103 citations · 395 across the 20 of their papers we have counts for
16 papers · 1 filter
A scenario for AdS and dS emergence from quantum fluctuations
Anna Karlsson
Spacetime emergence from entanglement has long been presumed to be holographic, with emergence from quantum interactions in a boundary theory. Since that setup is difficult to exte…
Building spacetime from effective interactions between quantum fluctuations
Anna Karlsson
We describe how a model of effective interactions between quantum fluctuations under certain assumptions can be constructed in a way so that the large-scale limit gives an effectiv…
Concerns about the replica wormhole derivation of the island conjecture
Anna Karlsson
In a close look at the replica wormhole derivation of the island conjecture, we note a discrepancy in the derived matrix eigenvalues in the limit where the Hawking radiation entrop…
Replica wormhole and island incompatibility with monogamy of entanglement
Anna Karlsson
We argue that the `island conjecture' and the replica wormhole derivation of the Page curve break monogamy of entanglement through allowing black hole interior states to be non-cla…
A paradox regarding monogamy of entanglement
Anna Karlsson
In density matrix theory, entanglement is monogamous. However, we show that qubits can be arbitrarily entangled in a different, recently constructed model of qubit entanglement [ar…
Building flat space-time from information exchange between quantum fluctuations
Anna Karlsson
We consider a hypothesis in which classical space-time emerges from information exchange (interactions) between quantum fluctuations in the gravity theory. In this picture, a line…
Space-time emergence from individual interactions
Anna Karlsson
A scenario of space-time emergence from individual interactions at the quantum level requires correlations encoding a scalar product, for large-scale emergence of space orientation…
Tree amplitudes from nonlinear (super)symmetries in Volkov-Akulov theory
Anna Karlsson, Hui Luo, Divyanshu Murli
The characteristics of tree level scattering amplitudes in theories with nonlinear (super)symmetries were recently proposed by Kallosh to be encoded in a simple way directly from t…
Origin of Soft Limits from Nonlinear Supersymmetry in Volkov-Akulov Theory
Renata Kallosh, Anna Karlsson, Divyanshu Murli
We apply the background field technique, recently developed for a general class of nonlinear symmetries, at tree level, to the Volkov-Akulov theory with spontaneously broken N=1 su…
Orthogonal Nilpotent Superfields from Linear Models
Renata Kallosh, Anna Karlsson, Benjamin Mosk +1
We derive supersymmetry/supergravity models with constrained orthogonal nilpotent superfields from the linear models in the formal limit where the masses of the sgoldstino, inflati…
From Linear to Non-linear Supersymmetry via Functional Integration
Renata Kallosh, Anna Karlsson, Divyanshu Murli
We derive a complete pure de Sitter supergravity action with non-linearly realized supersymmetry and its rigid limit, the Volkov-Akulov action, from the corresponding models with l…
Pure spinor indications of ultraviolet finiteness in D=4 maximal supergravity
Anna Karlsson
The ultraviolet divergences of amplitude diagrams in maximal supergravity are characterised by a first possible divergence at seven loops for the 4-point amplitude (logarithmic) an…
Ultraviolet divergences in maximal supergravity from a pure spinor point of view
Anna Karlsson
The ultraviolet divergences of amplitude diagrams in maximal supergravity are investigated using the pure spinor superfield formalism in maximal supergravity, with maximally supers…
Exceptional geometry and tensor fields
Martin Cederwall, Joakim Edlund, Anna Karlsson
We present a tensor calculus for exceptional generalised geometry. Expressions for connections, torsion and curvature are given a unified formulation for different exceptional grou…
Loop amplitudes in maximal supergravity with manifest supersymmetry
Martin Cederwall, Anna Karlsson
We present a description for amplitude diagrams in maximal supergravities obtained by dimensional reduction from D=11, derived from a field theory point of view using the pure spin…
Pure spinor superfields and Born-Infeld theory
Martin Cederwall, Anna Karlsson
We present a method for introducing and analysing higher-derivative deformations of maximally supersymmetric field theories. Such terms are built in the pure spinor superfield fram…