On the low-energy limit of superstring theories

Derendinger, Jean-Pierre; Ibáñez, Luis E.; Nilles, Hans Peter

doi:10.1016/0550-3213(86)90396-2

Cited by 274 publications

(161 citation statements)

References 48 publications

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“…The T field has no potential at the string tree level as well as to all orders in string perturbation. On the other hand it is known that nonperturbative stringy effects such as gaugino condensation [21] and axionic string instantons [3] give rise to nonperturbative superpotentials. Such potentials in turn preserve duality symmetry [22 ,10 ,11] .…”

Section: Modular Invariant Potentialmentioning

confidence: 99%

Static domain walls in N = 1 supergravity

1992

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We study supersymmetric domain walls in N=1 supergravity theories, including those with modular-invariant superpotentials arising in superstring compactifications. Such domain walls are shown to saturate the Bogomol'nyi bound of wall energy per unit area. We find static and reflection asymmetric domain wall solutions of the self-duality equations for the metric and the matter fields. Our result establishes a new class of domain walls beyond those previously classified.As a corollary, we define a precise notion of vacuum degeneracy in the supergravity theories.In addition, we found examples of global supersymmetric domain walls that do not have an analog when gravity is turned on. This result establishes that in the case of extended topological defects gravity plays a crucial, nontrivial role.

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Section: Modular Invariant Potentialmentioning

confidence: 99%

Static domain walls in N = 1 supergravity

1992

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“…In particular the constant term in the superpotential is not present in the many condensates case. It is actually more reminiscent of the original stringy gaugino condensation discussions with a constant term added from the antisymmetric tensor field [2]. The presence of this constant term has at least one important impact: after supersymmetry is broken, the scale of supersymmetry breaking is not exponentially supressed as compared to the string scale as in gaugino condensation models where M SU SY = M String e −b/g 2 .…”

Section: Discussionmentioning

confidence: 99%

“…Over the years there have been several proposals for generating a potential for the dilaton field [2,3,10,11,12,13,14,15,16]. The most successful so far has been the racetrack scenario where it is assumed that the hidden sector of string theory has a product group structure.…”

Section: Generalitiesmentioning

confidence: 99%

“…The racetrack scenario proposed in the 1980's [2,3,4], based on gaugino condensation for several hidden sector gauge groups, remains as the best option so far for generating a potential for the dilaton field, giving rise to a nontrivial minimum at weak coupling after fine tuning the ranks of the different gauge groups. In this scenario the dilaton field is stabilized at a supersymmetric point and the breaking of supersymmetry is usually achieved by the moduli fields.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The dilaton potential from

Font¹,

Klein²,

Quevedo³

2001

Nuclear Physics B

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Recent understanding of N = 1 * supersymmetric theory (mass deformed N = 4) has made it possible to find an exact superpotential which encodes the properties of the different phases of the theory. We consider this superpotential as an illustrative example for the source of a nontrivial scalar potential for the string theory dilaton and study its properties. The superpotential is characterized by the rank of the corresponding gauge group (N ) and integers p, q, k labelling the different massive phases of the theory. For generic values of these parameters, we find the expected runaway behaviour of the potential to vanishing string coupling.But there are also supersymmetric minima at weak coupling stabilizing the dilaton field. An interesting property of this potential is that there is a proliferation of supersymmetric vacua in the confining phases, with the number of vacua increasing with N and leading to a kind of staircase potential. For a range of parameters, it is possible to obtain realistic values for the gauge coupling.

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“…Therefore, we need to construct a seesaw type of model in a different way. Consistently with the philosophy adopted in our study of the charged fermion mass hierarchy we shall assume that also the seesaw mechanism is due to NR terms in the superpotential [16]. A minimal choice, as was discussed in ref.…”

Section: Non-renormalizable Terms Textures and The Quark Mass Hieramentioning

confidence: 99%