Induced low-energy effective action in the 6D, N=(1,0) hypermultiplet theory on the vector multiplet background

TL;DR

This paper derives the complete finite low-energy effective action for a 6D, N=(1,0) hypermultiplet coupled to an Abelian vector multiplet, revealing a supersymmetric analog of the Heisenberg-Euler action.

Contribution

It introduces a superfield proper-time technique to compute the finite effective action in 6D, N=(1,0) supersymmetric theories, including all powers of the Maxwell field strength.

Findings

Derived the divergent part of the effective action.

Obtained the complete finite low-energy superfield effective action.

Showed the effective action contains all powers of the Maxwell field strength.

Abstract

We consider the six dimensional N=(1,0) hypermultiplet model coupled to an external field of the Abelian vector multiplet in harmonic superspace approach. Using the superfield proper-time technique we find the divergent part of the effective action and derive the complete finite induced low-energy superfield effective action. This effective action depends on external field and contains in bosonic sector all the powers of the constant Maxwell field strength. The obtained result can be treated as the 6D, N=(1,0) supersymmetric Heisenberg-Euler type effective action.