Couch-Torrence conformal inversion, supersymmetry and conserved charges for D3-branes
Mohammad Akhond, Massimo Bianchi, Antonio Cristofaro, Fabio Riccioni
TLDR
This paper uses Couch-Torrence inversion to match conserved charges for D3-branes, relating scalar and spinorial charges via supersymmetry.
Key contributions
- Constructs Newman-Penrose and Aretakis scalar charges for D3-branes in D=10, D=4, D=5 geometries.
- Establishes a precise matching between these scalar charges using Couch-Torrence conformal inversion.
- Relates scalar (dilaton) charges to higher spin charges by exploiting Type IIB supergravity supersymmetry.
- Determines infinite towers of conserved spinorial charges and their precise map through the inversion.
Why it matters
This paper extends Couch-Torrence inversion to D3-brane geometries, unifying conserved charges at null-infinity and near-horizon. It uses supersymmetry to link scalar and higher-spin charges. This advances our understanding of black hole physics and string theory.
Original Abstract
An asymptotically flat spacetime in $D=4$ can be mapped via Couch-Torrence conformal inversion to the geometry around an extremal non-expanding and non-rotating horizon. At the linearized level, an infinite tower of conserved Newman-Penrose charges can be found at null-infinity, while infinitely many Aretakis charges are conserved in the near-horizon. Couch-Torrence inversion allows one to establish a matching between the two sets of asymptotic charges. In this work we construct the Newman-Penrose and Aretakis scalar charges in higher-dimensional geometries of D3-branes in $D=10$ and D3-brane bound states in $D=4$ and $D=5$ and establish a precise matching between them through the inversion. By exploiting the residual unbroken supersymmetry of Type IIB supergravity, we demonstrate that it is possible to relate scalar (complex dilaton) charges to higher spin charges. In particular, we determine infinite towers of conserved asymptotic spinorial charges associated with the dilatino fluctuations, and determine the map through inversion.
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