Real topological string amplitudes
نویسندگان
چکیده
منابع مشابه
Topological Amplitudes in String Theory
We show that certain type II string amplitudes at genus g are given by the topologi-cal partition function F g discussed recently by Bershadsky, Cecotti, Ooguri and Vafa. These amplitudes give rise to a term in the four-dimensional effective action of the form g F g W 2g , where W is the chiral superfield of N = 2 supergravitational multi-plet. The holomorphic anomaly of F g is related to non-l...
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Certain scattering amplitudes in the gravitational sector of type II string theory on K3 × T 2 are found to be computed by correlation functions of the N = 4 topological string. This analysis extends the already known results for K3 by Berkovits and Vafa, which correspond to six-dimensional terms in the effective action, involving four Riemann tensors and 4g − 4 graviphotons, R4T 4g−4, at genus...
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∗On leave from CPHT (UMR CNRS 7644) Ecole Polytechnique, F-91128 Palaiseau
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2017
ISSN: 1029-8479
DOI: 10.1007/jhep03(2017)080