Results 21 to 30 of about 18,450 (294)

$$X_1(2900)$$ X 1 ( 2900 ) as a $$\bar{D}_1 K$$ D ¯ 1 K molecule

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
The analyses of the LHCb data on X(2900) in the $$D^- K^+$$ D - K + spectrum are performed. Both dynamically generated and explicitly introduced $$X_1(2900)$$ X 1 ( 2900 ) are considered.
Hao Chen, Hong-Rong Qi, Han-Qing Zheng
doaj   +1 more source

Equilibria and Bogdanov-Takens Bifurcation Analysis in the Bazykin’s Predator-Prey System

open access: yesDiscrete Dynamics in Nature and Society, 2022
In the paper, we proposed a Bazykin’s predator-prey system to explore the equilibrium point and Bogdanov-Takens bifurcation problems. Firstly, we derived some key parameter threshold conditions to ensure that the Bazykin’s predator-prey system had a ...
Shuangte Wang, Hengguo Yu
doaj   +1 more source

Engineering Higgs dynamics by spectral singularities

open access: yesPhysical Review Research, 2023
We generalize the dynamical phase diagram of a Bardeen-Cooper-Schrieffer condensate, considering attractive to repulsive, i.e., critical quenches (CQs) and a nonconstant density of states (DOS).
H. P. Ojeda Collado   +2 more
doaj   +1 more source

On nonhomogeneous boundary value problem for the stationary Navier-Stokes equations in a symmetric cusp domain

open access: yesMathematical Modelling and Analysis, 2021
The nonhomogeneous boundary value problem for the stationary NavierStokes equations in 2D symmetric multiply connected domain with a cusp point on the boundary is studied. It is assumed that there is a source or sink in the cusp point.
Kristina Kaulakytė, Neringa Klovienė
doaj   +1 more source

Pure and Random Quantum Ising Chain : Shannon and Renyi entropies of the ground state via real space renormalization [PDF]

open access: yes, 2015
The Shannon and the Renyi entropies of the ground state wavefunction in the pure and in the random quantum Ising chain are studied via the self-dual Fernandez-Pacheco real-space renormalization procedure.
Monthus, Cecile
core   +3 more sources

Quantum scalar field in D-dimensional static black hole space-times [PDF]

open access: yes, 1999
An Euclidean approach for investigating quantum aspects of a scalar field living on a class of D-dimensional static black hole space-times, including the extremal ones, is reviewed. The method makes use of a near horizon approximation of the metric and $\
Cheeger J.   +4 more
core   +2 more sources

Bogdanov–Takens bifurcation of a Holling IV prey–predator model with constant-effort harvesting

open access: yesJournal of Inequalities and Applications, 2021
A prey–predator model with constant-effort harvesting on the prey and predators is investigated in this paper. First, we discuss the number and type of the equilibria by analyzing the equations of equilibria and the distribution of eigenvalues.
Lifang Cheng, Litao Zhang
doaj   +1 more source

Cusp Points in the Parameter Space of Degenerate 3-RPR Planar Parallel Manipulators [PDF]

open access: yes, 2012
This paper investigates the conditions in the design parameter space for the existence and distribution of the cusp locus for planar parallel manipulators.
Chablat, Damien   +4 more
core   +4 more sources

Classification of absolutely dicritical foliations of cusp type [PDF]

open access: yes, 2012
We give a classification of absolutely dicritical foliations of cusp type, that is, the germ of singularities of complex foliations in the complex plane topologically equivalent to the singularity given by the level of the meromorphic function \frac{y^{2}
Genzmer, Yohann
core   +5 more sources

Degenerations of elliptic curves and cusp singularities [PDF]

open access: green, 1995
We give more or less explicit equations for all two-dimensional cusp singularities of embedding dimension at least 4. They are closely related to Felix Klein's equations for universal curves with level n structure. The main technical result is a description of the versal deformation of an n-gon in $P^{n-1}$. The final section contains the equations for
Jan Stevens
openalex   +3 more sources

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