542 citations · 2.8k across the 71 of their papers we have counts for
4 papers · 1 filter
Charged Particles: A Builder's Guide
Emili Bagan, Robin Horan, Martin Lavelle +2
It is sometimes claimed that one cannot describe charged particles in gauge theories. We identify the root of the problem and present an explicit construction of charged particles.…
The Structure of Screening in QED
Emili Bagan, Martin Lavelle, David McMullan +1
The possibility of constructing charged particles in gauge theories has long been the subject of debate. In the context of QED we have shown how to construct operators which have a…
Communicating a direction using spin states
E. Bagan, M. Baig, R. Munoz-Tapia
The communication of directions using quantum states is a useful laboratory test for some basic facts of quantum information. For a system of spin-1/2 particles there are different…
Aligning Reference Frames Using Quantum States
E. Bagan, M. Baig, R. Munoz-Tapia
We analyze the problem of sending, in a single transmission, the information required to specify an orthogonal trihedron or reference frame through a quantum channel made out of N…