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On a Convergent Model of Quantum Field Theory with Indefinite Metric. II [PDF]

open access: yesProgress of Theoretical Physics, 1961
A convergent model of quantum field theory with indefinite metric is proposed to the case of an indirect interaction between a physical neutnd scalar field and a physical spinor field, by introducing four kinds of unphysical spinor fidcls which play the roles of the in­ termediate states connecting these two of physical fielcl~. Two of these unphysical
openaire   +2 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Quantum dynamics of cosmological particle production: interacting quantum field theories with matrix product states

open access: yesJournal of High Energy Physics
Understanding real-time dynamics of interacting quantum fields in curved space-time remains a major theoretical challenge. We employ tensor network methods to study such dynamics using interacting scalar and gauge theories in 1+1 spacetime dimensions ...
Evan Budd   +3 more
doaj   +1 more source

Photon masses in the landscape and the swampland

open access: yesJournal of High Energy Physics, 2019
In effective quantum field theory, a spin-1 vector boson can have a technically natural small mass that does not originate from the Higgs mechanism. For such theories, which may be written in Stückelberg form, there is no point in field space at which ...
Matthew Reece
doaj   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

open access: yesAdvanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain   +5 more
wiley   +1 more source

Renormalizability of noncommutative quantum field theories

open access: yes, 2011
We present the issue of noncommutative quantum field theories and their renormalizability with respect to the context of quantum spaces and ...
Marcillaud de Goursac, Axel   +1 more
core  

Evidence for Itinerant Ferromagnetic Flat Bands Producing Large Transverse Responses

open access: yesAdvanced Materials, EarlyView.
Itinerant ferromagnetic flat bands are demonstrated in GdCo5 with a high Curie temperature of 940K, a stacked honeycomb–kagome lattice, through angle‐resolved photoemission spectroscopy and magneto‐thermoelectric measurements. These topological flat bands generate large Berry curvaturte, producing gigantic anomalous Nernst effect with record‐high ...
Susumu Minami   +15 more
wiley   +1 more source

Quantum simulation with gauge fixing: From Ising lattice gauge theory to dynamical flux model

open access: yesPhysical Review Research
Quantum simulation of synthetic dynamic gauge field has attracted much attentions in recent years. There are two traditional ways to simulate gauge theories.
Junsen Wang, Xiangxiang Sun, Wei Zheng
doaj   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

open access: yesAdvanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally   +2 more
wiley   +1 more source

Quantum dynamics of the effective field theory of the Calogero-Sutherland model

open access: yesNuclear Physics B
We consider the known effective field theory of the Calogero-Sutherland model in the thermodynamic limit of large number of particles, obtained from the standard procedure in conformal field theory: the Hilbert space is constructed a priori in terms of ...
Federico L. Bottesi, Guillermo R. Zemba
doaj   +1 more source

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