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Moduli-Induced Vacuum Destabilisation
Joseph P. Conlon, Francisco G. Pedro
We look for ways to destabilise the vacuum. We describe how dense matter environments source a contribution to moduli potentials and analyse the conditions required to initiate eit…
Kinetic mixing of U(1)s for local string models
Mathew Bullimore, Joseph P. Conlon, Lukas T. Witkowski
We study kinetic mixing between massless U(1)s in toroidal orbifolds with D3-branes at orbifold singularities. We focus in particular on C^3/Z_4 singularities but also study C^3/Z_…
Anomaly Mediation in Superstring Theory
Joseph P. Conlon, Mark Goodsell, Eran Palti
We study anomaly mediated supersymmetry breaking in type IIB string theory and use our results to test the supergravity formula for anomaly mediated gaugino masses. We compute 1-lo…
One-loop Yukawa Couplings in Local Models
Joseph P. Conlon, Mark Goodsell, Eran Palti
We calculate the one-loop Yukawa couplings and threshold corrections for supersymmetric local models of branes at singularities in type IIB string theory. We compute the correction…
Moduli Redefinitions and Moduli Stabilisation
Joseph P. Conlon, Francisco G. Pedro
Field redefinitions occur in string compactifications at the one loop level. We review arguments for why such redefinitions occur and study their effect on moduli stabilisation and…