Results 11 to 20 of about 9,778,055 (369)

Dimension and Dimensional Reduction in Quantum Gravity

Universe, 2019
If gravity is asymptotically safe, operators will exhibit anomalous scaling at the ultraviolet fixed point in a way that makes the theory effectively two-dimensional.
Steven Carlip
doaj   +3 more sources

The dynamics of coset dimensional reduction [PDF]

Physical Review D, 2006
The evolution of multiple scalar fields in cosmology has been much studied, particularly when the potential is formed from a series of exponentials. For a certain subclass of such systems it is possible to get `assisted` behaviour, where the presence of ...
B. S. DeWit, J. Scherk, Josef L. P. Karthauser, P. Forgacs, P. M. Saffin   +4 more
core   +6 more sources

The Dimensional-Reduction Anomaly in Spherically Symmetric Spacetimes [PDF]

, 2000
In D-dimensional spacetimes which can be foliated by n-dimensional homogeneous subspaces, a quantum field can be decomposed in terms of modes on the subspaces, reducing the system to a collection of (D-n)-dimensional fields. This allows one to write bare
A. Mikovic, C.W. Misner, E. Elizalde, F.C. Lombardo, I.S. Gradshteyn, P. Candelas, P. Sutton, P.R. Anderson, R. Balbinot, R. Balbinot, R. Bousso, S. Nojiri, S. Nojiri, S. Nojiri, S.M. Christensen, S.M. Christensen, T. Chiba, T.S. Evans, V. Frolov, V. Mukhanov, W. Kummer, W. Kummer, W. Kummer, W. Kummer   +23 more
core   +6 more sources

Torsion in cohomology and dimensional reduction

Journal of High Energy Physics, 2023
Conventional wisdom dictates that ℤ N factors in the integral cohomology group H p (X n , ℤ) of a compact manifold X n cannot be computed via smooth p-forms.
Gonzalo F. Casas, Fernando Marchesano, Matteo Zatti   +2 more
doaj   +4 more sources

Self-completeness and spontaneous dimensional reduction [PDF]

The European Physical Journal Plus, 2013
A viable quantum theory of gravity is one of the biggest challenges facing physicists. We discuss the confluence of two highly expected features which might be instrumental in the quest of a finite and renormalizable quantum gravity -- spontaneous ...
A. Bonanno, A.E. Sikkema, D. Benedetti, D. Cangemi, D. Grumiller, D. Grumiller, E. Spallucci, E. Spallucci, E. Spallucci, G. Calcagni, G. Calcagni, G. Dvali, J. Ambjorn, J. Laiho, J. Mureika, J. Mureika, J.R. Mureika, L. Modesto, L. Modesto, L. Modesto, L. Modesto, L. Modesto, L. Modesto, M. Banados, O. Lauscher, P. Nicolini, P. Nicolini, P. Nicolini, P. Nicolini, P. Nicolini, R. Casadio, R. Jackiw, R. Mann, R.B. Mann, R.B. Mann, R.B. Mann, R.B. Mann, R.B. Mann, R.J. Adler, S. Carlip, S. Chatrchyan, S.M. Morsink, V. Khachatryan   +42 more
core   +4 more sources

Supersymmetry Breaking by Dimensional Reduction over Coset Spaces [PDF]

, 2000
We study the dimensional reduction of a ten-dimensional supersymmetric E_8 gauge theory over six-dimensional coset spaces. We find that the coset space dimensional reduction over a symmetric coset space leaves the four dimensional gauge theory without ...
Alvarez-Gaumé, Antoniadis, Antoniadis, Antoniadis, Bais, Barnes, Batakis, Chapline, Chapline, Delgado, Derendinger, Dienes, Dimopoulos, Fahri, Farakos, Farakos, Ferrara, Ferrara, Forgacs, Forgacs, Forgacs, Fujikawa, G. Zoupanos, Girandello, Green, Green, Harnad, Harnad, Harnad, Hill, Hill, Hill, Horava, Hosotani, Iliopoulos, Kapetanakis, Kapetanakis, Kapetanakis, Kapetanakis, Kapetanakis, Kephart, Kobayashi, Kozimirov, Kubo, Kubo, Kubyshin, Kubyshin, Luest, Luest, Luest, Manton, Marciano, Muller-Hoissen, Munoz, Nilles, P. Manousselis, Palla, Pilch, Pilch, Sakai, Taylor, Triantaphyllou, Triantaphyllou, Wess, Wetterich, Witten, Witten, Witten, Zoupanos, Zoupanos   +69 more
core   +6 more sources

Dimensional reduction of the generalized DBI

Nuclear Physics B, 2015
We study the generalized Dirac–Born–Infeld (DBI) action, which describes a q-brane ending on a p-brane with a (q+1)-form background. This action has the equivalent descriptions in commutative and non-commutative settings, which can be shown from the ...
Jun-Kai Ho, Chen-Te Ma
doaj   +3 more sources

Dynamics of dimensional reduction

Physics Letters B, 1980
In d-dimensional unified theories that, along with gravity, contain an antisymmetric tensor field of rank s-1, preferential compactification of d-s or of s space-like dimensions is found to occur. This is the case in 11-dimensional supergravity where s = 4.
P. Freund, M. Rubin
semanticscholar   +3 more sources

Dimensional reduction in quantum optics

Physical Review Research
One-dimensional quantum optical models usually rest on the intuition of large-scale separation or frozen dynamics associated with the different spatial dimensions, for example when studying quasi one-dimensional atomic dynamics, potentially resulting in ...
Jannik Ströhle, Richard Lopp
doaj   +4 more sources

Accuracy of a one-dimensional reduction of dynamical systems on networks. [PDF]

Physical Review E, 2021
Resilience is an ability of a system with which the system can adjust its activity to maintain its functionality when it is perturbed. To study resilience of dynamics on networks, Gao et al.
Prosenjit Kundu, H. Kori, N. Masuda
semanticscholar   +1 more source