Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Philipp A. Höhn"'
Autor:
Sylvain Carrozza, Philipp A. Höhn
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-94 (2022)
Abstract We introduce a general framework realizing edge modes in (classical) gauge field theory as dynamical reference frames, an often suggested interpretation that we make entirely explicit. We focus on a bounded region M with a co-dimension one t
Externí odkaz:
https://doaj.org/article/81124a539f6045c1b732ef2ece2fd0d1
Publikováno v:
Quantum, Vol 7, p 1088 (2023)
Given the importance of quantum reference frames (QRFs) to both quantum and gravitational physics, it is pertinent to develop a systematic method for switching between the descriptions of physics relative to different choices of QRFs, which is valid
Externí odkaz:
https://doaj.org/article/4ae9b8bdc7bf481e8bc5f81569ec3129
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
We have previously shown that three approaches to relational quantum dynamics—relational Dirac observables, the Page-Wootters formalism and quantum deparametrizations—are equivalent. Here we show that this “trinity” of relational quantum dyna
Externí odkaz:
https://doaj.org/article/5159d8f852c04071920214ca07811793
Publikováno v:
Quantum, Vol 5, p 530 (2021)
In a quantum world, reference frames are ultimately quantum systems too – but what does it mean to "jump into the perspective of a quantum particle"? In this work, we show that quantum reference frame (QRF) transformations appear naturally as symme
Externí odkaz:
https://doaj.org/article/06b2dcd3807e4c829553cd3c8a7bf66b
Publikováno v:
Physics Letters B, Vol 769, Iss C, Pp 554-560 (2017)
Full general relativity is almost certainly ‘chaotic’. We argue that this entails a notion of non-integrability: a generic general relativistic model, at least when coupled to cosmologically interesting matter, likely possesses neither differenti
Externí odkaz:
https://doaj.org/article/a5b9239d88ab447b9fb15b9e014f0d70
Autor:
Philipp A. Höhn
Publikováno v:
Universe, Vol 5, Iss 5, p 116 (2019)
Despite its importance in general relativity, a quantum notion of general covariance has not yet been established in quantum gravity and cosmology, where, given the a priori absence of coordinates, it is necessary to replace classical frames with dyn
Externí odkaz:
https://doaj.org/article/fae9ed564ee447469cb7cfd3b05f6a66
Publikováno v:
Physical Review D. 104
The problem of time in quantum gravity calls for a relational solution. Using quantum reduction maps, we establish a previously unknown equivalence between three approaches to relational quantum dynamics: 1) relational observables in the clock-neutra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba865ba916e5e514316270f4e6a6feaa
https://doi.org/10.1103/physrevd.104.066001
https://doi.org/10.1103/physrevd.104.066001
Publikováno v:
Journal of Mathematical Physics. 63(11):112207
Employing internal quantum systems as reference frames is a crucial concept in quantum gravity, gauge theories and quantum foundations whenever external relata are unavailable. In this work, we give a comprehensive and self-contained treatment of suc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be670d1e0dc84ba7fd3af0d4b785f8dd
http://id.nii.ac.jp/1394/00002583/
http://id.nii.ac.jp/1394/00002583/
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
We have previously shown (arXiv:1912.00033) that three approaches to relational quantum dynamics -- relational Dirac observables, the Page-Wootters formalism and quantum deparametrizations -- are equivalent. Here we show that this `trinity' of relati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5919b71058b971b6c209e51b9865793e
https://doi.org/10.3389/fphy.2021.587083
https://doi.org/10.3389/fphy.2021.587083
Autor:
Shadi Ali Ahmad, Thomas D. Galley, Philipp A. Höhn, Maximilian P. E. Lock, Alexander R. H. Smith
Publikováno v:
Physical review letters. 128(17)
One of the most basic notions in physics is the partitioning of a system into subsystems, and the study of correlations among its parts. In this work, we explore these notions in the context of quantum reference frame (QRF) covariance, in which this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6453f89c4b543fb2d58e3ce1688f336
https://pubmed.ncbi.nlm.nih.gov/35570458
https://pubmed.ncbi.nlm.nih.gov/35570458