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TUW0513 Constant Dilaton Vacua
, 2005
"... 2D dilaton (super)gravity contains a special class of solutions with constant dilaton, a kinklike solution connecting two of them was recently found in a specific model that corresponds to the KK reduced 3D ChernSimons term. Here we develop the systematics of such solutions in generalized 2D dila ..."
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2D dilaton (super)gravity contains a special class of solutions with constant dilaton, a kinklike solution connecting two of them was recently found in a specific model that corresponds to the KK reduced 3D ChernSimons term. Here we develop the systematics of such solutions in generalized 2D
NonKaehler Heterotic String Compactifications with nonzero fluxes and constant dilaton
, 2008
"... We construct new explicit compact valid solutions with nonzero field strength and constant dilaton to the heterotic string equations in dimension six. We present balanced Hermitian structures on compact nilmanifolds in dimension six satisfying the heterotic supersymmetry equations with nonzero f ..."
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Cited by 7 (3 self)
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We construct new explicit compact valid solutions with nonzero field strength and constant dilaton to the heterotic string equations in dimension six. We present balanced Hermitian structures on compact nilmanifolds in dimension six satisfying the heterotic supersymmetry equations with non
TUW0513 hepth/0509183 Constant Dilaton Vacua and Kinks in 2D (Super)Gravity
, 2005
"... 2D dilaton (super)gravity contains a special class of solutions with constant dilaton, a kinklike solution connecting two of them was recently found in a specific model that corresponds to the KK reduced 3D ChernSimons term. Here we develop the systematics of such solutions in generalized 2D dila ..."
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2D dilaton (super)gravity contains a special class of solutions with constant dilaton, a kinklike solution connecting two of them was recently found in a specific model that corresponds to the KK reduced 3D ChernSimons term. Here we develop the systematics of such solutions in generalized 2D
Ustiansky V., NonSingular Cosmological Models in String Gravity with Constant Dilaton and Second Order Curvature Corrections
"... Abstract. We investigate FRW cosmological solutions in the theory of modulus field coupled to gravity through a GaussBonnet term. The explicit analytical forms of nonsingular asymptotics are presented for powerlaw and exponentially steep modulus coupling functions. We study the influence of modulu ..."
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Cited by 1 (0 self)
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Abstract. We investigate FRW cosmological solutions in the theory of modulus field coupled to gravity through a GaussBonnet term. The explicit analytical forms of nonsingular asymptotics are presented for powerlaw and exponentially steep modulus coupling functions. We study the influence of modulus field potential on these asymptotical regimes and find some forms of the potential which do not destroy the nonsingular behavior. In particular, we obtain that exponentially steep coupling functions arising from the string theory do not allow nonsingular past asymptotic unless modulus field potential tends to zero for modulus field ψ → ±∞. Finally, the modification of the chaotic dynamics in the closed FRW universe due to presence of the GaussBonnet term is discussed. PACS numbers: 98.80.Cq, 98.80.Hw, 02.60.Lj 1.
Anomalous U(1) Vortices and The Dilaton
, 2000
"... The role of the (dynamical) dilaton in the vortices associated with the spontaneous breaking of an anomalous U(1) from heterotic string theory is examined. We demonstrate how the anomaly (and the coupling to the dilaton/axion) can appear in the Lagrangian and associated field equations as a controll ..."
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controlled perturbation about the standard NielsenOlesen equations. In such a picture, the additional field equation for the dilaton becomes a series of corrections to a constant dilaton vev as the anomaly is turned on. In particular we find that even the first nontrivial correction to a constant dilaton
Higherdimensional resolution of dilatonic black hole singularities
, 1995
"... We show that the fourdimensional extreme dilaton black hole with dilaton coupling constant a = √ p/(p + 2) can be interpreted as a completely nonsingular, nondilatonic, black pbrane in (4 + p) dimensions provided that p is odd. Similar results are obtained for multiblack holes and dilatonic ex ..."
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Cited by 120 (23 self)
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We show that the fourdimensional extreme dilaton black hole with dilaton coupling constant a = √ p/(p + 2) can be interpreted as a completely nonsingular, nondilatonic, black pbrane in (4 + p) dimensions provided that p is odd. Similar results are obtained for multiblack holes and dilatonic
Curved dilatonic braneworlds and the cosmological constant problem
, 2008
"... We construct a model for dilatonic brane worlds with constant curvature on the brane, i.e. a nonzero fourdimensional cosmological constant, given in function of the dilaton coupling and the cosmological constant of the bulk. We compare this family of solutions to other known dilatonic domain wall ..."
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We construct a model for dilatonic brane worlds with constant curvature on the brane, i.e. a nonzero fourdimensional cosmological constant, given in function of the dilaton coupling and the cosmological constant of the bulk. We compare this family of solutions to other known dilatonic domain wall
Vanishing of the Cosmological Constant, Stability of the Dilaton and Inflation
, 1995
"... We study the possibility of canceling the cosmological constant in supergravity string models. We show that with a suitable choice of superpotential the vacuum energy may vanish with the dilaton field at its minimum and supersymmetry broken with a large hierarchy. We derive the condition for which t ..."
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We study the possibility of canceling the cosmological constant in supergravity string models. We show that with a suitable choice of superpotential the vacuum energy may vanish with the dilaton field at its minimum and supersymmetry broken with a large hierarchy. We derive the condition for which
Modifications of The BTZ Black Hole by a Dilaton/Scalar
, 1996
"... We investigate the modifications of the static BTZ black hole solution due to a chosen asymptotically constant dilaton/scalar. New classes of static black hole solutions are obtained. Using quasilocal formalism, we calculate their mass for a finite spat ial region that contains the black hole. Their ..."
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Cited by 1 (0 self)
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We investigate the modifications of the static BTZ black hole solution due to a chosen asymptotically constant dilaton/scalar. New classes of static black hole solutions are obtained. Using quasilocal formalism, we calculate their mass for a finite spat ial region that contains the black hole
String Dilaton Fluid Cosmology
, 1998
"... We investigate (n + 1)dimensional stringdilaton cosmology with effective dilaton potential in presence of perfectfluid matter. We get exact solutions parametrized by the constant γ of the state equation p = (γ −1)ρ, the spatial dimension number n, the bulk of matter, and the spatial curvature con ..."
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We investigate (n + 1)dimensional stringdilaton cosmology with effective dilaton potential in presence of perfectfluid matter. We get exact solutions parametrized by the constant γ of the state equation p = (γ −1)ρ, the spatial dimension number n, the bulk of matter, and the spatial curvature
Results 1  10
of
3,939