Results 1 to 10 of about 804 (189)

Bifurcation of limit cycles for a class of quintic Hamiltonian systems with quartic perturbed terms

open access: yes上海师范大学学报. 自然科学版, 2022
By using the method of detection function and numerical calculation, the bifurcation of limit cycles for a class of quintic Hamiltonian systems under quartic perturbations was studied.
HE Qing, ZHANG Jingtao, HONG Xiaochun
doaj   +1 more source

Duality and transport for supersymmetric graphene from the hemisphere partition function

open access: yesJournal of High Energy Physics, 2020
We use localization to compute the partition function of a four dimensional, supersymmetric, abelian gauge theory on a hemisphere coupled to charged matter on the boundary.
Rajesh Kumar Gupta   +2 more
doaj   +1 more source

The 3d twisted index and wall-crossing

open access: yesSciPost Physics, 2022
We study the twisted index of 3d $\mathcal{N}=2$ supersymmetric gauge theories on $S^1 \times \Sigma$ in the presence of a real FI parameter deformation. This parameter induces a 1d FI parameter for the effective supersymmetric quantum mechanics on $S^1$.
Mathew Bullimore, Andrea E.V. Ferrari, Heeyeon Kim
doaj   +1 more source

The static quark potential from the gauge independent Abelian decomposition

open access: yesNuclear Physics B, 2015
We investigate the relationship between colour confinement and the gauge independent Cho–Duan–Ge Abelian decomposition. The decomposition is defined in terms of a colour field n; the principle novelty of our study is that we have used a unique definition
Nigel Cundy   +3 more
doaj   +1 more source

Sharp Bound of the Number of Zeros for a Liénard System with a Heteroclinic Loop

open access: yesDiscrete Dynamics in Nature and Society, 2021
In the presented paper, the Abelian integral Ih of a Liénard system is investigated, with a heteroclinic loop passing through a nilpotent saddle. By using a new algebraic criterion, we try to find the least upper bound of the number of limit cycles ...
Junning Cai, Minzhi Wei, Guoping Pang
doaj   +1 more source

Multi-centered black holes, scaling solutions and pure-Higgs indices from localization

open access: yesSciPost Physics, 2021
The Coulomb Branch Formula conjecturally expresses the refined Witten index for $N=4$ Quiver Quantum Mechanics as a sum over multi-centered collinear black hole solutions, weighted by so-called `single-centered' or `pure-Higgs' indices, and suitably ...
Guillaume Beaujard, Swapnamay Mondal, Boris Pioline
doaj   +1 more source

Poincaré Bifurcation of Limit Cycles from a Liénard System with a Homoclinic Loop Passing through a Nilpotent Saddle

open access: yesDiscrete Dynamics in Nature and Society, 2019
In present paper, the number of zeros of the Abelian integral is studied, which is for some perturbed Hamiltonian system of degree 6. We prove the generating elements of the Abelian integral from a Chebyshev system of accuracy of 3; therefore there are ...
Minzhi Wei, Junning Cai, Hongying Zhu
doaj   +1 more source

Interaction of non-Abelian tensor gauge fields

open access: yesPhysics Letters B, 2018
The non-Abelian tensor gauge fields take value in extended Poincaré algebra. In order to define the invariant Lagrangian we introduce a vector variable in two alternative ways: through the transversal representation of the extended Poincaré algebra and ...
George Savvidy
doaj   +1 more source

Integral Cayley Sum Graphs and Groups

open access: yesDiscussiones Mathematicae Graph Theory, 2016
For any positive integer k, let Ak denote the set of finite abelian groups G such that for any subgroup H of G all Cayley sum graphs CayS(H, S) are integral if |S| = k. A finite abelian group G is called Cayley sum integral if for any subgroup H of G all
Ma Xuanlong, Wang Kaishun
doaj   +1 more source

Inversion of GPS meteorology data [PDF]

open access: yesAnnales Geophysicae, 1997
The GPS meteorology (GPS/MET) experiment, led by the Universities Corporation for Atmospheric Research (UCAR), consists of a GPS receiver aboard a low earth orbit (LEO) satellite which was launched on 3 April 1995.
K. Hocke
doaj   +1 more source

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