Zobrazeno 1 - 10
of 25
pro vyhledávání: '"George Zahariade"'
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-30 (2022)
Abstract We study kink-antikink scattering in the sine-Gordon model in the presence of interactions with an additional scalar field, ψ, that is in its quantum vacuum. In contrast to the classical scattering, now there is quantum radiation of ψ quan
Externí odkaz:
https://doaj.org/article/47dc700cf70747ae98a62fc67f870f92
Autor:
Guido D’Amico, Nemanja Kaloper, Antonio Padilla, David Stefanyszyn, Alexander Westphal, George Zahariade
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 9, Pp 1-19 (2017)
Abstract Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections. The original proposal was based on using global Lagrange multiplier
Externí odkaz:
https://doaj.org/article/94faa786b200402882539a2b105d7708
Publikováno v:
Physical Review
We develop a formalism to calculate the response of a model gravitational wave detector to a quantized gravitational field. Coupling a detector to a quantum field induces stochastic fluctuations ("noise") in the length of the detector arm. The statis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6358740905115428ed12991338dc714
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physical Review
We investigate a quantum vacuum state for $1 + 1$ dimensional de Sitter space, corresponding to a region within a perfectly reflecting symmetric box of fixed physical size. We find that a particle detector inside the box registers zero response, impl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f8b7c931269db73dd9fec854331ecd4
http://repo.scoap3.org/api
http://repo.scoap3.org/api
Publikováno v:
Physical Review
We consider quantum phase transitions with global symmetry breakings that result in the formation of topological defects. We evaluate the number densities of kinks, vortices, and monopoles that are produced in $d=1,2,3$ spatial dimensions respectivel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0356f3f6186ac8c3de82081b101e8da1
http://repo.scoap3.org/api
http://repo.scoap3.org/api
The Szil\'ard engine is a mechanism (akin to Maxwell's demon) for converting information into energy, which seemingly violates the second law of thermodynamics. Originally a classical thought experiment, it was extended to a quantized treatment by Zu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c5880031db19b8c75d2a1216f372bcd
http://arxiv.org/abs/2011.01180
http://arxiv.org/abs/2011.01180
Publikováno v:
Physical Review Letters
For the purpose of analyzing observed phenomena, it has been convenient, and thus far sufficient, to regard gravity as subject to the deterministic principles of classical physics, with the gravitational field obeying Newton's law or Einstein's equat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::828e624569a2e5c656d8b20b6ce4b33b
https://pubmed.ncbi.nlm.nih.gov/34477439
https://pubmed.ncbi.nlm.nih.gov/34477439
Publikováno v:
Physical Review
After a quantum phase transition the quantum vacuum can break up to form classical topological defects. We examine this process for scalar field models with $Z_2$ symmetry for different quench rates for the phase transition. We find that the number d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ba17d652f5b9d1eb4b61a72130a12b9
http://arxiv.org/abs/2004.07249
http://arxiv.org/abs/2004.07249
Autor:
Alexander Westphal, Antonio Padilla, Guido D'Amico, David Stefanyszyn, George Zahariade, Nemanja Kaloper
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 9, Pp 1-19 (2017)
Journal of High Energy Physics
Journal of High Energy Physics, 2017(9):074. SPRINGER
Journal of high energy physics 1709(09), 074 (2017). doi:10.1007/JHEP09(2017)074
Journal of High Energy Physics
Journal of High Energy Physics, 2017(9):074. SPRINGER
Journal of high energy physics 1709(09), 074 (2017). doi:10.1007/JHEP09(2017)074
Journal of high energy physics 1709(09), 074 (2017). doi:10.1007/JHEP09(2017)074
Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative cor
Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c27472d59b18860fdad1e5ce7d6412f0
http://link.springer.com/article/10.1007/JHEP09(2017)074
http://link.springer.com/article/10.1007/JHEP09(2017)074
Publikováno v:
Physical Review
We apply the recently discovered classical-quantum correspondence (CQC) to study the quantum evaporation of breathers in an extended sine-Gordon model. We present numerical results for the decay rate of the breather as a function of the coupling stre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd82e15f6b3ff5ed3afe4fee20ef3d49
https://doi.org/10.1103/physrevd.100.045011
https://doi.org/10.1103/physrevd.100.045011