On one-loop corrected dilaton action in string theory

May 14, 2023
60 pages
Published in:
  • Adv.Theor.Math.Phys. 27 (2023) 7, 1965-2044
  • Published: 2023
e-Print:
Report number:
  • MIT-CTP/5552

Citations per year

202220232024053
Abstract: (International Press)
This manuscript concerns string one-loop corrections to the Kähler potential in 4d N=1\mathcal{N} = 1 vacua of string theories, and it largely consists of two parts. In the first part, we compute the string one-loop correction to the dilaton kinetic term in heterotic string theories, and we show that the dilaton kinetic term is not renormalized at one-loop. This result agrees with the background field method studied by Kiritsis and Kounnas. After reviewing the well-known result on the string one-loop correction to the Kähler potential in heterotic string theories, we explain how this result can be reconciled with the known result on the Kähler potential in heterotic string theory. In the second part, we study the dilaton dependence of the one-loop corrected Kähler potential in type II string theories. To do so, we compute the string one-loop correction to the kinetic action of the 4d‑dilaton in type II string theories compactified on orientifolds of Calabi–Yau threefolds. We find that the string oneloop corrected 4d‑dilaton kinetic term is determined by the Witten index and the new supersymmetric index of the string worldsheet CFT.
Note:
  • v2: 59 pages. It was found that even at the four fermi level, vertex collisions can generate an enhancement by the factor of 1/delta. Such corrections are correctly included in the computation. v3: typos fixed. v4: Typos fixed, discussions expanded
  • potential: Kaehler
  • orientifold: Calabi-Yau
  • string model: vacuum state
  • dilaton
  • kinetic
  • Witten index
  • supersymmetry: 1
  • correction: quantum
  • effective action