Spacetime fermions in light-cone gauge superstring field theory and dimensional regularization

Journal of High Energy Physics volume 2011, Article number: 90 (2011) Cite this article

Abstract

We consider the dimensional regularization of the light-cone gauge type II superstring field theories in the NSR formalism. In the previous work, we have calculated the tree-level amplitudes with external lines in the (NS, NS) sector using the regularization and shown that the desired results are obtained without introducing contact term interactions. In this work, we study the tree-level amplitudes with external lines in the Ramond sector. In order to deal with them, we propose a worldsheet theory to be used instead of that for the naive dimensional regularization. With the worldsheet theory, we regularize and define the tree-level amplitudes by analytic continuation. We show that the results coincide with those of the first quantized formulation.

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Affiliations

  1. Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki, 305-8571, Japan

    Nobuyuki Ishibashi

  2. Okayama Institute for Quantum Physics, Kyoyama 1-9-1, Kita-ku, Okayama, 700-0015, 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:1103.2220

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Ishibashi, N., Murakami, K. Spacetime fermions in light-cone gauge superstring field theory and dimensional regularization. J. High Energ. Phys. 2011, 90 (2011). https://doi.org/10.1007/JHEP07(2011)090

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Keywords

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