Results 61 to 70 of about 2,825,153 (362)

Elliptic K3 surfaces at infinite complex structure and their refined Kulikov models

open access: yesJournal of High Energy Physics, 2022
Motivated by the Swampland Distance and the Emergent String Conjecture of Quantum Gravity, we analyse the infinite distance degenerations in the complex structure moduli space of elliptic K3 surfaces. All complex degenerations of K3 surfaces are known to
Seung-Joo Lee, Timo Weigand
doaj   +1 more source

New Symbolic Tools for Differential Geometry, Gravitation, and Field Theory [PDF]

open access: yes, 2011
DifferentialGeometry is a Maple software package which symbolically performs fundamental operations of calculus on manifolds, differential geometry, tensor calculus, Lie algebras, Lie groups, transformation groups, jet spaces, and the variational ...
Acvevedo M.   +5 more
core   +4 more sources

Triviality of differential Galois cohomologies of linear differential algebraic groups [PDF]

open access: yesCommunications in Algebra 47 (2019) 5094-5100, 2017
We show that the triviality of the differential Galois cohomologies over a partial differential field K of a linear differential algebraic group is equivalent to K being algebraically, Picard-Vessiot, and linearly differentially closed. This former is also known to be equivalent to the uniqueness up to an isomorphism of a Picard-Vessiot extension of a ...
arxiv   +1 more source

Smoothly splitting amplitudes and semi-locality

open access: yesJournal of High Energy Physics, 2022
In this paper, we study a novel behavior developed by certain tree-level scalar scattering amplitudes, including the biadjoint, NLSM, and special Galileon, when a subset of kinematic invariants vanishes without producing a singularity.
Freddy Cachazo   +2 more
doaj   +1 more source

Differential Signatures of Algebraic Curves [PDF]

open access: yesSIAM Journal on applied algebra and geometry, 2018
In this paper, we adapt the differential signature construction to the equivalence problem for complex plane algebraic curves under the actions of the projective group and its subgroups.
I. Kogan, Michael Ruddy, C. Vinzant
semanticscholar   +1 more source

Doubling, T-Duality and Generalized Geometry: a simple model

open access: yesJournal of High Energy Physics, 2018
A simple mechanical system, the three-dimensional isotropic rigid rotator, is here investigated as a 0+1 field theory, aiming at further investigating the relation between Generalized/Double Geometry on the one hand and Doubled World-Sheet Formalism ...
Vincenzo E. Marotta   +2 more
doaj   +1 more source

Weights and recursion relations for ϕ p tree amplitudes from the positive geometry

open access: yesJournal of High Energy Physics, 2020
Recently, the accordiohedron in kinematic space was proposed as the positive geometry for planar tree-level scattering amplitudes in the ϕ p theory [1]. The scattering amplitudes are given as a weighted sum over canonical forms of some accordiohedra with
Ryota Kojima
doaj   +1 more source

Construction of hybrid 1D‐0D networks for efficient and accurate blood flow simulations

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 95, Issue 2, Page 262-312, February 2023., 2023
A set of coupling equations to appropriately couple nonlinear 1D and lumped‐parameter (0D) models for blood flow in compliant vessels is defined. Then, a methodology for the high‐order numerical coupling between 1D and 0D vessels through hybrid junctions is proposed.
Beatrice Ghitti   +3 more
wiley   +1 more source

On Weingarten transformations of hyperbolic nets [PDF]

open access: yes, 2013
Weingarten transformations which, by definition, preserve the asymptotic lines on smooth surfaces have been studied extensively in classical differential geometry and also play an important role in connection with the modern geometric theory of ...
Emanuel Huhnen-venedey   +2 more
core   +1 more source

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