open AccessReal Killing spinors in neutral signature
Spinorial geometry methods are used to classify solutions admitting Majorana Killing spinors of the minimal 4-dimensional supergravity in neutral signature, with van- ishing cosmological constant and a single ...
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Article
Open AccessFrom static to cosmological solutions of \( \mathcal{N} \) = 2 supergravity
We obtain cosmological solutions with Kasner-like asymptotics in N \( \mathcal{N} \) ...
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Open AccessAll Killing superalgebras for warped AdS backgrounds
We present all the symmetry superalgebras g \( \mathfrak{g} \) of all warpe...
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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...
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Open AccessCalibrated entanglement entropy
The Ryu-Takayanagi prescription reduces the problem of calculating entanglement entropy in CFTs to the determination of minimal surfaces in a dual anti-de Sitter geometry. For 3D gravity theories and BTZ black...
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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 ...
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Open AccessFive-dimensional Nernst branes from special geometry
We construct Nernst brane solutions, that is black branes with zero entropy density in the extremal limit, of FI-gauged minimal five-dimensional supergravity coupled to an arbitrary number of vector multiplets...
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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...
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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
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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...
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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 ...
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Article
Open AccessSupersymmetry of AdS and flat backgrounds in M-theory
We give a systematic description of all warped AdS n and ...
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Open AccessSupersymmetry of AdS and flat IIB backgrounds
We present a systematic description of all warped AdS n × w M 10−n and ...
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Open AccessNon-existence of supersymmetric AdS 5 black rings
It has been proven in ar**v:1303.0853 that all regular supersymmetric near-horizon geometries in minimal five-dimensional gauged supergravity admit automatic supersymmetry enhancement. Using this result, the i...
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Open AccessIndex theory and supersymmetry of 5D horizons
We prove that the near-horizon geometries of minimal gauged five-dimensional supergravity preserve at least half of the supersymmetry. If the near-horizon geometries preserve a larger fraction, then they are l...
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Article
Index theory and dynamical symmetry enhancement near IIB horizons
We show that the number of supersymmetries of IIB black hole horizons is N =2N − + 2 index(D λ),where index(D λ) is the index of the Dirac o...
