Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Don Colladay"'
Autor:
Don Colladay, Leo Law
Publikováno v:
Physics Letters B, Vol 795, Iss , Pp 457-461 (2019)
The Schwarzschild solution is used as a background metric to analyze the effects of a vector field undergoing spontaneous symmetry breaking in a Standard Model Extension Bumblebee Model. The corresponding back-reaction of the background field expecta
Externí odkaz:
https://doaj.org/article/fa8154ad937a4945b030439959259a8d
Autor:
Don Colladay
Publikováno v:
Physics Letters B, Vol 772, Iss C, Pp 694-698 (2017)
A new perspective on the classical mechanical formulation of particle trajectories in Lorentz-violating theories is presented. Using the extended hamiltonian formalism, a Legendre Transformation between the associated covariant lagrangian and hamilto
Externí odkaz:
https://doaj.org/article/615a4a5f2cf24434b8bb2fd96a604866
Autor:
Don Colladay, John Eric Goff
Publikováno v:
American Journal of Physics. 88:711-722
The second-order perturbative Stark effect on the ground state of hydrogen is a typical example presented in many standard texts on quantum mechanics. Some texts miss the fact that the scattering states are significant contributors to the perturbativ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d57e820394d49418d68c370a5ee6006
https://doi.org/10.1119/10.0001428
https://doi.org/10.1119/10.0001428
Autor:
Don Colladay
Publikováno v:
CPT and Lorentz Symmetry.
A model for spontaneous symmetry breaking using a specific form of the bumblebee model is analyzed in the context of a Schwarzschild background metric. The resulting back reaction of the symmetry-breaking field on the metric is computed to second ord
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7f6ad5e5c4b0334d0c6b6fbca762869
https://doi.org/10.1142/9789811213984_0046
https://doi.org/10.1142/9789811213984_0046
Autor:
Leo Law, Don Colladay
Publikováno v:
Physics Letters
Physics Letters B, Vol 795, Iss, Pp 457-461 (2019)
Physics Letters B, Vol 795, Iss, Pp 457-461 (2019)
The Schwarzschild solution is used as a background metric to analyze the effects of a vector field undergoing spontaneous symmetry breaking in a Standard Model Extension Bumblebee Model. The corresponding back-reaction of the background field expecta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26bca186cc6dd16fb6094b9f8fec76f8
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Autor:
Don Colladay
Lorentz violation frequently induces modified dispersion relations that can yield space-like states that impede the standard quantization procedures. In certain cases, an extended hamiltonian formalism can be used to define observer-covariant normali
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3a759686df99b5b340360bd78bc531a
http://arxiv.org/abs/1710.02479
http://arxiv.org/abs/1710.02479
Publikováno v:
Physical Review D. 96
We study CPT and Lorentz violation in the electroweak gauge sector of the Standard Model in the context of the Standard-Model Extension. In particular, we consider the Lorentz-violating and CPT-odd Chern-Simons like parameter for the W boson, which i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48233b3acb44831d90a1e560e3bc69a0
https://doi.org/10.1103/physrevd.96.035034
https://doi.org/10.1103/physrevd.96.035034
Autor:
Don Colladay
Publikováno v:
CPT and Lorentz Symmetry.
CPT-Violating photons are well-known to have problems with energy positivity in certain cases and therefore have not been convincingly quantized to date. We find that by adding a small mass term, consistent with experimental bounds, the theory can be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8cdd4566c41774a3008de443c427007
https://doi.org/10.1142/9789813148505_0040
https://doi.org/10.1142/9789813148505_0040
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
We perform the covariant canonical quantization of the CPT- and Lorentz-symmetry-violating photon sector of the minimal Standard-Model Extension, which contains a general (timelike, lightlike, or spacelike) fixed background tensor $k_{AF}^\mu$. Well-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd3fe12feacd8ee35a33685e62dd4310
https://hdl.handle.net/10400.1/13256
https://hdl.handle.net/10400.1/13256
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The source of CPT-violation in the photon sector of the Standard Model Extension arises from a Chern-Simons-like contribution that involves a coupling to a fixed background vector field $k_{AF}^\mu$. These Lorentz- and CPT-violating photons have well
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0238c929ed99d74a278d170b458442b9
https://doi.org/10.1103/physrevd.93.125007
https://doi.org/10.1103/physrevd.93.125007