Results 131 to 140 of about 162,690 (325)
We provide a formulation of quantum mechanics based on the cohomology of the Batalin-Vilkovisky (BV) algebra. Focusing on quantum-mechanical systems without gauge symmetry we introduce a homotopy retract from the chain complex of the harmonic oscillator ...
Christoph Chiaffrino+2 more
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On The Harmonic Oscillator Group [PDF]
We discuss the maximum kinematical invariance group of the quantum harmonic oscillator from a view point of the Ermakov-type system. A six parameter family of the square integrable oscillator wave functions, which seems cannot be obtained by the standard
Lopez, Raquel M.+2 more
core
Die Synthese von N‐heterocyclischen Olefinen (NHOs) auf der Basis eines Imidazo[1,5‐a]pyridin‐Gerüsts wird beschrieben. Während C5‐Alkyl‐ oder Aryl‐Substituenten stabile NHOs ergeben, induzieren Alkenyl‐ oder Alkinylgruppen an C5 eine 6‐endo‐Cyclisierung, um (Dihydro)imidazo[2,1,5‐de]chinolizine mit starken paratropen Ringströmen zu bilden.
Robin Esken+6 more
wiley +1 more source
Nonequilibrium quantum fluctuation relations for harmonic systems in nonthermal environments
We formulate exact generalized nonequilibrium fluctuation relations for the quantum mechanical harmonic oscillator coupled to multiple harmonic baths. Each of the different baths is prepared in its own individual (in general nonthermal) state.
D Pagel+4 more
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H-Theorem in an Isolated Quantum Harmonic Oscillator. [PDF]
Hsueh CH, Cheng CH, Horng TL, Wu WC.
europepmc +1 more source
Asymmetric variation of a finite mass harmonic like oscillator
Classical and quantum mechanical analysis have been carried out on harmonic like oscillator with asymmetric position dependent mass. Phase space analysis are performed both classically and quantum mechanically for a plausible understanding of the subject.
Jihad Asad+6 more
doaj
Exact Solution of a Time-Dependent Quantum Harmonic Oscillator with Two Frequency Jumps via the Lewis-Riesenfeld Dynamical Invariant Method. [PDF]
Coelho SS, Queiroz L, Alves DT.
europepmc +1 more source
The synthesis of N‐heterocyclic olefins (NHOs) based on an imidazo[1,5‐a]pyridine scaffold is described. While C5‐alkyl or aryl substituents yield stable NHOs, alkenyl or alkynyl groups at C5 induce 6‐endo cyclization to form (dihydro)imidazo[2,1,5‐de]quinolizines with strong paratropic ring currents.
Robin Esken+6 more
wiley +1 more source
On relativistic harmonic oscillator
A relativistic quantum harmonic oscillator in 3+1 dimensions is derived from a quaternionic non-relativistic quantum harmonic oscillator. This quaternionic equation also yields the Klein-Gordon wave equation with a covariant (space-time dependent) mass ...
Arbab, A. I.
core
Orientation‐Dependent Upper Critical Magnetic Field and Density of State for Uranium Ditelluride
This study investigates the orientation‐dependent upper critical magnetic field (HC2) and the density of states (DOS) in the unconventional superconductor UTe2. These results reveal an anisotropic HC2, with distinct critical fields along different crystallographic axes, highlighting the role of electronic correlations and spin‐triplet pairing.
Habtamu Anagaw Muluneh
wiley +1 more source