Results 91 to 100 of about 189,131 (288)

Proton Decay and the Planck Scale

, 2004
Even without grand unification, proton decay can be a powerful probe of physics at the highest energy scales. Supersymmetric theories with conserved R-parity contain Planck-suppressed dimension 5 operators that give important contributions to nucleon ...
Larson, Daniel T.
core   +2 more sources

Nonreciprocal Charge Transport in an Iron‐Based Superconductor with Broken Inversion Symmetry Engineered by a Hydrogen‐Concentration Gradient

Advanced Science, EarlyView.
Concentration gradients can serve as a universal platform for breaking spatial inversion symmetry. We demonstrate this concept by observing nonreciprocal electrical transport—a sensitive probe of inversion‐symmetry breaking—in the iron‐based superconductor Sm1111 with an engineered hydrogen gradient.
Takayuki Nagai, Yukito Nishio, Jumpei Matsumoto, Kota Hanzawa, Hidenori Hiramatsu, Hideo Hosono, Tsuyoshi Kimura   +6 more
wiley   +1 more source

Excited nucleon spectrum using a non-perturbatively improved clover fermion action

, 2002
We discuss the extraction of negative-parity baryon masses from lattice QCD calculations. The mass of the lowest-lying negative-parity $J = 1/2^{-}$ state is computed in quenched lattice QCD using an ${\cal O}(a)$-improved clover fermion action, and a ...
Best, Bowler, C.M Maynard, D Pleiter, D.G Richards, Edwards, G Schierholz, Guagnelli, Göckeler, Göckeler, Göckeler, Labrenz, Lacock, Lee, Lee, Lee, Leinweber, Leinweber, Lüscher, M Göckeler, P.E.L Rakow, Pleiter, R Horsley, Richards, Sasaki, Sommer   +25 more
core   +1 more source

Artificial Intelligence Predictions in Huge Chemical Spaces: Chiroptical Properties of [6]‐helicene Family

Advanced Science, EarlyView.
This study shows that a local, data‐driven AI model can accurately predict diverse optical and chiroptical properties of [6]helicenes using information from close structural neighbours. Combined with genetic algorithms, it enables inverse design for tailored properties, establishing practical structure–property rules for efficient molecular discovery ...
Rafael G. Uceda, Sandra Míguez‐Lago, Carlos M. Cruz, Boris Pérez‐Cañedo, Alfonso Gijón, Luis Álvarez de Cienfuegos, Antonio J. Mota, Delia Miguel, Juan M. Cuerva   +8 more
wiley   +1 more source

Reflection parity and space-time parity photonic conservation laws in parametric nonlinear optics

Physical Review Research
Conservation laws are some of the most generic and useful concepts in physics. In nonlinear optical parametric processes, conservation of photonic energy, momenta and parity often lead to selection rules, restricting the allowed polarization and ...
Gavriel Lerner, Matan Even Tzur, Ofer Neufeld, Avner Fleischer, Oren Cohen   +4 more
doaj   +1 more source

Alternative searches for parity violation in atomic physics

Physics Letters B, 1980
Abstract The effects of parity-violating weak neutral currents on two-photon and autoionization transitions in atoms are considered.
N.D. Hari Dass, A.R.P. Rau
openaire   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Parity Doubling in QCD Thermodynamics

Proceedings, 2019
Motivated by the recent lattice study by FASTSUM collaboration, effective masses of the baryon parity-doublers are shown for various pion masses.
Chihiro Sasaki, David Blaschke, Pok Man Lo, Michał Marczenko, Kenji Morita, Krzysztof Redlich   +5 more
doaj   +1 more source

Exploring Quantum Support Vector Regression for Predicting Hydrogen Storage Capacity of Nanoporous Materials

Advanced Intelligent Discovery, EarlyView.
In this study we employed support vector regressor and quantum support vector regressor to predict the hydrogen storage capacity of metal–organic frameworks using structural and physicochemical descriptors. This study presents a comparative analysis of classical support vector regression (SVR) and quantum support vector regression (QSVR) in predicting ...
Chandra Chowdhury
wiley   +1 more source

Constraining P and T violating forces with chiral molecules

Physical Review Research
New sources of parity and time-reversal violation are predicted by well motivated extensions of the Standard Model and can be effectively probed by precision spectroscopy of atoms and molecules.
Chaja Baruch, P. Bryan Changala, Yuval Shagam, Yotam Soreq   +3 more
doaj   +1 more source