We study the BPS spectrum of Little String Theory for bound states of M5-branes wrapped on six manifold of product topology M4 × Σ2 and the apparence of multi-loop θ-functions in a supersymmetric index calculation. We find a total reconstruction of the g-loop heterotic contribution in the case of a double K3 M-theory compactification. Moreover, we consider total wrapping of M5-branes on del Pezzo surfaces Bk and, by studying the relevant amplitude, we notice the arising of θ-functions relative to BPS strings on Tk−1, i.e. membranes on Tk. This happens because of beautiful relations between four dimensional SYM theories and CFTs in two dimensions and seems to be linked to a duality recently observed by A. Iqbal, A. Neitzke and C. Vafa in [1].

The M5-brane on K3 and del Pezzo's and multi-loop string amplitudes / Bonelli, G.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2001:12(2001), pp. 1-13. [10.1088/1126-6708/2001/12/022]

The M5-brane on K3 and del Pezzo's and multi-loop string amplitudes

Bonelli, G.
2001-01-01

Abstract

We study the BPS spectrum of Little String Theory for bound states of M5-branes wrapped on six manifold of product topology M4 × Σ2 and the apparence of multi-loop θ-functions in a supersymmetric index calculation. We find a total reconstruction of the g-loop heterotic contribution in the case of a double K3 M-theory compactification. Moreover, we consider total wrapping of M5-branes on del Pezzo surfaces Bk and, by studying the relevant amplitude, we notice the arising of θ-functions relative to BPS strings on Tk−1, i.e. membranes on Tk. This happens because of beautiful relations between four dimensional SYM theories and CFTs in two dimensions and seems to be linked to a duality recently observed by A. Iqbal, A. Neitzke and C. Vafa in [1].
2001
2001
12
1
13
022
https://arxiv.org/abs/hep-th/0111126
Bonelli, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/16803
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