Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Margaret Hawton"'
Publikováno v:
Physics, Vol 5, Iss 1, Pp 179-192 (2023)
The debate about the emptiness of space goes back to the prehistory of science and is epitomized by the Aristotelian ‘horror vacui’, which can be seen as the precursor of the ether, whose modern version is the dynamical quantum vacuum. In this pa
Externí odkaz:
https://doaj.org/article/7f9e43e41fe34d3aa6b58d2826ff3505
Publikováno v:
Physics, Vol 2, Iss 1, Pp 14-21 (2020)
We present a new perspective on the link between quantum electrodynamics (QED) and Maxwell’s equations. We demonstrate that the interpretation of the electric displacement vector D = ε 0 E , where E is the electric field vector and ε 0 is the per
Externí odkaz:
https://doaj.org/article/07173adbe3d740d88f0644d113c4a470
Autor:
Margaret Hawton
"It is well-known to those who know it" that single-photon interference experiments can be modeled classically [S. Barnett, arXiv:2207.14632 (2022)]. When a single-photon light pulse was split by a biprism good agreement with a classical fit was obta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f778709a8de702fde75786f2c6247366
http://arxiv.org/abs/2209.06140
http://arxiv.org/abs/2209.06140
Publikováno v:
Frontiers in Optics + Laser Science 2022 (FIO, LS).
Maxwell’s equations perfectly describe the spatio-temporal structure of the electromagnetic field also in vacuum. But the modern quantum vacuum can e. g. be polarized. We show that there is an intimate relation hidden in QED. © 2022 The Authors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::808c4919c85224678121161599dcf4b4
https://doi.org/10.1364/ls.2022.lm5f.6
https://doi.org/10.1364/ls.2022.lm5f.6
Autor:
Margaret Hawton
Publikováno v:
Physical Review A. 100
We extend classical Maxwell field theory to a first quantized theory of the photon by deriving a conserved Lorentz four-current whose zero component is a positive definite number density. Fields are real and their positive (negative) frequency parts
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7581450b1faecfcc3a677aa69f6d5cb8
https://doi.org/10.1103/physreva.100.012122
https://doi.org/10.1103/physreva.100.012122
Autor:
Vincent Debierre, Margaret Hawton
We show that the cylindrical symmetry of the eigenvectors of the photon position operator with commuting components, x, reflects the E(2) symmetry of the photon little group. The eigenvectors of x form a basis of localized states that have definite a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c25b85ddcc87cc33ce474df6a3208f8
http://arxiv.org/abs/1709.04884
http://arxiv.org/abs/1709.04884
Publikováno v:
E-Prints Complutense: Archivo Institucional de la UCM
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
Universidad Complutense de Madrid
E-Prints Complutense. Archivo Institucional de la UCM
instname
The properties of the vacuum are described by quantum physics including the response to external fields such as electromagnetic radiation. Of the two parameters that govern the details of the electromagnetic field dynamics in vacuum, one is fixed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dacf5446fcc11c5b7abedecb660049a8
http://eprints.ucm.es/44789/
http://eprints.ucm.es/44789/
Autor:
Vincent Debierre, Margaret Hawton
We find that biorthogonal quantum mechanics with a scalar product that counts both absorbed and emitted particles leads to covariant position operators with localized eigenvectors. In this manifestly covariant formulation the probability for a transi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51861b52a6cc333592b55611ce7203a5
Publikováno v:
Langmuir. 23:5622-5629
In this study, we use thermodynamic theory to develop a novel model that allows for the quantitative determination of the Gibbs free energy of adhesion for the initial bacterial attachment process. This model eliminates the need to calculate interfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa537242e3311fd7bf7879f910a7110c
https://doi.org/10.1021/la070099o
https://doi.org/10.1021/la070099o
Publikováno v:
Physical Review B. 62:R4829-R4832
Using an excitonic basis, we calculate the coherent intraband response of a photoexcited undoped semiconductor superlattice in combined along-axis static and terahertz electric fields. We find that the terahertz field drives the amplitude of the exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d34b5c0545ab6aa4114e708da75ea385
https://doi.org/10.1103/physrevb.62.r4829
https://doi.org/10.1103/physrevb.62.r4829