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Chemical Systems with Limit Cycles. [PDF]

open access: yesBull Math Biol, 2023
AbstractThe dynamics of a chemical reaction network (CRN) is often modeled under the assumption of mass action kinetics by a system of ordinary differential equations (ODEs) with polynomial right-hand sides that describe the time evolution of concentrations of chemical species involved. Given an arbitrarily large integer $$K \in {\mathbb N}$$
Erban R, Kang HW.
europepmc   +6 more sources

RG limit cycles [PDF]

open access: yesPomeranchuk 100, 2014
In this review we consider the concept of limit cycles in the renormalization group flows. The examples of this phenomena in the quantum mechanics and field theory will be presented.Comment: 35 pages, 3 figures; Contribution to the "Pomeranchuk-100 ...
Bulycheva, K., Gorsky, A.
core   +2 more sources

Limit cycles and chaos in the hybrid atom-optomechanics system [PDF]

open access: yesScientific Reports, 2022
We consider atoms in two different periodic potentials induced by different lasers, one of which is coupled to a mechanical membrane via radiation pressure force.
Xingran Xu   +2 more
doaj   +2 more sources

Limit Cycles in Four Dimensions [PDF]

open access: yesJournal of High Energy Physics, 2012
We present an example of a limit cycle, i.e., a recurrent flow-line of the beta-function vector field, in a unitary four-dimensional gauge theory. We thus prove that beta functions of four-dimensional gauge theories do not produce gradient flows.
A Pickering   +28 more
core   +5 more sources

LIMIT CYCLES CAN REDUCE THE WIDTH OF THE HABITABLE ZONE. [PDF]

open access: yesAstrophys J, 2016
The liquid water habitable zone (HZ) describes the orbital distance at which a terrestrial planet can maintain above-freezing conditions through regulation by the carbonate-silicate cycle.
Haqq-Misra J   +4 more
europepmc   +2 more sources

Limit Cycles and Conformal Invariance [PDF]

open access: yesJournal of High Energy Physics, 2012
There is a widely held belief that conformal field theories (CFTs) require zero beta functions. Nevertheless, the work of Jack and Osborn implies that the beta functions are not actually the quantites that decide conformality, but until recently no such ...
A Cappelli   +15 more
core   +5 more sources

Singular Potentials and Limit Cycles [PDF]

open access: yesPhysical Review A, 2000
We show that a central $1/r^n$ singular potential (with $n\geq 2$) is renormalized by a one-parameter square-well counterterm; low-energy observables are made independent of the square-well width by adjusting the square-well strength.
A. Kryjevski   +20 more
core   +4 more sources

Isochronous families of limit cycles

open access: yesElectronic Journal of Differential Equations, 2018
In this article we present a method for determining if the frequency of a family of periodic orbits remains constant when a parameter changes. Two-dimensional systems of ordinary and delayed differential equations are considered.
Romina Cobiaga, Walter Reartes
doaj   +3 more sources

The algebraic curves of planar polynomial differential systems with homogeneous nonlinearities

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
We consider planar polynomial systems of ordinary differential equations of the form $\dot x = x + P_n(x,y)$, $\dot y = y + Q_n(x,y)$, where $P_n(x,y),\ Q_n(x,y)$ are homogeneous polynomials of degree $n$.
Vladimir Cheresiz, Evgenii Volokitin
doaj   +1 more source

Rational limit cycles of Abel differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
We study the number of rational limit cycles of the Abel equation $x'=A(t)x^3+B(t)x^2$, where $A(t)$ and $B(t)$ are real trigonometric polynomials. We show that this number is at most the degree of $A(t)$ plus one.
José Luis Bravo   +2 more
doaj   +1 more source

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