Thesis
Supersymmetry breaking in 4D string theory
- Abstract:
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In this thesis we address the problem of supersymmetry breaking in four dimensional string theory. We derive an effective Lagrangian describing the low energy degrees of freedom including the Goldstone mode associated with the spontaneously broken R-symmetry when a gaugino condensate forms.
We show the equivalence between our approach and those previously used for studying gaugino condensate in 4D string theory but we also show the need to include quantum effects due to the strong coupling constant in the hidden sector.
We determine the vacuum structure of the complete scalar potential and show that supersymmetry is broken and a large mass hierarchy may develop with a single gaugino condensate. Realistic phenomenological values for the gauge coupling constant, unification scale and soft supersymmetric breaking terms can be obtained. Consistency with the minimal supersymmetric extension of the standard model requires the hidden gauge group to be SU(6) or SO(9).
Actions
- Publication date:
- 1993
- DOI:
- Type of award:
- DPhil
- Level of award:
- Doctoral
- Awarding institution:
- University of Oxford
- Language:
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English
- Subjects:
- UUID:
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uuid:0bc6b606-1a02-4d28-b68f-bd5c3ac11d04
- Local pid:
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td:602835288
- Source identifiers:
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602835288
- Deposit date:
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2013-01-21
Terms of use
- Copyright holder:
- Macorra, Axel de la
- Copyright date:
- 1993
- Notes:
- The digital copy of this thesis has been made available thanks to the generosity of Dr Leonard Polonsky
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