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Non-tachyonic Scherk-Schwarz compactifications, cosmology and moduli stabilization | | E. Dudas
; C. Timirgaziu
; | | Date: |
26 Dec 2003 | | Journal: | JHEP 0403 (2004) 060 | | Subject: | hep-th | | Abstract: | It is well-known that Scherk-Schwarz compactifications in string theory have a tachyon in the closed string spectrum appearing for a critical value of a compact radius. The tachyon can be removed by an appropriate orientifold projection in type II strings, giving rise to tachyon-free compactifications. We present explicit examples of this type in various dimensions, including six and four-dimensional chiral examples, with softly broken supersymmetry in the closed sector and non-BPS configurations in the open sector. These vacua are interesting frameworks for studying various cosmological issues. We discuss four-dimensional cosmological solutions and moduli stabilization triggered by nonperturbative effects like gaugino condensation on D-branes and fluxes. | | Source: | arXiv, hep-th/0401201 | | Services: | Forum | Review | PDF | Favorites | |
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