Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-08-16
Nucl.Phys.B791:175-191,2008
Physics
High Energy Physics
High Energy Physics - Theory
26 pages, latex, v2 typos corrected
Scientific paper
10.1016/j.nuclphysb.2007.09.021
This paper describes the background field equations for strings in T-duality symmetric formalisms in which the dimension of target space is doubled and the sigma model supplemented with constraints. These are calculated by demanding the vanishing of the beta-functional of the sigma model couplings in the doubled target space. We demonstrate the equivalence with the background field equations of the standard string sigma model.
Berman David S.
Copland Neil B.
Thompson Daniel C.
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