Results 41 to 50 of about 1,721 (138)
Integrable discretisations and Yang–Baxter maps for super nonlinear Schrödinger systems
Nuclear Physics BWe construct an integrable Grassmann-extended vertex-bond discrete system, which can be restricted to the Grassmann-extended Adler–Yamilov system of partial difference equations, and we derive a Darboux matrix and a Bäcklund transformation for the latter.
Sotiris Konstantinou-Rizos
doaj +1 more source
Entropy, 2020 In the differential approach elaborated, we study the evolution of the parameters of Gaussian, mixed, continuous variable density matrices, whose dynamics are given by Hermitian Hamiltonians expressed as quadratic forms of the position and momentum ...
Julio A. López-Saldívar +2 more
doaj +1 more source
Integrating Coupled‐Cluster Theory Within AI Workflows for Accurate Molecular Geometries
Journal of Computational Chemistry, Volume 47, Issue 21, August 5, 2026.The Λ$$ \Lambda $$DDCC framework accelerates CCSD geometry optimizations by replacing expensive, iterative solvers with neural network predictions of wavefunction amplitudes. By utilizing a physically grounded MO representation, this method accurately recovers CC parameters to yield reliable nuclear gradients.
Shahzad Akram, Konstantinos D. Vogiatzis
wiley +1 more source
Electronic Journal of Differential Equations, 2009 The initial-value problem for the focusing nonlinear Schrodinger (NLS) equation is solved numerically by following the various steps of the inverse scattering transform.
Sebastiano Seatzu +2 more
doaj
Scientific Reports, 2021 We study theoretically a possibility of creation and ultrafast control (erasing, spatial frequency multiplication) of population density gratings in a multi-level resonant medium having a resonance transition frequency in the THz range.
Rostislav Arkhipov +6 more
doaj +1 more source
Resonant Tunneling in Laser‐Dressed Double‐Barrier Nanostructures: Role of Potential Geometry
Advanced Physics Research, Volume 5, Issue 8, August 2026.A schematic illustration of laser‐dressed double‐barrier nanostructures with rectangular, parabolic, and triangular potential profiles is presented. The intense laser field modifies the effective confinement potential, leading to a shift in resonance energies.
Recep Aydın, Mehmet Batı
wiley +1 more source
Coupled transport in rotor models
New Journal of Physics, 2016 Steady nonequilibrium states are investigated in a one-dimensional setup in the presence of two thermodynamic currents. Two paradigmatic nonlinear oscillators models are investigated: an XY chain and the discrete nonlinear Schrödinger equation.
S Iubini, S Lepri, R Livi, A Politi
doaj +1 more source
Self‐Similar Blowup for the Cubic Schrödinger Equation
Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1831-1918, August 2026.ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley +1 more source
Results in PhysicsIn this work, we have investigated theoretically the simultaneous effects of the geometrical parameters and encapsulated dioxide matrix on the electronic and optical properties of CdSe/ZnSe spheroidal prolate core/shell quantum dots (SPCSQDs). The energy
N. Zeiri +5 more
doaj +1 more source
Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies
Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil +6 more
wiley +1 more source