Results 61 to 70 of about 307,900 (212)

Estimates with an effective chiral Lagrangian for heavy mesons

open access: yes, 1992
On the basis of an effective lagrangian incorporating approximate chiral symmetry and heavy-quark spin and flavor symmetries, and by use of information on leptonic decays, we attempt an estimate of the effective D∗Dπ ...
Di Bartolomeo, Nicola   +5 more
core   +1 more source

Spin Observables in Pion Photoproduction and Nucleon Compton Scattering from the Chiral Lagrangian and Dispersion Relations [PDF]

open access: yes, 2016
A scheme based on the chiral Lagrangian, analyticity and unitarity is applied to spin observables in pion photoproduction and nucleon Compton scattering.
M. F. M. Lutz   +8 more
core   +1 more source

Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics

open access: yesAdvanced Science, Volume 13, Issue 30, 28 May 2026.
We construct hierarchical muscles by plying nylon fibers around a heating wire. The hierarchical muscle shows a J‐shaped passive curve, which shows benefit in antagonistic muscle pair and work accumulation mechanism. We also develop a computational, first‐principle model to understand the physics of both active actuation stroke and passive J‐curve ...
Samuel Tsai   +15 more
wiley   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Chiral Lagrangian with confinement from the QCD Lagrangian [PDF]

open access: yesPhysical Review D, 2002
An effective Lagrangian for the light quark in the field of a static source is derived systematically using the exact field correlator expansion. The lowest Gaussian term is bosonized using nonlocal colorless bosonic fields and a general structure of effective chiral Lagrangian is obtained containing all set of fields.
openaire   +2 more sources

Electroweak chiral Lagrangian and new precision measurements [PDF]

open access: yesPhysical Review D, 1993
21 pages, LaTex, 2 figures (not included), YCTP-P7 ...
Appelquist, T., Wu, G.
openaire   +3 more sources

Wess-Zumino-Witten interactions of axions: three-flavor

open access: yesJournal of High Energy Physics
We present a complete Lagrangian describing axion interactions with pseudoscalar and (axial-)vector mesons within the three light-flavor quark framework.
Yang Bai   +3 more
doaj   +1 more source

Production of vector resonances at the LHC via WZ-scattering: a unitarized EChL analysis

open access: yesJournal of High Energy Physics, 2017
In the present work we study the production of vector resonances at the LHC by means of the vector boson scattering WZ → WZ and explore the sensitivities to these resonances for the expected future LHC luminosities.
R. L. Delgado   +6 more
doaj   +1 more source

Reconfigurable Acoustofluidic Microvortices for Selective Microcargo Delivery

open access: yesAdvanced Science, Volume 13, Issue 16, 18 March 2026.
This work introduces a frequency‐encoded, reconfigurable acoustofluidic system that overcomes the low throughput and poor selectivity of conventional micro‐delivery methods. By exploiting discrete microbubble resonances to program adaptive microvortex modes, the platform enables real‐time switching and selective guidance of microscale payloads through ...
Lei Wang   +6 more
wiley   +1 more source

Nucleon magnetic form factors with non-local chiral effective Lagrangian

open access: yes, 2014
Chiral perturbation theory is a useful method to investigate the hadron properties. We apply the non-local chiral effective Lagrangian to study the nucleon magnetic form factors.
P. Wang
core   +1 more source

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