Results 111 to 120 of about 3,107,450 (374)

Point-form quantum field theory

open access: yes, 2007
We examine canonical quantization of relativistic field theories on the forward hyperboloid, a Lorentz-invariant surface of the form $x_\mu x^\mu = \tau^2$.
Bakamjian   +34 more
core   +1 more source

Recent Advances in Single‐Atom Catalyst for Solar Energy Conversion: A Comprehensive Review and Future Outlook

open access: yesAdvanced Functional Materials, EarlyView.
This review highlights the potential of single‐atom catalysts in three key photocatalytic reactions: the hydrogen evolution reaction (HER), nitrogen reduction reaction for ammonia synthesis, and carbon dioxide reduction reaction (CO2RR) for chemical fuels.
Saad Mehmood   +5 more
wiley   +1 more source

Phase transition and piezoelectric property of (Ag,K)NbO3 ceramics

open access: yesJournal of Materiomics, 2022
AgNbO3 is an antiferroelectric (AFE) material with double hysteresis loop. Both the antiferroelectricity and ferroelectricity can be enhanced by doping.
Lin Chen   +5 more
doaj  

Fate of Quantum Anomalies for 1d lattice chiral fermion with a simple non-Hermitian Hamiltonian

open access: yesJournal of High Energy Physics, 2023
It is generally believed that the 1+1D model for a single chiral fermion does not exist by itself alone on lattice. The obstruction to such a lattice realization is the failure to reproduce the quantum anomalies of a chiral fermion in continuum.
Wei-Qiang Chen   +4 more
doaj   +1 more source

Exact results on quantum field theories interpolating between pairs of conformal field theories [PDF]

open access: yesarXiv, 1999
I review recent results on conformal field theories in four dimensions and quantum field theories interpolating between conformal fixed points, supersymmetric and non-supersymmetric. The talk is structured in three parts: i) central charges, ii) anomalous dimensions and iii) quantum irreversibility.
arxiv  

Quantum field theory for discrepancies

open access: yes, 1998
The concept of discrepancy plays an important role in the study of uniformity properties of point sets. For sets of random points, the discrepancy is a random variable. We apply techniques from quantum field theory to translate the problem of calculating
André van Hameren   +18 more
core   +1 more source

Highly Crystalline Selenium‐Substituted C‐Shaped Ortho‐Benzodipyrrole‐Based A‐D‐A‐Type Nonfullerene Acceptor Enabling Solution‐Processed Single‐Crystal‐Like Thin Films for Air‐Stable, High‐Mobility N‐Type Transistors

open access: yesAdvanced Functional Materials, EarlyView.
Symmetric selenium‐substituted CB‐2Se forms a highly ordered, kaleidoscope‐like 3D single‐crystal structure with enhanced intermolecular interactions, enabling solution‐processed single‐crystal‐like thin film, which transitions from a kinetically trapped face‐on π–π stacking orientation to a thermodynamically stable edge‐on configuration upon thermal ...
Kuo‐Hsiu Huang   +16 more
wiley   +1 more source

Models of Quantum Space Time: Quantum Field Planes [PDF]

open access: yesarXiv, 1994
Quantum field planes furnish a noncommutative differential algebra $\Omega$ which substitutes for the commutative algebra of functions and forms on a contractible manifold. The data required in their construction come from a quantum field theory. The basic idea is to replace the ground field ${\bf C}$ of quantum planes by the noncommutative algebra ...
arxiv  

2D Covalent Moiré Superlattice from Fluorinating Twisted Bilayer Graphene

open access: yesAdvanced Functional Materials, EarlyView.
A novel class of moiré materials, termed covalent moiré superlattice is proposed, which can be synthesized by functionalizing moiré van der Waals materials. By fluorinating twisted bilayer graphene, the weak van der Waals interactions between twisted graphene layers are transformed into strong covalent bonds, making the moiré superlattice effects ...
Depeng Ji, Qiaoling Xu, Lede Xian
wiley   +1 more source

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