98 citations · 379 across the 13 of their papers we have counts for
3 papers · 1 filter
U(1) x U(1) Quaternionic Metrics from Harmonic Superspace
Pierre-Yves Casteill, Evgeny Ivanov, Galliano Valent
We construct, using harmonic superspace and the quaternionic quotient approach, a quaternionic-Kähler extension of the most general two centres hyper-Kähler metric. It possesses $U…
Quaternionic Extension of the Double Taub-NUT Metric
Pierre-Yves Casteill, Evgeny Ivanov, Galliano Valent
Starting from the generic harmonic superspace action of the quaternion-Kähler sigma models and using the quotient approach we present, in an explicit form, a quaternion-Kähler exte…
Dualised sigma-models at the two-loop order
G. Bonneau, P. Y. Casteill
We adress ourselves the question of the quantum equivalence of non abelian dualised $\si$-models on the simple example of the T-dualised $SU(2) \si$-model. This theory is classical…