The generalised Lie derivative of (s)pinor fields on Courant algebroids is constructed via a natural connection on the space of generalised metrics, yielding the formula L_u ψ = D_u ψ + (1/2)(D_u a^b)γ_{ab}ψ.
Superspace Duality in Low-Energy Superstrings
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abstract
We extend spacetime duality to superspace, including fermions in the low-energy limits of superstrings. The tangent space is a curved, extended superspace. The geometry is based on an enlarged coordinate space where the vanishing of the d'Alembertian is as fundamental as the vanishing of the curl of a gradient.
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A particle worldline in E8 exceptional field theory is made gauge-invariant by adding a coadjoint-orbit "duality charge", and the same Hamiltonian framework organizes exotic zero-brane dynamics such as the 0^(1,7) brane.
The work analyzes the dual geometry of charged black holes in a T-duality invariant heterotic string theory in two dimensions and extends a prior non-perturbative solution to multiple abelian gauge fields.
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On the generalised Lie derivative of (s)pinor fields
The generalised Lie derivative of (s)pinor fields on Courant algebroids is constructed via a natural connection on the space of generalised metrics, yielding the formula L_u ψ = D_u ψ + (1/2)(D_u a^b)γ_{ab}ψ.
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Duality-covariant particles and exotic branes
A particle worldline in E8 exceptional field theory is made gauge-invariant by adding a coadjoint-orbit "duality charge", and the same Hamiltonian framework organizes exotic zero-brane dynamics such as the 0^(1,7) brane.
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Heterotic Black Holes in Duality-Invariant Formalism
The work analyzes the dual geometry of charged black holes in a T-duality invariant heterotic string theory in two dimensions and extends a prior non-perturbative solution to multiple abelian gauge fields.
- Local symmetry and the dependence on extended spacetime