Results 91 to 100 of about 2,798 (204)

Towards a precise determination of the order of the phase transition in compact pure gauge QED

open access: yesPhysics Letters B, 1990
Abstract We present results obtained with a new numerical method, which in principle allows to determine the partition function of a lattice gauge theory, and its derivatives, with an accuracy dictated only by statistical fluctuations. We have used this method in order to determine the order of the phase transition of pure gauge, compact QED and we ...
V., Azcoiti, Di, Carlo, A. F., Grillo
openaire   +1 more source

Cavity Optomechanics with High Stress Silicon Nitride Films [PDF]

open access: yes, 2012
There has been a barrage of interest in recent years to marry the fields of nanomechanics and quantum optics. Mechanical systems provide sensitive and scalable architectures for sensing applications ranging from atomic force microscopy to gravity wave ...
Wilson, Dalziel Joseph
core   +1 more source

ISR corrections to associated HZ production at future Higgs factories

open access: yesPhysics Letters B, 2018
We evaluate the QED corrections due to initial state radiation (ISR) to associated Higgs boson production in electron–positron (e+e−) annihilation at typical energies of interest for the measurement of the Higgs properties at future e+e− colliders, such ...
Mario Greco   +4 more
doaj   +1 more source

A cavity-QED protocol for precise field sensing in the optical domain

open access: yes, 2019
6 pages, 3 ...
Lewis-Swan, Robert J.   +6 more
openaire   +2 more sources

High precision tests of QED and physics beyond the standard model [PDF]

open access: yes, 2020
. We study the four most significant high precision observables of QED -the anomalous electron and muon magnetic moments, the hydrogen Lamb shift and muonium hyperfine splitting-in the context of SU (2) ⊗ U (1) gauge-invariant effective Lagrangians.
Eduard Massó, Rafel Escribano
core  

Precision study of positronium and precision tests of the bound state quantum electrodynamics [PDF]

open access: yes, 2002
Despite its very short lifetime positronium provides us with a number of accurate tests of the bound state quantum electrodynamics (QED). In this note a brief overview of QED theory and precision experiments on the spectrum and annihilation decay of the ...
Karshenboim, S.
core   +2 more sources

Isospin Violating Hadronic Mass Splittings using Lattice QCD+QED [PDF]

open access: yes, 2019
The composition and structure of matter has excited scientific thought for millennia. One of the highlights of the previous century was the development of the theories of quantum chromodynamics (QCD) and quantum electrodynamics (QED), which reveal an ...
Koomi, Zachary
core  

Axion-like-particle decay in strong electromagnetic backgrounds

open access: yesJournal of High Energy Physics, 2019
The decay of a massive pseudoscalar, scalar and U(1) boson into an electron-positron pair in the presence of strong electromagnetic backgrounds is calculated.
B. King   +3 more
doaj   +1 more source

Combining QED and QCD transverse-momentum resummation for Z boson production at hadron colliders

open access: yesJournal of High Energy Physics, 2018
We consider the transverse-momentum (q T ) distribution of Z bosons produced in hadronic collisions. At small values of q T , we perform the analytic resummation of the logarithmically enhanced QED contributions up to next-to-leading logarithmic accuracy,
Leandro Cieri   +2 more
doaj   +1 more source

Proton Charge Radius and Precision Tests of QED

open access: yes, 2014
The "proton radius puzzle" remains unsolved since it was established in 2010. This paper summarizes the current state and gives an overview over upcoming experiments.
openaire   +2 more sources

Home - About - Disclaimer - Privacy