Results 1 to 10 of about 287 (166)

Heterotic quantum cohomology

open access: yesJournal of High Energy Physics, 2022
It is believed, but not demonstrated, that the large radius massless spectrum of a heterotic string theory compactified to four-dimensional Minkowski space should obey equations that split into ‘F-terms’ and ‘D-terms’ in ways analogous to that of four ...
Jock McOrist, Eirik Eik Svanes
doaj   +5 more sources

AI-Driven Defect Engineering for Advanced Thermoelectric Materials. [PDF]

open access: yesAdv Mater
This review presents how AI accelerates the design of defect‐tuned thermoelectric materials. By integrating machine learning with high‐throughput data and physics‐informed representations, it enables efficient prediction of thermoelectric performance from complex defect landscapes.
Fu CL   +9 more
europepmc   +2 more sources

Exactly solvable lattice Hamiltonians and gravitational anomalies

open access: yesSciPost Physics, 2023
We construct infinitely many new exactly solvable local commuting projector lattice Hamiltonian models for general bosonic beyond group cohomology invertible topological phases of order two and four in any spacetime dimensions, whose boundaries are ...
Yu-An Chen, Po-Shen Hsin
doaj   +1 more source

Gravitational Quantum Cohomology [PDF]

open access: yesInternational Journal of Modern Physics A, 1997
We discuss how the theory of quantum cohomology may be generalized to "gravitational quantum cohomology" by studying topological σ models coupled to two-dimensional gravity. We first consider σ models defined on a general Fano manifold M (manifold with a positive first Chern class) and derive new recursion relations for its two-point functions.
Eguchi, Tohru   +2 more
openaire   +2 more sources

Cohomology of Effect Algebras [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2017
We will define two ways to assign cohomology groups to effect algebras, which occur in the algebraic study of quantum logic. The first way is based on Connes' cyclic cohomology. The resulting cohomology groups are related to the state space of the effect
Frank Roumen
doaj   +1 more source

Quantum groups and quantum cohomology [PDF]

open access: yesAstérisque, 2019
In this paper, we study the classical and quantum equivariant cohomology of Nakajima quiver varieties for a general quiver Q. Using a geometric R-matrix formalism, we construct a Hopf algebra Y_Q, the Yangian of Q, acting on the cohomology of these varieties, and show several results about their basic structure theory.
Maulik, D, Okounkov, A
openaire   +3 more sources

Superconformal quantum mechanics and growth of sheaf cohomology

open access: yesJournal of High Energy Physics, 2023
We give a geometric interpretation for superconformal quantum mechanics defined on a hyper-Kähler cone which has an equivariant symplectic resolution. BPS states are identified with certain twisted Dolbeault cohomology classes on the resolved space and ...
Nick Dorey, Boan Zhao
doaj   +1 more source

On quantum obstruction spaces and higher codimension gauge theories

open access: yesPhysics Letters B, 2021
Using the quantum construction of the BV-BFV method for perturbative gauge theories, we show that the obstruction for quantizing a codimension 1 theory is given by the second cohomology group with respect to the boundary BRST charge. Moreover, we give an
Nima Moshayedi
doaj   +1 more source

Quantum cohomology as a deformation of symplectic cohomology

open access: yesJournal of Fixed Point Theory and Applications, 2022
AbstractWe prove that under certain conditions, the quantum cohomology of a positively monotone compact symplectic manifold is a deformation of the symplectic cohomology of the complement of a simple crossings symplectic divisor. We also prove rigidity results for the skeleton of the divisor complement.
Borman, Matthew Strom   +2 more
openaire   +5 more sources

Maximal Newton polygons via the quantum Bruhat graph [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
This paper discusses a surprising relationship between the quantum cohomology of the variety of complete flags and the partially ordered set of Newton polygons associated to an element in the affine Weyl group.
Elizabeth T. Beazley
doaj   +1 more source

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