“…We study the BPS states of non-critical strings which arise for zero size instantons of exceptional groups. This is accomplished by using F-theory and M-theory duals and by employing mirror symmetry to compute the degeneracy of membranes wrapped around 2-cycles of the Calabi-Yau threefold. …”
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“…We study moduli stabilization in the context of M-theory on compact manifolds with G2 holonomy, using superpotentials from flux and membrane instantons, and recent results for the Khaeler potential of such models. …”
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“…The tensile strengths of nickel–iron foam/epoxy interpenetrated phase composites in three different sizes and their constituent phases were measured, and it was shown in the results that the composite of three-dimensional network interpenetration with high-strength foam metal and epoxy resin formed a weak surface inside the material, and did not significantly improve the tensile strength of the composites. The tensile instantonal equations and damage instantonal equations of nickel–iron foam/epoxy interpenetrated phase composites were predicted by the method of inversion, and the applicability and high accuracy of the tensile intrinsic model were verified in comparison with the measured results.…”
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“…The result we find - obtained using localization techniques - captures all perturbative quantum corrections as well as non-perturbative effects due to instantons and monopoles, which are supported at the north pole, south pole and equator of S^4. …”
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“…We study such monopole bubbling indices and find an interesting connection to the Hilbert series of the moduli space of instantons on an auxiliary ALE space.…”
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“…We explain the logic behind this modification for a larger class of models and then analyse in detail the dynamics of two five-dimensional dyonic instantons, using both analytical and numerical techniques. …”
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“…These gauge bosons, that don't exist in six dimensions, co-exist with those originating from small instantons shrinking to zero size.…”
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“…In two examples we discuss in details, this background field is identified with the field of BPST instantons in the flat and Taub-NUT spaces.…”
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“…In two examples we discuss in details, this background field is identified with the field of BPST instantons in the flat and Taub-NUT spaces.…”
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“…We show how flat coordinates can be intrinsically defined in the Landau-Ginzburg model, and derive the A-model partition function counting disk instantons that stretch between three D-branes. In mathematical terms, this amounts to computing the simplest Fukaya product m_2 from the LG mirror theory. …”
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“…This summary of the working group 2 of DIS 2000 encompasses experimental and theoretical results of jet physics, open and bound state heavy flavour production, prompt photon production, next-to-leading order QCD calculations and beyond, instantons, fragmentation, event shapes, and power corrections, primarily from deep-inelastic scattering and photoproduction at HERA, but also from the LEP and Tevatron colliders.…”
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“…We consider color confinement, chiral symmetry breaking, and the properties of QCD at finite temperature, as the f We include discussions on the roles of instantons to hadron physics. We also provide ideas of critical experiments at medium to higher energies to identify the mechanism of color confinement and chiral symmetry breaking.…”
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“…We also consider the Landau-Ginzburg theory of the cubic torus where we show that the effective superpotential, given by the partition function, is consistent with the one obtained by summing up disk instantons in the mirror A-model. This is done by explicitly constructing the open-string mirror map.…”
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“…Finally, we elaborate on the connection to the dual heterotic and M-theory description, in which our configurations are interpreted as generalizations of discrete holonomy instantons.…”
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“…These are nonperturbative QCD; anomalies and instantons; the physics of nonspontaneous symmetry breaking; imaginary masses and Higgs bosons; the physics of 43 dimensions (part of this is supersymmetry); flavour mixing in the quark sector; flavour mixing in the leptonic sector; missing mass in the Universe; hierarchy problem; physics at the Planck scale and the number of expanded dimensions. (6 refs).…”
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“…Finally, the non-perturbative corrections are of the expected form, namely, they can be interpreted as arising from single D-instantons of multiple charge.…”
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“…Apart from the 25-th anniversary of the first appearance of the Polyakov's String theory, this conference, to our mind, might be also thought of as a 35 years from the discovery of the Conformal Invariance, 30 years of the Monopole and the Instantons and, finally, as the 20-th anniversary of the CFT. …”
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“…Through the use of topological arguments we clarify the physics behind this large-distance confinement and identify the instantons of the brane world-volume theory that are responsible for its appearance. …”
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“…We find that this is possible if the Kähler potential is modified by a term that has the form of NS5-brane instantons, leading to an appropriate inflationary plateau around the maximum of the scalar potential, depending on two extra parameters. …”
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“…This is achieved by suspending the original p-brane--p-antibrane pair between two (p+2)-branes, and describing its dynamics in terms of the worldvolume gauge theory on the spectator (p+2)-branes. Instantons, monopoles, sphalerons and their higher-dimensional generalizations in this worldvolume gauge theory correspond to stable (BPS) and unstable (non-BPS) branes in string theory. …”
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