Results 41 to 50 of about 1,131,097 (191)

Topology and index theorem with a generalized Villain lattice action – a test in 2d

open access: yesPhysics Letters B, 2019
Using 2-d U(1) lattice gauge theory we study two definitions of the topological charge constructed from a generalized Villain action and analyze the implementation of the index theorem based on the overlap Dirac operator.
Christof Gattringer, Pascal Törek
doaj   +1 more source

An artificial neural network application on nuclear charge radii

open access: yes, 2012
The artificial neural networks (ANNs) have emerged with successful applications in nuclear physics as well as in many fields of science in recent years.
Akkoyun, S.   +3 more
core   +1 more source

Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices

open access: yes, 2008
We have studied the ground state of the one dimensional Hubbard superlattice structures with different unit cell sizes in the presence of electric field.
Bibhas Bhattacharyya   +5 more
core   +1 more source

Superconductivity in charge Kondo systems

open access: yes, 2004
We present a theory of superconductivity in charge Kondo systems, materials with resonant quantum valence fluctuations, in the regime where the transition temperature is comparable to the charge Kondo resonance.
A. A. Abrikosov   +7 more
core   +1 more source

CHARGED LEPTON FLAVOR PHYSICS AND EXTRA DIMENSIONS [PDF]

open access: yesModern Physics Letters A, 2007
We estimate the charged lepton electric dipole moments and the branching ratios of radiative lepton flavor violating decays in the framework of the two Higgs doublet model with the inclusion of two extra dimensions. Here, we consider that the new Higgs doublet is accessible to one of the extra dimensions with a Gaussian profile and the fermions are ...
openaire   +2 more sources

Understanding charge radii with machine learning: Discovering physics expressions

open access: yesPhysics Letters B
We introduce a robust, interpretable machine learning (ML) framework that combines numerical regression for high-accuracy predictions with symbolic regression to uncover the underlying physics.
B. Maheshwari, P. Van Isacker
doaj   +1 more source

The effect of charge fluctuation on a normal-superconducting-normal single-electron transistor

open access: yes, 2001
We theoretically investigate quantum fluctuation of charge between even and odd states of a normal-superconducting-normal single-electron tunneling transistor.
Chou   +13 more
core   +1 more source

Probing new physics with charge asymmetries in 2 same-sign leptons plus jets final states at the LHC

open access: yesJournal of High Energy Physics
We study the impact of new physics models in the charge asymmetry defined for LHC final states consisting of two same-sign leptons (2SSl, with l = e, μ) plus jets (N jets ≥ 2), with a center-of-mass energy of s $$ \sqrt{s} $$ = 13 TeV, where the main SM ...
Ernesto Arganda   +4 more
doaj   +1 more source

Reflections on Physics Education and Communication with Tibetan Monastics

open access: yesFrontiers in Communication, 2021
Physics education research, a field that is now over 100 years old, has made it clear: the key to teaching physics successfully is to prioritize getting the concepts across, and the mathematical representation (“laws”) can come later.
Judith Beck   +7 more
doaj   +1 more source

Discovery of the Color Degree of Freedom in Particle Physics: a Personal Perspective

open access: yes, 2008
I review the main features of the color charge degree of freedom in particle physics, sketch the paradox in the early quark model that led to color, give a personal perspective on the discovery of color and describe the introduction of the gauge theory ...
Greenberg, O. W.
core   +1 more source

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