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Showing 1 to 20 of 22 for “"Landau-Ginzburg"”.
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Monopoles and Landau-Ginzburg Models
… ends. We exploit the framework of the gauged Landau-Ginzburg models to address two model problems for the (perturbed) Seiberg-Witten moduli spaces on either C x Σ or H²₊ x Σ, where Σ is any compact Riemann surface of genus ≥ 1. These results will lead eventually to the compactness theorem in …
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Aspects of Topological Sigma Models
… sigma models1 is. Additionally, A-twisted Landau-Ginzburg models---twisted nonlinear sigma models with superpotentials---are analyzed and related via renormalization group flow to correlation functions in topological conformal field theories. In particular, the methods may well shed light …
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Applications of gauged linear sigma models
… E_8. We explicitly computed the proposed mirror Landau-Ginzburg orbifold and derived the Coulomb ring relations (the analogue of quantum cohomology ring relations). We also studied pure gauge theories, and provided evidence (at the level of these topologicalfield-theory-type computations) that …
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Supersymmetric Backgrounds in string theory
… certain branched-double-cover constructions in Landau-Ginzburg models can be extended to higher covers.
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Homological mirror symmetry for a Calabi-Yau hypersurface in projective space
… pair of pants is conjectured to be mirror to the Landau-Ginzburg model (Cn+2 , W), where W = z1...zn+2 We construct an immersed Lagrangian sphere in the pair of pants, and show that its endomorphism A.. algebra in the Fukaya category is quasi-isomorphic to the endomorphism dg algebra of the …
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Some aspects of the mass deformed ABJM theory
… an embedding of the 3-dimensional relativistic Landau-Ginzburg model for condensed matter systems in an N = 6, U(N) × U(N) Chern-Simons-matter theory (the ABJM model) by consistently truncating the latter to an abelian effective field theory encoding the collective dynamics of O(N) of the O(N²) …
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Floer cohomology in the mirror of the projective plane and a binodal cubic curve
… a family of Lagrangian submanifolds in the Landau-Ginzburg mirror to the projective plane equipped with a binodal cubic curve as anticanonical divisor. These objects correspond under mirror symmetry to the powers of the twisting sheaf 0(1), and hence their Floer cohomology groups form an …
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A Numerical Investigation Of The Canonical Duality Method For Non-Convex Variational Problems
… version of Ericksen's bar and a problem of Landau-Ginzburg type. The canonical duality theory is investigated numerically and compared with classic methods of numerical nature. Both advantages and shortcomings of the canonical duality theory are discussed. A major component of this critical …
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Thermal conductivity of superconducting tin films in a magnetic field
… 18% to 85% of the bulk coherence 1ength Eo. The Landau-Ginzburg parameter x o was sufficiently enhanced by the effect of the.short mean free paths that in our thicker films we were able to observe the surface. sheath region of de Gennes and Saint James. We have derived an expression for the field …
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Moduli Space of (0,2) Conformal Field Theories
… a class of (2,2) SCFTs obtained by fibering a Landau-Ginzburg (LG) orbifold CFT over a compact K\"ahler base manifold. While such models are naturally obtained as phases in a gauged linear sigma model (GLSM), our construction is independent of such an embedding. We discuss the general …
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A Study on Heterotic Target Space Duality – Bundle Stability/Holomorphy, F-theory and LG Spectra
… a simple phenomenon alone. Finally, we consider Landau-Ginzburg (LG) phases of TSD theories and explore their massless spectrum. In particular, we investigate TSD pairs involving geometric singularities. We study resolutions of these singularities and their relationship to the duality.
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Influence de la fluidité du béton frais sur les propriétés mécaniques du béton durci
… Ensuite, le formalisme de la fonctionnelle de Landau-Ginzburg fermionique est appliqué au problème de la stabilité du système de liquides de Luttinger couplés cinétiquement. On considère successivement la stabilité à la cohérence à une et à deux particules ainsi que l'influence du champ …
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Finite and infinite matrix product states for Gutzwiller projected mean-field wavefunctions and their applications to quantum spin systems
… that cannot be understood in the context of Landau-Ginzburg order parameters. With few exceptions, 2D analytical calculations are not well controlled. Therefore, numerical procedures are essential to test theories and analytical calculations. Moreover, efficient numerical procedures can be …
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Geometric structures on the target space of Hamiltonian evolution equations
… deformations of the rational superpotential/ Landau-Ginzburg construction of solutions of the WDVV equations. arXiv:math-ph/0605078, 2006], which was joint work with Ian Strachan. It is to appear in Communications in Mathematical Physics, and is original except for Section 4.1. It is concerned …
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Impact of the interface on the paraelectric to ferroelectric phase transition in expitaxial BaSrTiO 3 thin film capacitors
… theoretically using the approach of a modified Landau-Ginzburg-Devonshire theory of the ferroelectric phase transition. In addition to the influence of the misfit dislocation and its contribution to the strain in the films, also an impact of the depolarizing field will be considered, such that …
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Wärmeleitfähigkeit von 4 He in der Nähe des superfluiden Phasenübergangs in begrenzter Geometrie
… with the description of statics by the Landau-Ginzburg-Wilson functional. The calculation is done in first order of perturbation theory at fixed dimension d and infinite cutoff. Model F is used for the dynamical system. First, the specific heat is calculated for cylindrical and plate …
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Low Field Microwave Absorption in Nano-Magnetic Participle - incorporated YBa2Cu3O7-z Superconducting Materials
… major milestones, such as the London theory, the Landau-Ginzburg theory, and the BCS theory. The extreme challenge to predict the occurrence of SC is symbolized by the long string of unanticipated but breathtaking advances, i.e., the unexpected discoveries of cuprates and Fe-pnictides being the …
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Strain-phase relations in lead-free ferroelectric KxNa1-xNbO3 epitaxial films for domain engineering
… calculated for potassium niobate by means of the Landau-Ginzburg-Devonshire (LDG) theory with major accuracy compared to existing predictions. The result manifests a diversity of different, mainly monoclinic phases for KNbO3. By means of the calculated misfit strain-phase diagram, particular …
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New perspectives on fractional quantum Hall physics
… these dualities can be used to construct bosonic Landau-Ginzburg theories of the Read-Rezayi and generalized non-Abelian spin singlet states by introducing interlayer interactions in a multilayer Abelian FQH system. Next, we extend this construction in Chapter 5 to develop a field theory and …
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The electronic structure of the pair-density-wave (PDW) superconductor in the cuprates
… and arises from a quartic interaction in the Landau-Ginzburg expansion locking the coexisting superconducting phase fields together. A far field approximation will be adopted to illustrate the qualitative effects of the uniform order, paying special attention to this locking of phases. One …
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