Results 141 to 150 of about 5,285,566 (268)

Role of Anharmonicity and Bimetallic Intermixing in the IR and Raman Spectra of Cun$_{n}$ and Pdn$_{n}$Cu6−n$_{6-n}$ Clusters (n<7$n\lt 7$). Ab Initio Benchmarking of DFT

Small Structures, Volume 7, Issue 5, May 2026.
High‐level ab initio and density functional theory calculations reveal a structural and spectroscopic transition from pla nar Cu6 to three‐dimensional Pd6, whose lowest energy triplet state undergoes a Jahn‐Teller distortion. This evolution from molecule‐like to metal‐like bonding produces distinct infrared and Raman fingerprints, providing reliable ...
Katarzyna M. Krupka, Alexander O. Mitrushchenkov, María Pilar de Lara‐Castells   +2 more
wiley   +1 more source

Teleportation of a qubit using quasi-Bell states

Journal of Physics Communications
In this paper, we study the exotic Landau problem at the classical level where two conserved quantities are derived. At the quantum level, the corresponding quantum operators of the conserved quantities provide two oscillator representations from which ...
Isiaka Aremua, Laure Gouba
doaj   +1 more source

Quantum de Sitter Geometry

Universe
Quantum de Sitter geometry is discussed using elementary field operator algebras in Krein space quantization from an observer-independent point of view, i.e., ambient space formalism.
Mohammad Vahid Takook
doaj   +1 more source

Numerical Ranges of Normal Weighted Composition Operators on the Fock Space of CN

Journal of Function Spaces, 2018
Numerical ranges of normal weighted composition operators on the Fock space of CN are completely characterized. The main result shows that numerical ranges of such operators are closely related to their composition symbols.
Lili Lang, Liankuo Zhao
doaj   +1 more source

Hilbert spaces of symmetric analytical functions on $\ell_{1}$

Karpatsʹkì Matematičnì Publìkacìï, 2013
We consider completions of the space of symmetric polynomials on $\ell_{1}$ with respect to some Hilbert norm and investigate conditions under which the obtained spaces consist of analytic functions with domains in $\ell_{1}$.
O. M. Holubchak
doaj   +1 more source

Physical Fock space of tensionless strings

, 2004
We study the physical Fock space of the tensionless string theory with perimeter action which has pure massless spectrum. The states are classified by the Wigner's little group for massless particles.
Antoniadis, Ignatios, Savvidy, George
core  

Comprehensive Modeling of Acetone Clusters: QTAIM Analysis and QCE Study

Journal of Computational Chemistry, Volume 47, Issue 11, 30 April 2026.
A multiscale DFT‐QTAIM‐QCE approach links acetone cluster interactions to liquid‐phase behavior. Macroscopic thermodynamic and IR properties emerge from a dynamic equilibrium of small clusters. ABSTRACT In molecular research, comprehending the microscopic source of the macroscopic characteristics of polar aprotic solvents continues to be a significant ...
Juda Baikété, Alhadji Malloum, Jeanet Conradie   +2 more
wiley   +1 more source

Bosonic near-CFT1 models from Fock-space fluxes

Journal of High Energy Physics
We construct a family of near-CFT1 models with a conserved U(1) charge, whose basic degrees of freedom are canonical bosons. The Sachdev-Ye-Kitaev (SYK) model — the first microscopic model that realizes the near-CFT1 dynamics — is based on random p-local
Yiyang Jia
doaj   +1 more source

Addition Reactions of Phosphorus‐Centered Radicals Onto Olefins: Interplay Between Stability and Reactivity

Chemistry – A European Journal, Volume 32, Issue 16, 25 April 2026.
The energetics of the addition reaction of P‐centered radicals onto alkenes are primarily ruled by the stability of the attacking radical, as outlined by the computational screening of a wide range of reactions. In addition, donor‐acceptor substituents at the olefin have an important tuning role.
Meng Yang, Julianna Oláh, Zoltán Benkő   +2 more
wiley   +1 more source

Insights Into Symmetry and Substitution Patterns Governing Singlet–Triplet Energy Gap in the Chemical Space of Azaphenalenes

Chemistry – A European Journal, Volume 32, Issue 15, 22 April 2026.
ABSTRACT Molecules that violate Hund's rule by exhibiting an inverted singlet–triplet gap (STG), where the first excited singlet (S1${\rm S}_1$) lies below the triplet (T1${\rm T}_1$), are rare but hold great promise as efficient fifth‐generation light emitters.
Atreyee Majumdar, Raghunathan Ramakrishnan   +1 more
wiley   +1 more source