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hep-th2004
Dynamical Dimension Change in Supercritical String Theory
Simeon Hellerman, Xiao Liu
We study tree-level solutions to heterotic string theory in which the number of spacetime dimensions 10+n changes dynamically due to closed string tachyon condensation. Taking the…
hep-th2004
Beauty is Attractive: Moduli Trapping at Enhanced Symmetry Points
Lev Kofman, Andrei Linde, Xiao Liu +3
We study quantum effects on moduli dynamics arising from the production of particles which are light at special points in moduli space. The resulting forces trap the moduli at thes…
hep-th2003
Heterotic Moduli Stabilization with Fractional Chern-Simons Invariants
Sergei Gukov, Shamit Kachru, Xiao Liu +1
We show that fractional flux from Wilson lines can stabilize the moduli of heterotic string compactifications on Calabi-Yau threefolds. We observe that the Wilson lines used in GUT…