Results 21 to 30 of about 33,027 (196)

Quantum gravity from timelike Liouville theory

open access: yesJournal of High Energy Physics, 2019
A proper definition of the path integral of quantum gravity has been a long- standing puzzle because the Weyl factor of the Euclidean metric has a wrong-sign kinetic term.
Teresa Bautista   +2 more
doaj   +1 more source

Schwinger-Keldysh formalism. Part II: thermal equivariant cohomology

open access: yesJournal of High Energy Physics, 2017
Causally ordered correlation functions of local operators in near-thermal quantum systems computed using the Schwinger-Keldysh formalism obey a set of Ward identities.
Felix M. Haehl   +2 more
doaj   +1 more source

Wilson loop algebras and quantum K-theory for Grassmannians

open access: yesJournal of High Energy Physics, 2020
We study the algebra of Wilson line operators in three-dimensional N $$ \mathcal{N} $$ = 2 supersymmetric U(M ) gauge theories with a Higgs phase related to a complex Grassmannian Gr(M, N ), and its connection to K-theoretic Gromov-Witten invariants for ...
Hans Jockers   +3 more
doaj   +1 more source

An equivariant rim hook rule for quantum cohomology of Grassmannians [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2014
A driving question in (quantum) cohomology of flag varieties is to find non-recursive, positive combinatorial formulas for expressing the quantum product in a particularly nice basis, called the Schubert basis.
Elizabeth Beazley   +2 more
doaj   +1 more source

BCJ, worldsheet quantum algebra and KZ equations

open access: yesJournal of High Energy Physics, 2020
We exploit the correspondence between twisted homology and quantum group to construct an algebra explanation of the open string kinematic numerator. In this setting the representation depends on string modes, and therefore the cohomology content of the ...
Chih-Hao Fu, Yihong Wang
doaj   +1 more source

Quantum Cohomology and Periods [PDF]

open access: yesAnnales de l'Institut Fourier, 2011
In a previous paper, the author introduced an integral structure in quantum cohomology defined by the K-theory and the Gamma class and showed that it is compatible with mirror symmetry for toric orbifolds. Applying the quantum Lefschetz principle to the previous results, we find an explicit relationship between solutions to the quantum differential ...
openaire   +2 more sources

Vortex-Line Condensation in Three Dimensions: A Physical Mechanism for Bosonic Topological Insulators

open access: yesPhysical Review X, 2015
Bosonic topological insulators (BTIs) in three dimensions are symmetry-protected topological phases protected by time-reversal and boson number conservation symmetries.
Peng Ye, Zheng-Cheng Gu
doaj   +1 more source

The role of cohomology in quantum computation with magic states [PDF]

open access: yesQuantum, 2023
A web of cohomological facts relates quantum error correction, measurement-based quantum computation, symmetry protected topological order and contextuality. Here we extend this web to quantum computation with magic states.
Robert Raussendorf   +3 more
doaj   +1 more source

GLSMs for exotic Grassmannians

open access: yesJournal of High Energy Physics, 2020
In this paper we explore nonabelian gauged linear sigma models (GLSMs) for symplectic and orthogonal Grassmannians and flag manifolds, checking e.g.
Wei Gu, Eric Sharpe, Hao Zou
doaj   +1 more source

On the Quantum Cohomology Rings of General Type Projective Hypersurfaces and Generalized Mirror Transformation [PDF]

open access: yes, 1999
In this paper, we study the structure of the quantum cohomology ring of a projective hypersurface with non-positive 1st Chern class. We prove a theorem which suggests that the mirror transformation of the quantum cohomology of a projective Calabi-Yau ...
Jinzenji, M.
core   +2 more sources

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