Results 81 to 90 of about 90,636 (199)

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

Topological phase transitions in the non-Abelian honeycomb lattice

, 2010
Ultracold Fermi gases trapped in honeycomb optical lattices provide an intriguing scenario, where relativistic quantum electrodynamics can be tested. Here, we generalize this system to non-Abelian quantum electrodynamics, where massless Dirac fermions ...
, A Bermudez, A Kubasiak, Bloch I, Bücker R, Chen X Dong S Liu J-M, Dutta A Singh R R P Divakaran U, Eckardt A Hauke Ph Soltan-Panahi P Becker C Sengstock K Lewenstein M, Goldman N, Goldman N, Hammerer K Sørensen A Polzik E S, Jaksch D, Klein A, Kohmoto M, Li F, Lin Y-J, M A Martin-Delgado, M Lewenstein, N Goldman, Polini M, Trotzky S Pollet L Gerbier F Schnorrberger U Bloch I Prokof'ev N V Svistunov B Troyer M, Wen X, Wunsch B, Ye J Zhang J Liu W Zhang K Li Y Zhang W   +23 more
core   +1 more source

Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2

Advanced Materials, Volume 38, Issue 19, 1 April 2026.
Spin chirality plays a central role in quantum magnetism, governing spin winding and generating real‐space Berry phases. We propose the intriguing concept of current‐switching spin chirality and demonstrate it via unconventional intrinsic self‐spin‐orbit‐torque in pristine Co1/3TaS2, purely by electrical current and with high energy efficiency.
Kai‐Xuan Zhang, Seungbok Lee, Woonghee Cho, Je‐Geun Park   +3 more
wiley   +1 more source

A Physically-Motivated Quantisation of the Electromagnetic Field on Curved Spacetimes

Entropy, 2019
Recently, Bennett et al. (Eur. J. Phys. 37:014001, 2016) presented a physically-motivated and explicitly gauge-independent scheme for the quantisation of the electromagnetic field in flat Minkowski space.
Ben Maybee, Daniel Hodgson, Almut Beige, Robert Purdy   +3 more
doaj   +1 more source

Offshell quantum electrodynamics

Journal of Physics: Conference Series, 2013
More than twenty years have passed since the threads of the `proper time formalism' in covariant classical and quantum mechanics were brought together to construct a canonical formalism for the relativistic mechanics of many particles. Drawing on the work of Fock, Stueckelberg, Nambu, Schwinger, and Feynman, the formalism was raised from the status of ...
Land, M. C., Horwitz, L. P.
openaire   +2 more sources

Ultrafast Terahertz Dynamics in Hybrid Van der Waals Superconductor‐Topological Insulator Metamaterials

Advanced Photonics Research, Volume 7, Issue 4, April 2026.
Hybrid van der Waals topological–superconducting heterostructures enable cryogenically compatible, highly tunable THz photonic circuits. We model ultrafast THz modulation in proximitized (Bi2‐xInx)Se3–BSCCO devices, capturing indium‐driven topological phase transitions and ultrafast superconductor dynamics.
Samane Kalhor, Kaveh Delfanazari
wiley   +1 more source

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

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

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

No Drama Quantum Theory?

, 2005
This work builds on the following result of a previous article (quant-ph/0509044): the matter field can be naturally eliminated from the equations of the scalar electrodynamics (the Klein-Gordon-Maxwell electrodynamics) in the unitary gauge.
ANDREY AKHMETELI, Aspelmeyer A., Bohm D., Deumens E., Itzykson C., Landau L. D., Lochak G.   +6 more
core   +2 more sources