Results 41 to 50 of about 208,309 (159)

Comment on “Primary Dimensions”

European Physical Journal C: Particles and Fields
We show that the concept of primary dimensions, first introduced in [1] as an organizing principle for chiral Lagrangians, is inconsistent. Although this had been pointed out already in [2], the notion of primary dimensions has re-appeared in recent ...
G. Buchalla, O. Catà, A. Celis, C. Krause   +3 more
doaj   +1 more source

The pion mass and decay constant at three loops in two-flavour chiral perturbation theory

Journal of High Energy Physics, 2017
A calculation of the pion mass and decay constant at NNNLO in two-flavour chiral perturbation theory is presented. The results are cross-checked by using both the exponential and square root parametrizations of the Goldstone matrix field, as well as by ...
Johan Bijnens, Nils Hermansson Truedsson
doaj   +1 more source

Hierarchical Artificial Muscle with Nonlinear Elasticity for Antagonistic and Cyclic Robotics

Advanced 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, Liuyang Cheng, Ali Albazroun, Qiong Wang, Jeongmin Kim, Arman Tekinalp, Soonwook Kim, Charlie Simcox, Ryne Downing, Vagish Sivaramakrishnan, Grace Carsello, Miles Bimrose, Wonsik Eom, William P. King, Mattia Gazzola, Sameh Tawfick   +15 more
wiley   +1 more source

From quarks to nucleons in dark matter direct detection

Journal of High Energy Physics, 2017
We provide expressions for the nonperturbative matching of the effective field theory describing dark matter interactions with quarks and gluons to the effective theory of nonrelativistic dark matter interacting with nonrelativistic nucleons.
Fady Bishara, Joachim Brod, Benjamin Grinstein, Jure Zupan   +3 more
doaj   +1 more source

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

Fortschritte 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

How to employ B ¯ d 0 → J / ψ π η , K ¯ K $$ {\overline{B}}_d^0\to J/\psi \left(\uppi \eta, \overline{K}K\right) $$ decays to extract information on πη scattering

Journal of High Energy Physics, 2017
We demonstrate that dispersion theory allows one to deduce crucial information on πη scattering from the final-state interactions of the light mesons visible in the spectral distributions of the decays B ¯ d 0 → J / ψ π 0 η , K + K − , K 0 K ¯ 0 ...
M. Albaladejo, J. T. Daub, C. Hanhart, B. Kubis, B. Moussallam   +4 more
doaj   +1 more source

On 1D, N $$ \mathcal{N} $$ = 4 supersymmetric SYK-type models. Part I

Journal of High Energy Physics, 2021
Proposals are made to describe 1D, N $$ \mathcal{N} $$ = 4 supersymmetrical systems that ex- tend SYK models by compactifying from 4D, N $$ \mathcal{N} $$ = 1 supersymmetric Lagrangians involving chiral, vector, and tensor supermultiplets.
S. James Gates, Yangrui Hu, S.-N. Hazel Mak   +2 more
doaj   +1 more source

Reconfigurable Acoustofluidic Microvortices for Selective Microcargo Delivery

Advanced 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, Yiqiang Wu, Yiyang Tang, Hui Wei, Tianshi Lyu, Xin Zhang, Tian‐Yun Huang   +6 more
wiley   +1 more source

An effective strong-coupling theory of composite particles in UV-domain

Journal of High Energy Physics, 2017
We briefly review the effective field theory of massive composite particles, their gauge couplings and characteristic energy scale in the UV-domain of UV-stable fixed point of strong four-fermion coupling, then mainly focus the discussions on the decay ...
She-Sheng Xue
doaj   +1 more source

Monopoles, Clarified

Fortschritte der Physik, Volume 74, Issue 3, March 2026.
ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal, Subhroneel Chakrabarti, Madhusudhan Raman   +2 more
wiley   +1 more source