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High Energy Physics - Theory, hep-th
Abstract:
The supersymmetrization of curvature squared terms is important in the study
of the low energy limit of compactified superstrings where a distinguished role
is played by the Gauss-Bonnet combination, which is ghost-free. In this letter,
we construct its off-shell ${\cal N} = (1, 0)$ supersymmetrization in six
dimensions for the first time. By studying this invariant together with the
supersymmetric Einstein-Hilbert term we confirm and extend known results of the
$\alpha'$-corrected string theory compactified to six dimensions. Finally, we
analyze the spectrum about the ${\rm AdS}_3\times{\rm S}^3$ solution.
