Duality twists, orbifolds, and fluxes | Zendy

Atish Dabholkar | Zendy; C.M. Hull | Zendy

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Duality twists, orbifolds, and fluxes

Author(s) -

Atish Dabholkar,

C.M. Hull

Publication year - 2003

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2003/09/054

Subject(s) - orbifold , twist , duality (order theory) , moduli space , string theory , conjugacy class , t duality , string duality , string (physics) , pure mathematics , group (periodic table) , physics , mathematics , theoretical physics , mathematical physics , relationship between string theory and quantum field theory , quantum mechanics , geometry , quantum gravity , quantum

We investigate compactifications with duality twists and their relation toorbifolds and compactifications with fluxes. Inequivalent compactifications areclassified by conjugacy classes of the U-duality group and result in gaugedsupergravities in lower dimensions with nontrivial Scherk-Schwarz potentials onthe moduli space. For certain twists, this mechanism is equivalent tointroducing internal fluxes but is more general and can be used to stabilizesome of the moduli. We show that the potential has stable minima with zeroenergy precisely at the fixed points of the twist group. In string theory, whenthe twist belongs to the T-duality group, the theory at the minimum has anexact CFT description as an orbifold. We also discuss more general twists bynonperturbative U-duality transformations.Comment: 30 pages, harvmac, references and brief comments on gauged supergravity adde

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