You have just completed your registration at OpenAire.
Before you can login to the site, you will need to activate your account.
An e-mail will be sent to you with the proper instructions.
Important!
Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version
of the site upon release.
A procedure for computing the dimensions of the moduli spaces of reducible, holomorphic vector bundles on elliptically fibered Calabi-Yau threefolds X is presented. This procedure is applied to poly-stable rank n+m bundles of the form V + pi* M, where V is a stable vector bundle with structure group SU(n) on X and M is a stable vector bundle with structure group SU(m) on the base surface B of X. Such bundles arise from small instanton transitions involving five-branes wrapped on fibers of the elliptic fibration. The structure and physical meaning of these transitions are discussed.
[1] P. Horava and E. Witten, “Heterotic and Type I String Dynamics from Eleven Dimensions,” Nucl. Phys. B460, 506 (1996) [hep-th/9510209]. P. Horava and E. Witten, “Eleven-Dimensional Supergravity on a Manifold with Boundary,” Nucl. Phys. B475, 94 (1996) [hep-th/9603142].
[13] R. Donagi, B. A. Ovrut, T. Pantev and D. Waldram, “Standard model vacua in heterotic M-theory,” arXiv:hep-th/0001101.
[14] R. Donagi, B. A. Ovrut, T. Pantev and D. Waldram, “Standard-model bundles on non-simply connected Calabi-Yau threefolds,” JHEP 0108, 053 (2001) [arXiv:hep-th/0008008].
[15] R. Donagi, B. A. Ovrut, T. Pantev and D. Waldram, “Standard-model bundles,” Adv.Theor.Math.Phys. 5 (2002) 563-615, math.AG/0008010.
[17] B. A. Ovrut, T. Pantev and R. Reinbacher, “Invariant homology on standard model manifolds,” arXiv:hep-th/0303020.
[18] R. Donagi, B. A. Ovrut, T. Pantev and R. Reinbacher, “SU (4) Instantons on CalabiYau Threefolds with Z2 × Z2 Fundamental Group,” to appear.
[19] E. Witten, “Small Instantons in String Theory,” Nucl. Phys. B460, 541 (1996) [hep-th/9511030].