Results 131 to 140 of about 162,690 (325)

Homological quantum mechanics

Journal of High Energy Physics
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, Olaf Hohm, Allison F. Pinto   +2 more
doaj   +1 more source

On The Harmonic Oscillator Group [PDF]

, 2011
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., Suslov, Sergei K., Vega-Guzman, Jose M.   +2 more
core  

Imidazo[1,5‐a]pyridine – Eine Vielseitige Plattform für Strukturell Einzigartige N‐Heterocyclische Olefine und π‐Ausgedehnte Heterocyclen

Angewandte Chemie, EarlyView.
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, Patrick W. Antoni, Yannick Lorenz, Chris Burdenski, Jan‐Lukas Kirchhoff, Carsten Strohmann, Max M. Hansmann   +6 more
wiley   +1 more source

Nonequilibrium quantum fluctuation relations for harmonic systems in nonthermal environments

New Journal of Physics, 2013
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, P Nalbach, A Alvermann, H Fehske, M Thorwart   +4 more
doaj   +1 more source

H-Theorem in an Isolated Quantum Harmonic Oscillator. [PDF]

Entropy (Basel), 2022
Hsueh CH, Cheng CH, Horng TL, Wu WC.
europepmc   +1 more source

Asymmetric variation of a finite mass harmonic like oscillator

Results in Physics, 2020
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, P. Mallick, M.E. Samei, B. Rath, Prachiparava Mohapatra, Hussein Shanak, Rabab Jarrar   +6 more
doaj  

Exact Solution of a Time-Dependent Quantum Harmonic Oscillator with Two Frequency Jumps via the Lewis-Riesenfeld Dynamical Invariant Method. [PDF]

Entropy (Basel), 2022
Coelho SS, Queiroz L, Alves DT.
europepmc   +1 more source

Imidazo[1,5‐a]pyridines – A Versatile Platform for Structurally Distinct N‐Heterocyclic Olefins and π‐Extended Heterocycles

Angewandte Chemie International Edition, EarlyView.
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, Patrick W. Antoni, Yannick Lorenz, Chris Burdenski, Jan‐Lukas Kirchhoff, Carsten Strohmann, Max M. Hansmann   +6 more
wiley   +1 more source

On relativistic harmonic oscillator

, 2017
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

Advanced Physics Research, EarlyView.
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