Results 91 to 100 of about 316 (182)

Enlargement of Symmetry Groups in Physics: A Practitioner’s Guide

open access: yesUniverse
Wigner’s classification has led to the insight that projective unitary representations play a prominent role in quantum mechanics. The physics literature often states that the theory of projective unitary representations can be reduced to the theory of ...
Lehel Csillag   +2 more
doaj   +1 more source

Topological Insulators from Group Cohomology

open access: yesPhysical Review X, 2016
We classify insulators by generalized symmetries that combine space-time transformations with quasimomentum translations. Our group-cohomological classification generalizes the nonsymmorphic space groups, which extend point groups by real-space ...
A. Alexandradinata   +2 more
doaj   +1 more source

Quantum cohomology of blowups

open access: yes, 2023
69 pages, 5 figures, v2: corrected minor errors and added Appendix B, v3: major revision; the main result has been strengthened by eliminating the variables x and y; the initial condition for the decomposition has been clarified; a discussion on the well-definedness of the pullbacks of quantum D-modules has been ...
openaire   +2 more sources

Kodaira-Spencer maps for elliptic orbispheres as isomorphisms of Frobenius algebras

open access: yesOpen Mathematics
Given a mirror pair of a symplectic manifold X and a Landau-Ginzburg potential W, we are interested in whether the quantum cohomology of X and the Jacobian algebra of W are isomorphic.
Lee Sangwook
doaj   +1 more source

Coordinate rings of regular nilpotent Hessenberg varieties in the open opposite schubert cell

open access: yesForum of Mathematics, Sigma
Dale Peterson has discovered a surprising result that the quantum cohomology ring of the flag variety $\operatorname {\mathrm {GL}}_n({\mathbb {C}})/B$ is isomorphic to the coordinate ring of the intersection of the Peterson variety ...
Tatsuya Horiguchi, Tomoaki Shirato
doaj   +1 more source

Orbifold Quantum Cohomology

open access: yes, 2000
Revised version, adding more ...
Chen, Weimin Chen, Ruan, Yongbin
openaire   +2 more sources

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