Monodromy Charge in D7-brane Inflation

Dec 9, 2018
32 pages
Published in:
  • JHEP 10 (2020) 060
  • Published: Oct 9, 2020
e-Print:

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Abstract: (Springer)
In axion monodromy inflation, traversing N axion periods corresponds to discharging N units of a quantized charge. In certain models with moving D7-branes, such as Higgs-otic inflation, this monodromy charge is D3-brane charge induced on the D7-branes. The stress-energy of the induced charge affects the internal space, changing the inflaton potential and potentially limiting the field range. We compute the backreaction of induced D3-brane charge in Higgs-otic inflation. The effect on the nonperturbative superpotential is dramatic even for N = 1, and may preclude large-field inflation in this model in the absence of a mechanism to control the backreaction.
Note:
  • 31 pages
  • D-branes
  • Flux compactifications
  • monodromy: charge
  • D-brane: 7
  • inflation
  • axion
  • back reaction
  • superpotential: nonperturbative
  • inflaton: potential
  • charge: induced