Quantum tunneling in flux compactifications
Abstract
We identify instantons representing vacuum decay in a 6dimensional toy model for string theory flux compactifications, with the two extra dimensions compactified on a sphere. We evaluate the instanton action for tunneling between different flux vacua, as well as for the decompactification decay channel. The bubbles resulting from flux tunneling have an unusual structure. They are bounded by twodimensional branes, which are localized in the extra dimensions. This has important implications for bubble collisions.
 Publication:

Journal of Cosmology and Astroparticle Physics
 Pub Date:
 December 2009
 DOI:
 10.1088/14757516/2009/12/006
 arXiv:
 arXiv:0904.3106
 Bibcode:
 2009JCAP...12..006B
 Keywords:

 High Energy Physics  Theory
 EPrint:
 40 pages, 8 figures