Results 61 to 70 of about 482,879 (316)
Goldstone bosons in different PT-regimes of non-Hermitian scalar quantum field theories
Nuclear Physics B, 2020 We study the interplay between spontaneously breaking global continuous and discrete antilinear symmetries in a newly proposed general class of non-Hermitian quantum field theories containing a mixture of complex and real scalar fields.
Andreas Fring, Takanobu Taira
doaj +1 more source
The other variants of mixed μ-τ symmetry
Nuclear Physics B, 2023 Two new neutrino mass matrix textures exhibiting the mixed μ-τ symmetry are proposed. The mass matrices hint for a promising neutrino mixing schemes and find their connections with Δ(27) and A4 discrete symmetry groups respectively.
Pralay Chakraborty, Subhankar Roy
doaj +1 more source
Non-Anomalous Discrete R-symmetry Decrees Three Generations
, 2012 We show that more than two generations of quarks and leptons are required to have an anomaly free discrete R-symmetry larger than R-parity, provided that the supersymmetric Standard Model can be minimally embedded into a grand unified theory.
Evans, Jason L. +3 more
core +1 more source
Axion Like Particles and the Inverse Seesaw Mechanism [PDF]
, 2015 Light pseudoscalars known as axion like particles (ALPs) may be behind physical phenomena like the Universe transparency to ultra-energetic photons, the soft $\gamma$-ray excess from the Coma cluster, and the 3.5 keV line.
Carvajal, C. D. R. +3 more
core +2 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Journal of High Energy Physics, 2018 This paper tests a conjecture on discrete non-Abelian gauging of 3d N=4 $$ \mathcal{N}=4 $$ supersymmetric quiver gauge theories. Given a parent quiver with a bouquet of n nodes of rank 1, invariant under a discrete S n global symmetry, one can construct
Amihay Hanany, Anton Zajac
doaj +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source
Emergent discrete 3-form symmetry and domain walls
Physics Letters B, 2020 We show that axion models with the domain wall number k in (3+1) dimensions, i.e., periodic scalar field theories admitting k axion domain walls, exhibit an emergent Zk 3-form symmetry for k>1 in addition to a conventional Zk 0-form symmetry.
Yoshimasa Hidaka +2 more
doaj +1 more source
Discrete gauge symmetry anomalies
Physics Letters B, 1991 Abstract It has been recently argued that quantum gravity effects strongly violate all non-gauge symmetries. This would suggest that all low energy discrete symmetries should be gauge symmetries, either continuous or discrete. Acceptable continuous gauge symmetries are constrained by the condition they should be anomaly free.
Ibanez, L, Ross, G
openaire +1 more source
Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation
Advanced Engineering Materials, EarlyView.This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley +1 more source