Results 81 to 90 of about 264,462 (334)

Inflaton as a pseudo-Nambu-Goldstone boson

Physics Letters B, 2023
In the realistic model of cosmic inflation the inflaton potential should be flat and stable under quantum corrections. It is natural to imagine that there is some symmetry behind and an idea of the inflaton as a Nambu-Goldstone boson of spontaneous ...
Noriaki Kitazawa
doaj   +1 more source

Charge-Symmetry Breaking and the Two-Pion-Exchange Two-Nucleon Interaction

, 2003
Charge-symmetry breaking in the nucleon-nucleon force is investigated within an effective field theory, using a classification of isospin-violating interactions based on power-counting arguments.
A. Manohar, A. Nogga, C. Ordóñez, C. Ordóñez, C. Ordóñez, D.O. Riska, D.R. Entem, E. Epelbaoum, E. Epelbaum, E. Epelbaum, G. L. Payne, G.A. Miller, G.A. Miller, G.A. Miller, G.Q. Li, H. Georgi, J. L. Friar, J.-L. Ballot, J.A. Niskanen, J.L. Friar, J.L. Friar, J.L. Friar, J.L. Friar, J.L. Friar, J.V. Noble, M.C.M. Rentmeester, M.C.M. Rentmeester, N. Kaiser, P.F. Bedaque, P.G. Blunden, R. Machleidt, R. Machleidt, R.A. Brandenburg, R.B. Wiringa, S. A. Coon, S. Weinberg, S. Weinberg, S. Weinberg, S. Weinberg, S. Weinberg, S.A. Coon, S.A. Coon, S.A. Coon, S.A. Coon, S.C. Pieper, S.C. Pieper, U. van Kolck, U. van Kolck, U. van Kolck, U. van Kolck, U. van Kolck, U. van Kolck, Y. Tomozawa, Y. Wu, Y. Wu   +54 more
core   +2 more sources

Flavor Symmetry Breaking and Strangeness in the Nucleon [PDF]

, 2002
We suggest that breaking of SU(3) flavor symmetry mainly resides in the baryon wave--functions while the charge operators have no (or only small) explicit symmetry breaking components.
Weigel, H.
core   +2 more sources

Lessons Learned From a Delayed‐Start Trial of Modafinil for Freezing of Gait in Parkinson's Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Freezing of gait (FOG) in people with Parkinson's disease (PwPD) is debilitating and has limited treatments. Modafinil modulates beta/gamma band activity in the pedunculopontine nucleus (PPN), like PPN deep brain stimulation. We therefore tested the hypothesis that Modafinil would improve FOG in PwPD.
Tuhin Virmani, Lakshmi Pillai, Reid D. Landes, Aliyah Glover, Shannon Doerhoff, Jennifer Kleiner, Mitesh Lotia, Rohit Dhall, Edgar Garcia‐Rill   +8 more
wiley   +1 more source

Breaking of scaling symmetry by massless scalar on de Sitter

Physics Letters B, 2019
We study the response of a classical massless minimally coupled scalar to a static point scalar charge on de Sitter. By considering explicit solutions of the problem we conclude that – even though the dynamics formally admits dilatation (scaling ...
D. Glavan, S.P. Miao, T. Prokopec, R.P. Woodard   +3 more
doaj   +1 more source

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

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

Spontaneous symmetry breaking in tensor theories

Journal of High Energy Physics, 2019
In this work we study spontaneous symmetry breaking patterns in tensor models. We focus on the patterns which lead to effective matrix theories transforming in the adjoint of U(N).
P. Diaz, J. A. Rosabal
doaj   +1 more source

Quark Mass Matrices in the A_4 Model

, 2002
If the standard model of quark interactions is supplemented by a discrete A_4 symmetry (which may be relevant for the lepton sector), the spontaneous breaking of the electroweak gauge symmetry allows arbitrary quark masses, but all mixing angles are ...
ERNEST MA, Ma E., Particle Data Group
core   +1 more source

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

Category of SET orders

Journal of High Energy Physics
We propose the representation principle to study physical systems with a given symmetry. In the context of symmetry enriched topological orders, we give the appropriate representation category, the category of SET orders, which include SPT orders and ...
Tian Lan, Gen Yue, Longye Wang
doaj   +1 more source