Holomorphic fermions in $\text{AdS}_{2}$

Abstract

On two-dimensional Anti-de Sitter space, Majorana fermions with a discrete set of finely tuned, non-zero mass parameters possess conserved spinor--tensors that are symmetric and traceless. In complex coordinates, these correspond to pairs of holomorphic and anti-holomorphic half-integer spin currents and admit Laurent series mode expansions reminiscent of standard two-dimensional conformal field theories. We exploit this fact in order to fully parameterise the classical phase space associated with the equation of motion in terms of arbitrary (anti-)holomorphic functions. We further show that this parameterisation can be written covariantly in terms of a conformal Killing spinor--tensor, hinting at a hidden conformal symmetry. We also show they possess chiral algebras which are strict subalgebras of the one present in the corresponding theory on flat space.