Gauge invariance induced relations and the equivalence between distinct approaches to NLSM amplitudes
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)177
Abstract: A bstractIn this paper, we derive generalized Bern-Carrasco-Johansson (BCJ) relations for color-ordered Yang-Mills amplitudes by imposing gauge invariance conditions and dimensional reduction appropriately on the new discovered graphic expansion of Einstein-Yang-Mills amplitudes. These relations are… read more here.
Keywords: gauge invariance; invariance induced; invariance; induced relations ... See more keywords
Uniqueness from gauge invariance and the Adler zero
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep09(2019)084
Abstract: Abstract In this paper we provide detailed proofs for some of the uniqueness results presented in ref. [1]. We show that: (1) Yang-Mills and General Relativity tree-level amplitudes are completely determined by gauge invariance in… read more here.
Keywords: uniqueness gauge; invariance; adler zero; gauge invariance ... See more keywords
Observation of gauge invariance in a 71-site Bose-Hubbard quantum simulator.
Sign Up to like & getrecommendations! Published in 2020 at "Nature"
DOI: 10.1038/s41586-020-2910-8
Abstract: The modern description of elementary particles, as formulated in the standard model of particle physics, is built on gauge theories1. Gauge theories implement fundamental laws of physics by local symmetry constraints. For example, in quantum… read more here.
Keywords: physics; gauge invariance; observation gauge; quantum ... See more keywords
On the gauge invariance of cosmological gravitational waves
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2020/03/014
Abstract: The issue of the gauge invariance of gravitational waves arises if they are produced in the early universe at second-order in perturbation theory. We address it by dividing the discussion about the gauge invariance in… read more here.
Keywords: gauge invariance; invariance cosmological; gravitational waves; cosmology ... See more keywords
Breakdown of gauge invariance in ultrastrong-coupling cavity QED
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.98.053819
Abstract: We revisit the derivation of Rabi- and Dicke-type models, which are commonly used for the study of quantum light-matter interactions in cavity and circuit QED. We demonstrate that the validity of the two-level approximation, which… read more here.
Keywords: gauge invariance; gauge; ultrastrong coupling; breakdown gauge ... See more keywords
p^·A^ vs x^·E^ : Gauge invariance in quantum optics and quantum field theory
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.065014
Abstract: We compare the predictions of the fundamentally motivated minimal coupling ($\hat{\boldsymbol{p}}\cdot\hat{\boldsymbol{A}}$) and the ubiquitous dipole coupling ($\hat{\boldsymbol{x}}\cdot\hat{\boldsymbol{E}}$) in the light-matter interaction. By studying the light-matter interaction for hydrogen-like atoms we find that the dipole approximation… read more here.
Keywords: gauge invariance; invariance quantum; hat boldsymbol; quantum optics ... See more keywords
Background Independence and Gauge Invariance in General Relativity Part 1 - The Classical Theory
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14102083
Abstract: The implications of the principles of general and manifest covariance, together with those of the objectivity principle, are considered for the purpose of establishing a DeDonder–Weyl-type Hamiltonian variational formulation for classical general relativity. Based on… read more here.
Keywords: invariance general; gauge invariance; background independence; relativity ... See more keywords