Results 51 to 60 of about 4,250,304 (141)

Charging a quantum battery from the Bloch Sphere

Annalen der Physik, Volume 538, Issue 1, January 2026.
This study uncovers the origin of the ergotropy stockpiled during the charging of a quantum battery, as well as the genesis of the battery capacity. It is found that both coherences and population inversion can meaningfully contribute, and the balance between these two mechanisms is intimately related to the initial state of the charger as well as the ...
Charles Andrew Downing, Muhammad Shoufie Ukhtary   +1 more
wiley   +1 more source

Determining Liouvillian first integrals for dynamical systems in the plane [PDF]

Computer Physics Communications, 2007
Here we present/implement an algorithm to find Liouvillian first integrals of dynamical systems in the plane. In \cite{JCAM}, we have introduced the basis for the present implementation. The particular form of such systems allows reducing it to a single rational first order ordinary differential equation (rational first order ODE).
Avellar, J., Duarte, L. G. S., Duarte, S. E. S., Da Mota, L. A. C. P.   +3 more
openaire   +3 more sources

Coexistence of weak and strong coupling in a photonic molecule through dissipative coupling to a quantum dot

Nanophotonics, Volume 14, Issue 27, Page 5163-5175, December 2025.
Abstract We study the emission from a molecular photonic cavity formed by two proximal photonic crystal defect cavities containing a small number (<3) of In(Ga)As quantum dots. Under strong excitation, we observe photoluminescence from the bonding and antibonding modes in agreement with ab initio numerical simulations.
Stefan Lichtmannecker, Santiago Echeverri‐Arteaga, Michael Kaniber, Isabel C. Andrade Martelo, Joaquín Ruiz‐Rivas, Thorsten Reichert, Günther Reithmaier, Per‐Lennart Ardelt, Max Bichler, Eduardo Zubizarreta Casalengua, Edgar A. Gómez, Herbert Vinck‐Posada, Elena del Valle, Kai Müller, Fabrice P. Laussy, Jonathan J. Finley   +15 more
wiley   +1 more source

Homogeneous‐Like Generalized Cubic Systems

International Journal of Differential Equations, Volume 2016, Issue 1, 2016., 2016
We consider properties and center conditions for plane polynomial systems of the forms x˙=-y-p1(x,y)-p2(x,y), y˙=x+q1(x,y)+q2(x,y) where p1, q1 and p2, q2 are polynomials of degrees n and 2n − 1, respectively, for integers n ≥ 2. We restrict our attention to those systems for which yp2(x, y) + xq2(x, y) = 0.
G. R. Nicklason, Jaume Giné
wiley   +1 more source

A note on Liouvillian first integrals and invariant algebraic curves

Applied Mathematics Letters, 2021
In this paper we study the existence and non-existence of finite invariant algebraic curves for complex planar polynomial differential system having a Liouvillian first integral.
Giné, Jaume, Grau Montaña, Maite, Llibre, Jaume   +2 more
openaire   +7 more sources

Differential Galois Approach to the Non-integrability of the Heavy Top Problem [PDF]

, 2004
We study integrability of the Euler-Poisson equations describing the motion of a rigid body with one fixed point in a constant gravity field. Using the Morales-Ramis theory and tools of differential algebra we prove that a symmetric heavy top is ...
Andrzej J. Maciejewski, Maria Przybylska, To Jean-pierre Ramis   +2 more
core   +3 more sources

Magnetic Dipolar Quantum Battery with Spin‐Orbit Coupling

Advanced Quantum Technologies, Volume 8, Issue 11, November 2025.
The study explores a magnetic dipolar system influenced by Zeeman splitting, DM, and KSEA interactions, focusing on quantum resources in both closed and open systems. By analyzing the Gibbs state and solving the Lindblad equation, it examines the effects of thermal and dephasing noise on coherence, discord, and entanglement.
Asad Ali, Samira Elghaayda, Saif Al‐Kuwari, M.I. Hussain, M.T. Rahim, Hashir Kuniyil, Tim Byrnes, James Q. Quach, Mostafa Mansour, Saeed Haddadi   +9 more
wiley   +1 more source

Relativity and irreversibility

Discrete Dynamics in Nature and Society, Volume 2004, Issue 1, Page 35-49, 2004., 2004
The Lorentz transformation is extended to the decaying states in a relativistic model of interacting fields. The nonlocal action is defined beyond the Hilbert space. This shows that irreversible extensions of dynamics of Poincaré nonintegrable systems are compatible with relativity.
I. Antoniou, E. Karpov, I. Prigogine, G. Pronko   +3 more
wiley   +1 more source

Non-integrability of the generalised spring-pendulum problem

, 2003
We investigate a generalisation of the three dimensional spring-pendulum system. The problem depends on two real parameters $(k,a)$, where $k$ is the Young modulus of the spring and $a$ describes the nonlinearity of elastic forces.
Maciejewski, Andrzej J., Przybylska, Maria, Weil, Jacques-Arthur   +2 more
core   +1 more source

Stochastic Hydrodynamic Velocity Field and the Representation of Langevin Equations

Annalen der Physik, Volume 537, Issue 6, June 2025.
A lumped method is proposed to account for both mean‐field hydrodynamics and stochastic fluctuations within the kinematic equations of motion, providing a regularized formulation of the overdamped approximation. The concept of stochastic realizability in broad sense is introduced based on the spectral properties of the Fredholm operator associated with
Massimiliano Giona, Davide Cocco, Giuseppe Procopio   +2 more
wiley   +1 more source