arXiv subjects

Evgeny Ivanov

Publications and source records attributed to Evgeny Ivanov.

75 records · Page 5Linked to original sources

arXiv1998

Harmonic Space Construction of the Quaternionic Taub-NUT metric

We present details of the harmonic space construction of a quaternionic extension of the four-dimensional Taub-NUT metric. As the main merit of the harmonic space approach, the metric is obtained in an explicit form following a generic set of rules. It exhibits $SU(2)\times U(1)$ isometry group and depends on two parameters, Taub-NUT `mass' and the cosmological constant. We consider several limiting cases of interest which correspond to special choices of the involved parameters.

hep-th↗

arXiv1998

Quaternionic Taub-NUT from the harmonic space approach

We use the harmonic space technique to construct explicitly a quaternionic extension of the Taub-NUT metric. It depends on two parameters, the first being the Taub-NUT `mass' and the second one the cosmological constant.

hep-th↗

arXiv1998

Modifying N=2 Supersymmetry via Partial Breaking

We study realization of N=2 SUSY in N=2 abelian gauge theory with electric and magnetic $FI$ terms within a manifestly supersymmetric formulation. We find that after dualization of even one $FI$ term N=2 SUSY is realized in a partial breaking mode off shell. In the case of two $FI$ terms, this regime is preserved on shell. The N=2 SUSY algebra is shown to be modified on gauge-variant objects.

hep-th↗