Suchergebnisse - "wavefunction"
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Observation of a Relationship Between Orbital-Specific Molecular Similarity Index and Toxicity of Methylcarbamate Derivatives
Veröffentlicht 2025-07-01Schlagworte: VolltextWe report a computational investigation on the reachability of the molecular similarity index (MSI) approach for predicting the relative drug strength of methylcarbamate derivatives. Traditional MSI values have been obtained by calculating the overlap integral of total electron momentum densities be...
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Analysis of InGaN-Delta-InN Quantum Wells on InGaN Substrates for Red Light Emitting Diodes and Lasers
Veröffentlicht 2021-01-01Schlagworte: VolltextModern multi-color RGB micro-light emitting diode (μLED) displays and digital micro-mirror laser projectors often require the use of both III-V and III-Nitride material systems for different pixel/laser colors. This is due primarily to the conventionally low efficiencies of red...
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An Explicit Numerical Scheme for Milne’s Phase–Amplitude Equations
Veröffentlicht 2025-06-01Schlagworte: VolltextWe present an explicit numerical method to solve Milne’s phase–amplitude equations. Existing methods directly solve Milne’s nonlinear equation for amplitude. For that reason, they exhibit high sensitivity to errors and are prone to instability through the growth of a spurious, rapidly varying compon...
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Determine the Lower-State Energy of (GaMn)As/GaAs Quantum Well using Localization Landscape Method
Veröffentlicht 2020-12-01“… The current research presented the value of the lowest state energy for (GaMn)As/GaAs Quantum Well by using the Schrodinger equation and the localization landscape method, and a comparison between the quantum confinement potential and the wavefunction localization of both the landscape method and the Schrödinger method, a great match was found between the two methods, where the Landscape method 0.1% greater than Schrodinger method. …”The current research presented the value of the lowest state energy for (GaMn)As/GaAs Quantum Well by using the Schrodinger equation and the localization landscape method, and a comparison between the quantum confinement potential and the wavefunction localization of both the landscape method and t...
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Verification Makhov,s profile for slow positron in Germanium
Veröffentlicht 2023-02-01“… The shape of the Makhov,s profile reflects the shape of the energy spectrum of the positrons, which indicates the annihilation of positrons inside the material where its wavefunction is delocalized. …”In this paper the mean penetration depths z0 and Makhov (Implantation) profile I(z,E) were evaluated for low energies positrons(1.5-30/keV)by using a distribution function of Valkealahti - Nieminen for Germanium for different thicknesses:0.2, 0.4,0.8,1.2,1.4,1.6 μm. The obtained results reveals t...
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The man in the high garden: An epicurean virtual history
Veröffentlicht 2024-01-01“… Dick, and Niall Ferguson, I consider a virtual history - or an alternative Everettian branch of the universal wavefunction - in which the ancient materialism and atomism of Epicurus (and heliocentrism of Aristarchus, for good measure) have prevailed over the (Neo) Platonist-Aristotelian religious-military complex. …”Following the lead of heterogeneous and invariably brilliant thinkers as Thucydides, Arnold J. Toynbee, Winston Churchill, Carl Sagan, Philip K. Dick, and Niall Ferguson, I consider a virtual history - or an alternative Everettian branch of the universal wavefunction - in which the ancient materiali...
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Extended Photoionization Cross Section Calculations for C III
Veröffentlicht 2025-07-01“… For bound channel contribution, the close-coupling wavefunction expansion for photoionization includes ground and 14 excited states of the target ion CIV and 105 states configurations of C III. …”Spectral features of photoionization of various levels of C III are reported. These include characteristics of Rydberg and Seaton resonances, low and high excited levels, lifetimes, and total and partial cross sections. Calculations are performed in the relativistic Breit–Pauli R-matrix method with...
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Numerical Evidence for a Bipartite Pure State Entanglement Witness from Approximate Analytical Diagonalization
Veröffentlicht 2025-06-01“… We show numerical evidence for a bipartite <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>d</mi><mo>×</mo><mi>d</mi></mrow></semantics></math></inline-formula> pure state entanglement witness that is readily calculated from the wavefunction coefficients directly, without the need for the numerical computation of eigenvalues. …”We show numerical evidence for a bipartite <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>d</mi><mo>×</mo><mi>d</mi></mrow></semantics></math><...
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Persistent currents in a strongly interacting multicomponent Bose gas on a ring
Veröffentlicht 2023-07-01“… By employing the Bethe Ansatz exact solution for the many-body wavefunction, we obtain the ground state energy and the persistent currents up to four particles. …”We consider a two-component Bose–Bose mixture at infinitely strong repulsive interactions in a tightly confining, one-dimensional ring trap and subjected to an artificial gauge field. By employing the Bethe Ansatz exact solution for the many-body wavefunction, we obtain the ground state energy and t...
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Variational solution of the superconducting Anderson impurity model and the band-edge singularity phenomena
Veröffentlicht 2025-07-01“… We propose a set of variational wavefunctions for the sub-gap spin-doublet and spin-singlet eigenstates of the particle-hole symmetric superconducting Anderson impurity model. …”We propose a set of variational wavefunctions for the sub-gap spin-doublet and spin-singlet eigenstates of the particle-hole symmetric superconducting Anderson impurity model. The wavefunctions include up to two Bogoliubov quasiparticles in the continuum which is necessary to correctly capture the w...
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Towards a uniqueness theorem for static black holes in Kaluza-Klein theory with small circle size
Veröffentlicht 2025-06-01“… A weaker statement that is straightforward to derive is a bound on how inhomogeneous a solution can be — putting this scalar theory in a large but finite cavity, a norm of the wavefunction of the Kaluza-Klein modes can be shown to vanish in the small circle limit. …”Abstract Kaluza-Klein theory, by which we mean vacuum gravity in 5-dimensions, with asymptotics that are a product of a circle with Minkowski spacetime, has a variety of different static black hole solutions; localized black holes and the homogeneous and inhomogeneous black strings. There is current...
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Calculation of Radial Density Distribution Function for main orbital of Carbon atom and Carbon like ions
Veröffentlicht 2014-12-01“… In this research the Hartree-fock wavefunctions have been computed using Mathcad computer software . …”Radial density distribution function of one particle D(r1) was calculated for main orbital of carbon atom and carbon like ions (N+ and B- ) by using the Partitioning technique .The results presented for K and L shells for the Carbon atom and negative ion of Boron and positive ion for nitrogen i...
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Veröffentlicht 2025-01-01“… It is possible to write down explicit wavefunctions explaining many if not all FQHE states. …”The fractional quantum Hall effect (FQHE) realized in two-dimensional electron systems is explained by the emergent composite fermions (CF) out of ordinary electrons. It is possible to write down explicit wavefunctions explaining many if not all FQHE states. In bilayer systems there is a regime at i...
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Scattering of quantum particles in global de Sitter spacetime I: The formalism
Veröffentlicht 2025-09-01“… The positive and negative “energy” wavefunctions are uniquely determined by the requirement that in observer's neighborhood, short wavelengths propagate as plane waves with positive and negative frequencies, respectively; they define a unique “Euclidean” (a.k.a. …”We develop a formalism for computing the scattering amplitudes in maximally symmetric de Sitter spacetime with compact spatial dimensions. We describe quantum states by using the representation theory of de Sitter symmetry group and link the Hilbert space to “inertial” geodesic observers. The positi...
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Topological phases driven by orbital entanglement in Transition Metal Oxide Perovskite interfaces
Veröffentlicht 2024-09-01“… It may lead to a quantum entanglement of the materials electronic wavefunctions which promotes topological states in low dimensional geometries. …”The deceptively simple crystallographic structure of early transition metal oxide perovskites belies the complexity and variety of electronic, magnetic and structural phases that they display. Structural defects, rotations, tilts, deformations of the oxygen-transition metal element octahedra help ex...
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Quantum-Inspired Statistical Frameworks: Enhancing Traditional Methods with Quantum Principles
Veröffentlicht 2025-04-01“… This manuscript introduces a comprehensive framework for augmenting classical statistical methodologies through the targeted integration of core quantum mechanical principles—specifically superposition, entanglement, measurement, wavefunctions, and density matrices. By concentrating on these foundational concepts instead of the whole expanse of quantum theory, we propose “quantum-inspired” models that address persistent shortcomings in conventional statistical approaches. …”This manuscript introduces a comprehensive framework for augmenting classical statistical methodologies through the targeted integration of core quantum mechanical principles—specifically superposition, entanglement, measurement, wavefunctions, and density matrices. By concentrating on these foundat...
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Quantum Classical Algorithm for the Study of Phase Transitions in the Hubbard Model via Dynamical Mean-Field Theory
Veröffentlicht 2025-04-01“… This approach is used to generate a database of zero-temperature wavefunctions of the Hubbard model within the DMFT approximation. …”Modeling many-body quantum systems is widely regarded as one of the most promising applications for near-term noisy quantum computers. However, in the near term, system size limitation will remain a severe barrier for applications in materials science or strongly correlated systems. A promising aven...
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Optical Characteristics of GaAs Spherical Quantum Dots Based on Single and Double Quartic Anharmonic Potentials: The Role of Structural Parameters
Veröffentlicht 2025-07-01“… The radial Schrödinger equation was solved using the finite difference method (FDM) to obtain the energy levels and the wavefunctions. These physical quantities were then used to compute the dipole matrix elements, the total optical absorption coefficient (TOAC), and the binding energies. …”This is a numerical investigation of optical and electronic characteristics of GaAs spherical quantum dots based on single and double quartic potentials and presenting a hydrogenic impurity at their center. The radial Schrödinger equation was solved using the finite difference method (FDM) to obtain...
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