Zobrazeno 1 - 10
of 76
pro vyhledávání: '"quantum gravity: loop space"'
By virtue of the Noether theorems, the vast gauge redundancy of general relativity provides us with a rich algebra of boundary charges that generate physical symmetries. These charges are located at codimension-2 entangling surfaces called corners. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f851eb8d20f17582b78dd00ffefa19ed
http://arxiv.org/abs/2302.12799
http://arxiv.org/abs/2302.12799
Publikováno v:
Class.Quant.Grav.
Class.Quant.Grav., 2023, 40 (13), pp.135003. ⟨10.1088/1361-6382/accccd⟩
Class.Quant.Grav., 2023, 40 (13), pp.135003. ⟨10.1088/1361-6382/accccd⟩
Non-singular black holes models can be described by modified classical equations motivated by loop quantum gravity. We investigate what happens when the sine function typically used in the modification is replaced by an arbitrary bounded function, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6b4fc9c0737fc5c49c0a726fd202f4d
http://arxiv.org/abs/2212.06708
http://arxiv.org/abs/2212.06708
Publikováno v:
Phys.Rev.D
Phys.Rev.D, 2022, 105 (12), pp.126024. ⟨10.1103/PhysRevD.105.126024⟩
Phys.Rev.D, 2022, 105 (12), pp.126024. ⟨10.1103/PhysRevD.105.126024⟩
International audience; The study of toy models in loop quantum gravity, defined as truncations of the full theory, is relevant to both the development of the loop quantum gravity phenomenology, in cosmology and astrophysics, and the progress towards
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66abdd92ca0adb06947640ed8fc980dc
https://doi.org/10.1103/physrevd.105.126024
https://doi.org/10.1103/physrevd.105.126024
We consider a deformation of 3D lattice gauge theory in the canonical picture, first classically, based on the Heisenberg double of $\operatorname{SU}(2)$, then at the quantum level. We show that classical spinors can be used to define a fundamental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::294dd225cc3edfd02c511212b9444111
http://arxiv.org/abs/2205.13352
http://arxiv.org/abs/2205.13352
Autor:
Chen, Qian
In loop quantum gravity, partitioning graph introduces boundaries and entanglement between spin sub-networks, reflecting non-local degrees of freedom and correlation amongst spatial regions. This gives rise to the view of coarse-graining, reducing th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0312bc85b093ddbb6456a8b5421d5511
http://arxiv.org/abs/2205.11205
http://arxiv.org/abs/2205.11205
Publikováno v:
Physical Review D. 105
Most of the phenomenology of loop quantum gravity in the cosmological sector is based on the so-called holonomy correction to the Hamiltonian constraint. It straightforwardly modifies the Friedmann equations. In this work, we investigate the influenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe0b7759111b6ed1c2395cdbbbd02a39
https://doi.org/10.1103/physrevd.105.063521
https://doi.org/10.1103/physrevd.105.063521
Publikováno v:
Commun.Math.Phys.
Commun.Math.Phys., 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩
Communications in Mathematical Physics
Communications in Mathematical Physics, Springer Verlag, 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩
Commun.Math.Phys., 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩
Communications in Mathematical Physics
Communications in Mathematical Physics, Springer Verlag, 2022, 389 (1), pp.399-437. ⟨10.1007/s00220-021-04154-3⟩
We study the semiclassical limit of a class of invariant tensors for infinite-dimensional unitary representations of $\mathrm{SL}(2,\mathbb{C})$ of the principal series, corresponding to generalized Clebsch-Gordan coefficients with $n\geq3$ legs. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09963552285ce111860ee9edbfd4a8bd
https://hal.science/hal-03070617
https://hal.science/hal-03070617
Autor:
Houri Ziaeepour
Publikováno v:
Symmetry, Vol 14, Iss 58, p 58 (2022)
Symmetry
Symmetry, 2022, 14, pp.58. ⟨10.3390/sym14010058⟩
Symmetry; Volume 14; Issue 1; Pages: 58
Symmetry
Symmetry, 2022, 14, pp.58. ⟨10.3390/sym14010058⟩
Symmetry; Volume 14; Issue 1; Pages: 58
In a previous work [arXiv:2009.03428] we proposed a new model for Quantum GRavity(QGR) and cosmology, dubbed $SU(\infty)$-QGR. One of the axioms of this model is that Hilbert spaces of the Universe and its subsystems represent $SU(\infty)$ symmetry g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::801892cbd32a38c037c8e96cf098db55
https://www.mdpi.com/2073-8994/14/1/58
https://www.mdpi.com/2073-8994/14/1/58
Publikováno v:
PoS
European Physical Society Conference on High Energy Physics 2021
European Physical Society Conference on High Energy Physics 2021, Jul 2021, Online, Germany. pp.066, ⟨10.22323/1.398.0066⟩
European Physical Society Conference on High Energy Physics 2021
European Physical Society Conference on High Energy Physics 2021, Jul 2021, Online, Germany. pp.066, ⟨10.22323/1.398.0066⟩
International audience; Black Holes of primordial origin (PBHs) can constitute a large fraction of dark matter (DM) in the Universe. If light enough, they can emit a sizeable amount of Hawking radiation, which may be detected by dark matter experimen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a8059bcb7e1b178477847f1d402bd7
http://cds.cern.ch/record/2827282
http://cds.cern.ch/record/2827282
We develop in a companion article the kinematics of three-dimensional loop quantum gravity in Euclidean signature and with a negative cosmological constant, focusing in particular on the spinorial representation which is well-known at zero cosmologic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7eb03c3277143e8e2428b699ee6054c
http://arxiv.org/abs/2111.14471
http://arxiv.org/abs/2111.14471