Hypertriton Electric Polarizability

A rigorous formalism for determining the electric dipole polarizability of a threehadron bound complex in the case that the system has only one bound (ground) state has been elaborated. On its basis, by applying a model wave function that takes into account specific features of the structure of the lightest hypernucleus and using the known low-energy experimental data for the p − n and Λ − d systems as input data, we have calculated the value of the electric dipole polarizability of the lambda hypertriton αE( 3 Λ H). It follows from our study that the polarizability of the lambda hypertriton is close to 3 fm exceeding the polarizabilities of the ordinary three-nucleon nuclei by an order of magnitude.