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Publikováno v:
JHEP 1011:105,2010
We give an explicit realization of the "String Axiverse" discussed in Arvanitaki et. al \cite{Arvanitaki:2009fg} by extending our previous results on moduli stabilization in $M$ theory to include axions. We extend the analysis of \cite{Arvanitaki:200
Externí odkaz:
http://arxiv.org/abs/1004.5138
Publikováno v:
JHEP 1012:056,2010
We describe a simple and robust mechanism that stabilizes all Kahler moduli in Type IIB orientifold compactifications. This is shown to be possible with just one non-perturbative contribution to the superpotential coming from either a D3-instanton or
Externí odkaz:
http://arxiv.org/abs/1003.1982
Autor:
Bobkov, Konstantin
We show that there exists an exponentially large discretuum of vacua in $G_2$-compactifications of M-theory without flux. In M-theory-inspired $G_2$-MSSM, quantities relevant for particle physics remain virtually insensitive to large variations of th
Externí odkaz:
http://arxiv.org/abs/0906.5359
Autor:
Acharya, Bobby S., Bobkov, Konstantin
Publikováno v:
JHEP 1009:001,2010
The G2-MSSM is a model of particle physics coupled to moduli fields with interesting phenomenology both for colliders and astrophysical experiments. In this paper we consider a more general model - whose moduli Kahler potential is a completely arbitr
Externí odkaz:
http://arxiv.org/abs/0810.3285
Autor:
Acharya, Bobby S., Kumar, Piyush, Bobkov, Konstantin, Kane, Gordon, Shao, Jing, Watson, Scott
Publikováno v:
JHEP 0806:064,2008
We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G2-MSSM models arising from M theory compactifications, whic
Externí odkaz:
http://arxiv.org/abs/0804.0863
Publikováno v:
Phys.Rev.D78:065038,2008
We continue our study of the low energy implications of $M$ theory vacua on $G_2$ manifolds, undertaken in \cite{Acharya:2007rc,Acharya:2006ia}, where it was shown that the moduli can be stabilized and a TeV scale generated, with the Planck scale as
Externí odkaz:
http://arxiv.org/abs/0801.0478
Publikováno v:
Phys.Rev.D76:126010,2007
In a recent paper \cite{Acharya:2006ia} it was shown that in $M$ theory vacua without fluxes, all moduli are stabilized by the effective potential and a stable hierarchy is generated, consistent with standard gauge unification. This paper explains th
Externí odkaz:
http://arxiv.org/abs/hep-th/0701034
Publikováno v:
Phys.Rev.Lett.97:191601,2006
An old idea for explaining the hierarchy is strong gauge dynamics. We show that such dynamics {\it also} stabilises the moduli in $M$ theory compactifications on manifolds of $G_2$-holonomy {\it without} fluxes. This gives stable vacua with softly br
Externí odkaz:
http://arxiv.org/abs/hep-th/0606262
Autor:
Bobkov, Konstantin
Publikováno v:
JHEP 0505:010,2005
We consider the Type IIB string theory in the presence of various extra $7/\bar 7$-brane pairs compactified on a warped Calabi-Yau threefold that admits a conifold singularity. We demonstrate that the volume modulus can be stabilized perturbatively a
Externí odkaz:
http://arxiv.org/abs/hep-th/0412239