Results 81 to 90 of about 95,918 (256)

The renormalization of charge and temporality in quantum electrodynamics [PDF]

, 2008
In this article it is intended a closer look at the renormalization procedure used in quantum electrodynamics to cope with the divergent integrals that appear in higher-order calculations within the theory.
Bacelar Valente, Mario
core  

The Logarithmic Triviality of Compact QED Coupled to a Four Fermi Interaction

, 2005
This is the completion of an exploratory study of Compact lattice Quantum Electrodynamics with a weak four-fermi interaction and four species of massless fermions. In this formulation of Quantum Electrodynamics massless fermions can be simulated directly
Costas G. Strouthos, J. Frohlich, John B. Kogut, M. E. Fisher, M. N. Barber, R. Kenna   +5 more
core   +2 more sources

Time-Dependent Effective Hamiltonians for Light–Matter Interactions

Entropy
In this paper, we present a systematic approach to building useful time-dependent effective Hamiltonians in molecular quantum electrodynamics. The method is based on considering part of the system as an open quantum system and choosing a convenient ...
Aroaldo S. Santos, Pedro H. Pereira, Patrícia P. Abrantes, Carlos Farina, Paulo A. Maia Neto, Reinaldo de Melo e Souza   +5 more
doaj   +1 more source

Easy-plane QED3’s in the large N f limit

Journal of High Energy Physics, 2019
We consider Quantum Electrodynamics in 2 + 1 dimensions with N f fermionic or bosonic flavors, allowing for interactions that respect the global symmetry U(N f /2)2. There are four bosonic and four fermionic fixed points, which we analyze using the large
Sergio Benvenuti, Hrachya Khachatryan
doaj   +1 more source

Double Helical Plasmonic Antennas

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Experimentally simulating the dynamics of quantum light and matter at deep-strong coupling

Nature Communications, 2017
Realising deep-strong coupling phenomena for interacting light-matter systems remains an experimental challenge. Here, Langford et al. employ a circuit quantum electrodynamics chip with moderate coupling between a resonator and transmon qubit to realise ...
N. K. Langford, R. Sagastizabal, M. Kounalakis, C. Dickel, A. Bruno, F. Luthi, D. J. Thoen, A. Endo, L. DiCarlo   +8 more
doaj   +1 more source

Comparison of Quantum and Classical Local-field Effects on Two-Level Atoms in a Dielectric

, 2009
The macroscopic quantum theory of the electromagnetic field in a dielectric medium interacting with a dense collection of embedded two-level atoms fails to reproduce a result that is obtained from an application of the classical Lorentz local-field ...
D. Marcuse, J. D. Jackson, J. Kästel, M. Born, M. Sargent, Michael E. Crenshaw, N. Bloembergen, P. W. Milonni, R. W. Boyd, V. L. Ginzburg, W. H. Louisell   +10 more
core   +1 more source

The Realization of Multidirectional, Free‐Standing 3D Plasmonic Nanostructures via 3D Nanoprinting: A Case Study of Fractal Antennas

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
Free‐standing plasmonic gold‐based fractal antennas are fabricated by 3D nanoprinting, employing focused electron beam induced deposition and an optimized purification method to remove carbon while conserving structural fidelity. Simulation and experiment show broadband plasmonic activity, including customizable polarizability, thereby paving the way ...
Verena Reisecker, Robert Winkler, Ulrich Hohenester, Evelin Fisslthaler, Daniel Knez, Gerald Kothleitner, Georg Haberfehlner   +6 more
wiley   +1 more source

To B or not to B: primordial magnetic fields from Weyl anomaly

Journal of High Energy Physics, 2018
The quantum effective action for the electromagnetic field in an expanding universe has an anomalous dependence on the scale factor of the metric arising from virtual charged particles in the loops.
André Benevides, Atish Dabholkar, Takeshi Kobayashi   +2 more
doaj   +1 more source

Emerging Device Applications From Strong Light–Matter Interactions in 2D Materials

Advanced Science, Volume 13, Issue 17, 23 March 2026.
Two‐dimensional semiconductors enable extremely compact optoelectronic devices such as solar cells, sensors, LEDs, and lasers. Their strong light–matter interactions allow efficient light emission, detection, and energy conversion. This review article discusses the recent progress in integrating these materials with optical cavities and nanostructures ...
Janani Archana K, Kumar Shwetabh, Reyas Ali, Ramji Velayutham, Koustav Das, Abhishek Mondal, Prashant Kumar, Surendra B. Anantharaman   +7 more
wiley   +1 more source