Aspects of Duality in N=2 String Vacua

TL;DR

This paper provides additional evidence for the duality between N=2 heterotic and type II string vacua, extending previous analysis to gauge sectors and one-loop gravitational couplings, supporting the proposed duality in specific models.

Contribution

It extends the analysis of N=2 string duality to include gauge sectors and gravitational couplings, strengthening the evidence for the duality conjecture.

Findings

Duality holds for gauge sectors in the specific model.

Duality also applies to one-loop gravitational couplings.

Supports the proposed N=2 string vacua duality in the studied case.

Abstract

We collect further evidence for the proposed duality between $N=2$ heterotic and type II string vacua in a specific model suggested by Kachru and Vafa. In the gauge sector the previous analysis is extended; it is further shown that the duality also holds for the one--loop gravitational couplings to the vector multiplets.