Results 121 to 130 of about 31,625 (303)

Self‐Adaptive Anhydrous Passivation Mitigates Open‐Circuit Voltage Loss in Pb‐Sn Mixed Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
In this report, a self‐adaptive anhydrous passivation strategy is introduced by incorporating trimellitic anhydride (TMAH) into the perovskite precursor. In situ hydrolysis of TMAH yields trimellitic acid (TMA); ‐C═O/‐COO− groups of TMAH/TMA form a chelate with undercoordinated Pb2+/Sn2+, regulate nucleation, promote (100) orientation, passivate ...
Md. Ataur Rahman, Md. Abdul Karim, Md. Emrul Kayesh, Siliang Cao, Shamim Ahmmed, Kiyoto Matsuishi, Ashraful Islam   +6 more
wiley   +1 more source

Infrared finite amplitudes [PDF]

, 2004
Soft and collinear singularities, known collectively as infrared singularities here, plague the calculation of scattering amplitudes in gauge theories with massless particles such as QCD.
Forde, Darren Andrew
core  

Projectivity of planar zeros in field and string theory amplitudes

Journal of High Energy Physics, 2017
We study the projective properties of planar zeros of tree-level scattering amplitudes in various theories. Whereas for pure scalar field theories we find that the planar zeros of the five-point amplitude do not enjoy projective invariance, coupling ...
Diego Medrano Jiménez, Agustín Sabio Vera, Miguel Á. Vázquez-Mozo   +2 more
doaj   +1 more source

Template‐Confined Synthesis of Shape‐Engineered Single‐Crystal Gold Microplates in Lithographically‐Defined Polymeric Patterns

Advanced Functional Materials, EarlyView.
Single‐crystal gold microplates are high‐performance nanomaterials with an impressive wafer‐based application space. Progress has, however, been tempered by an inability to exert synthetic control over microplate size, shape, and positioning. In this work, control over these parameters is demonstrated using a seed‐mediated synthesis that both confines ...
Debasish Panda, Md Rashed Nizam, Walker J. Tuff, Collin C. Wyant, Maksym Zhukovskyi, Matthew R. Rosenberger, Botond Sánta, Edward C. Kinzel, Robert A. Hughes, Svetlana Neretina   +9 more
wiley   +1 more source

Waveforms from Amplitudes

, 2021
We show how to compute classical wave observables using quantum scattering amplitudes. We discuss observables both with incoming and with outgoing waves. The required classical limits are naturally described by coherent states of massless bosons.
Gonzo, Riccardo, O'Connell, Donal; id_orcid, O'Connell, Donal, Cristofoli, Andrea, Kosower, David A.   +4 more
core   +1 more source

AN INTEGRAL EQUATION FOR SCATTERING AMPLITUDES

Physical Review Letters, 1969
We outline a dynamical scheme for studying Regge behavior of scattering amplitudes. It is based on unitarity and the concept of short-range momentum-space correlations in high-energy processes.
Chew, G. F., Goldberger, M. L., Low, F. E.   +2 more
openaire   +2 more sources

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

Two-Loop Four-Graviton Scattering Amplitudes

, 2020
International audienceWe present the analytic form of the two-loop four-graviton scattering amplitudes in Einstein gravity. To remove ultraviolet divergences we include counterterms quadratic and cubic in the Riemann curvature tensor.
Jaquier, M., Febres Cordero, Fernando, Page, Ben, Ruf, M. S., Abreu, S., Souto Gonçalves de abreu, Samuel, Febres Cordero, F., Page, B., Sotnikov, V., Ita, H., Abreu, Samuel, Ruf, Michael, Sotnikov, Vasily, Ita, Harald, Ruf, M.S.   +14 more
core   +1 more source

Deconstructing supersymmetric S matrices in D <= 2+1 [PDF]

, 2013
http://arxiv.org/abs/1206.1857v1archiveprefix: arXiv primaryclass: hep-th slaccitation: %%CITATION = ARXIV:1206.1857;%%archiveprefix: arXiv primaryclass: hep-th slaccitation: %%CITATION = ARXIV:1206.1857;%%D. Y. was supported by FNU through Grant No. 272-
Agarwal, A, Young, D, Young, Donovan Michael, Agarwal, A.   +3 more
core   +1 more source

A Monte Carlo approach to the 4D scattering equations

Journal of High Energy Physics, 2018
The scattering equation formalism is a general framework for calculation of amplitudes in theories of massless particles. We provide a detailed introduction to the 4D scattering equation framework accessible to non-experts, outline current difficulties ...
Joseph A. Farrow
doaj   +1 more source