Results 81 to 90 of about 525,082 (280)

Some Recent Advances in Bound-State Quantum Electrodynamics

, 2005
We discuss recent progress in various problems related to bound-state quantum electrodynamics: the bound-electron g factor, two-loop self-energy corrections and the laser-dressed Lamb shift.
Appelquist S., Bonciani P., Bonciani P., Caswell G.P., Cohen-Tannoudji R., Draganić J.R., Drake R.A., Eides V.A., Eides V.A., Eikema J., Evers U.D., Grotch R.A., Hughes T., Häffner T., Ivanov S.G., J Evers, Jentschura J., Jentschura J., Karplus N.M., Karshenboim S.G., Kinoshita W.B., Mastrolia E., Melnikov T.V., Pachucki U.D., Pachucki U.D., Pineda, Reichert M., U D Jentschura, Verdú S., Yerokhin P., Yerokhin P.   +30 more
core   +2 more sources

Path Integral Spin Dynamics for Quantum Paramagnets

Advanced Physics Research, EarlyView.
The study has developed a path integral method, which is a classical approach, combined with atomistic spin dynamics simulations to calculate thermal quantum expectation values. This method can handle Hamiltonians with non‐linear terms, which are important for describing uniaxial anisotropies and mechanical constraints.
Thomas Nussle, Pascal Thibaudeau, Stam Nicolis   +2 more
wiley   +1 more source

$\pi^+\pi^+$ and $\pi^+\pi^-$ colliding in noncommutative space

, 2012
By studying the scattering process of scalar particle pion on the noncommutative scalar quantum electrodynamics, the non-commutative amendment of differential scattering cross-section is found, which is dependent of polar-angle and the results are ...
A. Alboteanu, A. Connes, C.-S. Chu, C.-S. Chu, H.S. Snyder, I. Hinchliffe, I.F. Riad, I.Ya. Aref’eva, J. Hewett, J. Hewett, J. Wang, J.M. Carmona, Jianhua Wang, K. Li, K. Li, K. Li, K. Li, Kai Ma, Kang Li, M. Chaichian, M. Chaichian, M. Chaichian, M. Chaichian, M.M. Sheikh-Jabbari, M.M. Sheikh-Jabbari, M.M. Sheikh-Jabbari, M.R. Douglas, N. Seiberg, N. Seiberg, S. Dulat, Sayipjamal Dulat, T.G. Rizzo, T.H. Heng, X. Calmet, X. Calmet, X. Calmet, Y. Liao, Y. Liao, Y. Liao, Yi Yuan   +39 more
core   +1 more source

The Importance of Boundary Conditions in Quantum Mechanics [PDF]

, 2003
We discuss the role of boundary conditions in determining the physical content of the solutions of the Schrodinger equation. We study the standing-wave, the ``in,'' the ``out,'' and the purely outgoing boundary conditions. As well, we rephrase Feynman's $
A. F. J. Siegert, E. Brändas, E. Engdahl, E. Hernńdez, G. Gamow, J. Preskill, L. I. Schiff, M. Baldo, N. Dunford, R. Madrid de la, R. Madrid de la, R. Madrid de la, R. Madrid de la, R. P. Feynman, R. Peierls, R. Penrose, R. Ritz   +16 more
core   +3 more sources

Quantum Anomalies in Condensed Matter

Advanced Physics Research, EarlyView.
Quantum materials provide a fertile ground in which to test and realize quantum anomalies predicted by quantum field theory. Quantum anomalies need to be canceled globally, however, quantum states with a quantum anomaly can exist at the boundary of topological materials.
Michael T. Pettes, Shi‐Zeng Lin, Elizabeth A. Peterson, Jian‐Xin Zhu, Laurel E. Winter, Johanna C. Palmstrom, Jinkyoung Yoo, Nicholas S. Sirica, Prashant Padmanabhan, Priscila F. S. Rosa, Sean M. Thomas, Avadh Saxena   +11 more
wiley   +1 more source

On Quantum Corrections to Chern-Simons Spinor Electrodynamics [PDF]

, 1997
We make a detailed investigation on the quantum corrections to Chern-Simons spinor electrodynamics. Starting from Chern-Simons spinor quantum electrodynamics with the Maxwell term $-1/(4\gamma){\int}d^3x F_{\mu\nu}F^{\mu\nu}$ and by calculating the ...
Chaichian, M., Chen, W. F., Fainberg, V. Ya.   +2 more
core   +2 more sources

The stability of matter and quantum electrodynamics [PDF]

Current Developments in Mathematics, 2003
A survey of the stability of matter problem is given, starting with the stability of the hydrogen atom. The stablity of bulk matter with Coulomb potentials, with or without relativistic mechanics, and with or without magnetic fields is discussed. The final section discusses the stability of matter in a relativistic model with the Dirac operator as ...
openaire   +3 more sources

Quantum quincunx in cavity quantum electrodynamics [PDF]

Physical Review A, 2003
We introduce the quantum quincunx, which physically demonstrates the quantum walk and is analogous to Galton's quincunx for demonstrating the random walk. In contradistinction to the theoretical studies of quantum walks over orthogonal lattice states, we introduce quantum walks over nonorthogonal lattice states (specifically, coherent states on a ...
Sanders, BC, Bartlett, SD, Tregenna, B, Knight, PL   +3 more
openaire   +4 more sources

The Curious Concept That Almost Nobody Seemed to Care About at First: Virtual Particles in the Post‐War Period**

Berichte zur Wissenschaftsgeschichte, EarlyView.
Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley   +1 more source

Advancing Bipolar Electrochemistry for Targeted Deposition of Biocompatible Polymers in Electrolyte‐Free Solutions via Finite Element Modeling

ChemElectroChem, Volume 12, Issue 6, March 15, 2025.
Modeling and experimental data for the synthesis and deposition of conducting polymers in high‐resistance solutions enabled by bipolar electrochemistry indicate the reaction control via homogenous rather than heterogeneous electron transfer conventionally postulated for bipolar electrochemical systems.
Michal Wagner, Áine Brady, Oisín F. Doyle, Robert J. Forster   +3 more
wiley   +1 more source