542 citations · 2.8k across the 71 of their papers we have counts for
5 papers · 1 filter
Optimal strategies for sending information through a quantum channel
E. Bagan, M. Baig, A. Brey +2
Quantum states can be used to encode the information contained in a direction, i.e., in a unit vector. We present the best encoding procedure when the quantum state is made up of $…
Effective Quarks and Their Interactions
Emili Bagan, Robin Horan, Martin Lavelle +1
This talk will summarise the progress we have made in our programme to both characterise and construct charges in gauge theories. As an application of these ideas we will see how t…
Electrons and Photons: Fact not Fiction
Emili Bagan, Martin Lavelle, David McMullan
The particle Fock space of the matter fields in QED can be constructed using the free creation and annihilation operators. However, these particle operators are not, even at asympt…
Charged Matter: Physics and Renormalisation
Emili Bagan, Martin Lavelle, David McMullan
Descriptions of the ground state in unbroken gauge theories with charged particles are discussed. In particular it is shown that the on-shell Green's functions and S-matrix element…
The Structure of the QCD Potential in 2+1 Dimensions
E. Bagan, M. Lavelle, D. McMullan
We calculate the screening and anti-screening contributions to the inter-quark potential in 2+1 dimensions, which is relevant to the high temperature limit of QCD. We demonstrate t…