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Multiloop amplitudes of light-cone gauge superstring field theory: odd spin structure contributions

Journal of High Energy Physics volume 2018, Article number: 63 (2018) Cite this article

Abstract

We study the odd spin structure contributions to the multiloop amplitudes of light-cone gauge superstring field theory. We show that they coincide with the amplitudes in the conformal gauge with two of the vertex operators chosen to be in the pictures different from the standard choice, namely (−1, −1) picture in the type II case and −1 picture in the heterotic case. We also show that the contact term divergences can be regularized in the same way as in the amplitudes for the even structures and we get the amplitudes which coincide with those obtained from the first-quantized approach.

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Affiliations

  1. Tomonaga Center for the History of the Universe, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan

    Nobuyuki Ishibashi

  2. National Institute of Technology, Kushiro College, Otanoshike-Nishi 2-32-1, Kushiro, Hokkaido, 084-0916, Japan

    Koichi Murakami

Authors
  1. Nobuyuki Ishibashi
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  2. Koichi Murakami
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Correspondence to Koichi Murakami.

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ArXiv ePrint: 1712.09049

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Ishibashi, N., Murakami, K. Multiloop amplitudes of light-cone gauge superstring field theory: odd spin structure contributions. J. High Energ. Phys. 2018, 63 (2018). https://doi.org/10.1007/JHEP03(2018)063

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Keywords

  • String Field Theory
  • BRST Quantization
  • Conformal Field Models in String Theory
  • Superstrings and Heterotic Strings