Zobrazeno 1 - 10
of 138
pro vyhledávání: '"A. Thuerigen"'
A longstanding conjecture in $\phi^4_4$ theory is that primitive graphs dominate the beta function asymptotically at large loop order in the minimal-subtraction scheme. Here we investigate this issue by exploiting additional combinatorial structure c
Externí odkaz:
http://arxiv.org/abs/2412.08617
Autor:
Achour, Jibril Ben, Benedetti, Dario, Bojowald, Martin, Brandenberger, Robert, Butera, Salvatore, Ferrero, Renata, Giacomini, Flaminia, Giesel, Kristina, Goeller, Christophe, Haas, Tobias, Höhn, Philipp A., Kirklin, Joshua, Marchetti, Luca, Oriti, Daniele, Percacci, Roberto, Pereira, Antonio D., Pithis, Andreas G. A., Sakellariadou, Mairi, Steinhaus, Sebastian, Thürigen, Johannes
This collection of perspective pieces captures recent advancements and reflections from a dynamic research community dedicated to bridging quantum gravity, hydrodynamics, and emergent cosmology. It explores four key research areas: (a) the interplay
Externí odkaz:
http://arxiv.org/abs/2411.12628
Autor:
Juliano, Leonardo, Thürigen, Johannes
Generalizations of vector field theories to tensors allow to similarly apply large-$N$ techniques but find a richer though often still tractable structure. However, the potential of such tensor theories has not been fully exploited since only a symme
Externí odkaz:
http://arxiv.org/abs/2406.01368
Autor:
Hock, Alexander, Thürigen, Johannes
Matrix field theory is a combinatorially non-local field theory which has recently been found to be a non-trivial but solvable QFT example. To generalize such non-perturbative structures to other models, a more combinatorial understanding of Dyson-Sc
Externí odkaz:
http://arxiv.org/abs/2404.03389
Publikováno v:
J. Math. Phys. 65, 032302 (2024)
Field theories with combinatorial non-local interactions such as tensor invariants are interesting candidates for describing a phase transition from discrete quantum-gravitational to continuum geometry. In the so-called cyclic-melonic potential appro
Externí odkaz:
http://arxiv.org/abs/2305.06136
Publikováno v:
Phys. Rev. D 108, 066011, 14 September 2023
It has been shown in [1] that a class of restricted spin foam models can feature a reduced spectral dimension of space-time. However, it is still an open question how curvature affects the flow of the spectral dimension. To answer this question, we c
Externí odkaz:
http://arxiv.org/abs/2304.13058
Publikováno v:
Phys. Rev. Lett. 130 (2023) 141501
Controlling the continuum limit and extracting effective gravitational physics are shared challenges for quantum gravity approaches based on quantum discrete structures. The description of quantum gravity in terms of tensorial group field theory (TGF
Externí odkaz:
http://arxiv.org/abs/2211.12768
Publikováno v:
J. High Energ. Phys. 2023, 74 (2023)
In the tensorial group field theory (TGFT) approach to quantum gravity, the basic quanta of the theory correspond to discrete building blocks of geometry. It is expected that their collective dynamics gives rise to continuum spacetime at a coarse gra
Externí odkaz:
http://arxiv.org/abs/2209.04297
Publikováno v:
J. High Energ. Phys. 2021, 201 (2021)
In the tensorial group field theory approach to quantum gravity, the theory is based on discrete building blocks and continuum spacetime is expected to emerge from their collective dynamics, possibly at criticality, via a phase transition. On a compa
Externí odkaz:
http://arxiv.org/abs/2110.15336
Differential reformulations of field theories are often used for explicit computations. We derive a one-matrix differential formulation of two-matrix models, with the help of which it is possible to diagonalize the one- and two-matrix models using a
Externí odkaz:
http://arxiv.org/abs/2108.00540