Results 71 to 80 of about 8,805 (298)

On extended structures in affine Toda field theory [PDF]

open access: yes, 1996
Two areas of affine Toda field theory are explored in this thesis. First the introduction of a boundary into the real coupling affine Toda field theory.
Harder, Ulrich Karl Priedrich
core  

Emergent Topological Magnons and Thermal Hall Effect in 2D Filling‐Enforced Fully Compensated Ferrimagnets

open access: yesAdvanced Functional Materials, EarlyView.
Schematic illustration of ferroelectric‐intercalation‐driven transitions in magnetic configurations and magnonic topological phases, together with the symmetry relations of magnonic Berry curvature. ABSTRACT Magnons in collinear magnets with vanishing net magnetization offer unique advantages for spin transport, including ultrafast dynamics and ...
Yingxi Bai   +8 more
wiley   +1 more source

4d/2d Correspondence: Instantons and W-Algebras [PDF]

open access: yes, 2012
In this thesis, we study the 4d/2d correspondence of Alday-Gaiotto-Tachikawa, which relates the class of 4-dimensional N=2 gauge theories (theories of class S) to a 2-dimensional conformal field theory. The 4d gauge theories are obtained by compactifying
Song, Jaewon
core   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

open access: yesAdvanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben   +6 more
wiley   +1 more source

Fivebranes and 3-manifold homology

open access: yesJournal of High Energy Physics, 2017
Motivated by physical constructions of homological knot invariants, we study their analogs for closed 3-manifolds. We show that fivebrane compactifications provide a universal description of various old and new homological invariants of 3-manifolds.
Sergei Gukov, Pavel Putrov, Cumrun Vafa
doaj   +1 more source

Classical mechanics as a topological field theory [PDF]

open access: yesPhysics Letters B, 1990
Abstract We show that our recent formulation of classical mechanics via path integrals has many features in common with Witten's topological field theories. The action of the theory is a pure BRS commutator, which arises when we “gauge-fix” the symmetry of arbitrary deformations in path space.
GOZZI, ENNIO, REUTER M.
openaire   +2 more sources

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

open access: yesAdvanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk   +6 more
wiley   +1 more source

Topological strings, strips and quivers

open access: yesJournal of High Energy Physics, 2019
We find a direct relation between quiver representation theory and open topological string theory on a class of toric Calabi-Yau manifolds without compact four-cycles, also referred to as strip geometries.
Miłosz Panfil, Piotr Sułkowski
doaj   +1 more source

On the topological charges of the affine toda solitons [PDF]

open access: yes, 1994
This thesis investigates the two dimensional, integrable field theories known as the affine Toda field theories, which are based on the Kac-Moody algebras with zero central extension.
McGhee, William Alexander, McGhee, W.A
core  

On the faithfulness of 1-dimensional topological quantum field theories

open access: yes, 2020
This paper explores 1-dimensional topological quantum field theories. We separately deal with strict and strong 1-dimensional topological quantum field theories.
Telebaković Onić, Sonja   +1 more
core   +1 more source

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